MAXA I-290 Series Inverter Air Water Heat Pumps with Axial Fans User Manual

Chiller and Inverter Air/Water heat pumps with axial fans
Controller Manual
Models
i-290 0106
i-290 0109
i-290 0112
i-290 0115
i-290 0118

I-290 Series Inverter Air Water Heat Pumps with Axial Fans

This manual has been created for informative purpose. The company declines any responsibility for the results of any projecting or any installation based on the explanations and/or on the technical specifications provided in this manual. It is besides forbidden the reproduction under any form of the texts and of the figures contained in this manual. This manual is a translation from the official italian language version. For reasons of environmental respect the Company will not provide the hard copy in the original language which could be directly requested or downloaded from the Company website at any time. In case of any dispute, the original language manual will be the trusted one. Even partial reproduction PROHIBITED © Copyright – Advantix SpA

PUMPS WITH AXIAL FANS**

The electrical and electronic products and any waste should not be disposed of with normal household waste, but disposed of according to WEEE law in accordance with the directive 2012/19/EU, inquiring thereof at the place of residence or with the retailer in the case where the product is replaced with a similar one.

HOW TO KEEP THE MANUAL

The company reserves the right to modify its products and related manuals without necessarily updating previous versions of the reference material. We also decline any responsibility for possible inaccuracies in the manual if due to printing or transcription errors. The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this manual. The company is available to give any detailed information about this manual and to give information regarding the use and the maintenance of its own units.

1.1 GRAPHIC SYMBOLS USED IN THE MANUAL

| Indicates prohibited operations.
---|---
| Indicates potentially hazardous situation for people and/or the proper functioning of the unit.
| Hazardous electrical voltage – Electrocution hazard.
| Indicates important information that the operator has to follow in order to guarantee the correct operation of the unit in complete safety. Also indicates some general information.

PERMITTED USED

• The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.
• These units are built for the heating and/or cooling of water. Any other use not expressly authorised by the manufacturer is considered improper and therefore not allowed.
• All the work must be executed by skilled and qualified personnel, competent on the existing regulations in country of installation.
• This appliance is intended to be used by expert or trained operators in shops, light industry and in factories, or for commercial use by non-expert personnel.
• The appliance may be used by children at least 8 years old and by persons with reduced physical, sensory or mental capabilities or without experience or the necessary knowledge as long as they are supervised or after they themselves have received instructions on the safe use of the appliance and understand the relevant dangers. Children must not play with the appliance. The cleaning and maintenance which the user is expected to carry out on the unit cannot be done by children without supervision.

GENERAL SAFETY GUIDELINES

Before starting any type of operation on the unit, every user and operator must have perfect knowledge of operation of the machine and of its controls and have read and understood all of the information in this manual and in the user-installer manual.
3.1 PERSONAL PROTECTIVE EQUIPMENT
Refer to the user-installer manual which accompanies the unit.
3.2 WORKERS’ HEALTH AND SAFETY
Refer to the user-installer manual which accompanies the unit.

| IT IS PROHIBITED:
---|---
To remove and/or to tamper with any safety device.
For unauthorised personnel to access the electric panel.
To work on live systems.
To touch the systems if not authorised to do so.
To allow children or unassisted disabled persons to use the appliance.
To touch the appliance when barefoot or parts of the body are wet or damp.
To perform any cleaning operation when the master switch is ‘ON’.
To pull, detach or twist the appliance’s electric cables.
To step on, sit down on and/or place any type of object on the appliance.
To spray or pour water directly on the unit.
To dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags, etc.) as they may represent a hazard for the environment and one’s life.
To tamper with or replace parts of the unit without the specific consent of the manufacturer. The manufacturer shall have no responsibility whatsoever in case of unauthorised operations.

| CAUTION:
Refer to the user-installer manual which accompanies the unit before proceeding.
All the operation described below must be done by QUALIFIED PERSONNEL ONLY.
The electrical wiring to the terminal blocks has to be done only by qualified personnel.
Any routine and/or extraordinary maintenance operation must be carried out with the machine stopped and disconnected.
Do not place your hands or introduce screwdrivers, spanners or any other tools on moving parts.
The machine operator and maintenance personnel must receive suitable training for the performance of their tasks in safety.
Only authorised personnel are allowed to have access to the electric panel.
Operators must know how to use personal protective equipment and the accident-prevention rules of national and interna- tional laws and regulations.
The operator’s workplace has to be kept clean, tidy and clear of objects that may hinder free movement. Appropriate lighting of the work place shall be provided so as to allow the operator to carry out the required operations safely. Poor or excessive lighting can cause risks.
Ensure that work places are always adequately ventilated and that the extraction systems are working, in good condition and in compliance with the requirements of the laws in force.
Not all of the configurations described can be activated and/or modified at the same time.
Values other than the default values can jeopardise proper operation of the unit. For further information regarding the value to set, you can refer directly to ADVANTIX S.p.a.
The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.

| The power supply has to respect the limits shown on the unit’s technical label: failing this, the warranty shall expire immedi- ately. Before beginning any type of operation, make sure that power is disconnected.
---|---
Connect the conductors in order: phase, neutral and earth.
Dimensioning of the power cables must take into consideration the TECHNICAL DATA provided in the user-installer manual accompanying the unit. Also consider any auxiliary heating devices.
Effective earthing is mandatory; the manufacturer is not responsible for damage caused in its absence.
When undergoing maintenance, the unit must be disconnected from the power supply, and it must be unplugged in such a way that the operator can verify from wherever he accesses that the plug remains disconnected.
Use cables that meet the regulations in force in the different countries.
After the unit has been running for 10 minutes, make sure that the screws on the power terminal block remain secured.

| Install upstream of each unit a suitable QF protective device and power disconnector, with delayed characteristic curve, with at least 3 mm contact opening and adequate breaking capacity and residual current protection. The size of the circuit breaker must comply with absorption of the unit. See the TECHNICAL DATA in the user-installer manual which accompanies the unit. Also consider any auxiliary heating devices.
---|---
Before performing any operations on the electric panel, IT IS MANDATORY:
To switch off the unit from the control panel (“OFF” displayed).
To place the general residual current device QF at “OFF”.
To wait 15 seconds before accessing the electric panel.
To check the grounding before performing any operation.
To remain well isolated from the ground, with dry hands and feet, or using insulated platforms and gloves.
To keep foreign materials away from the system.

PURPOSE AND CONTENTS OF THE MANUAL

The manual is intended to provide the essential information to configure the controller of the units.
It is addressed to the installer and operators of the appliance and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge of it.
Not all of the functions described can be activated and/or selected at the same time. Contact our headquarters for further information.
The manual describes the machine at the moment it was sold. It must therefore be considered adequate with respect to the state-of-the-art in terms of potentiality, ergonomics, safety and functionality.
The company also performs technological upgrades and does not consider itself obliged to update the manuals of previous machine versions which could even be incompatible. Therefore make sure to use the supplied manual for the installed . Contact our headquarters in case of updates or doubts.
The user is recommended to follow the instructions contained in this booklet, especially those concerning safety and routine maintenance.

Function that works at the thermostat level, switches LEDs and backlight off/on. When the keypad is in OFF mode, does not accept commands.
This function has no effect on machine control, but enables/disables thermostat interaction. Allows you to exit the menu.
If pressed for 3 seconds, activates standby mode and locks the keyboard (lock icon appears).
This functionality has no effect on the machine control, but enables/disables user interaction with the thermostat keyboard.
| UP
It allows you to move to a higher menu or to increase the value of a parameter.
KEY| DESCRIPTION
---|---
| DOWN
It allows you to move to a lower menu or to decrease the value of a parameter.
| CHRONOTHERMOSTAT
Allows to set the operating bands for thermostation on the room temperature detected by the probe present in the i-CR.
| CHANGE SEASON KEY
To change the season press for 3 seconds or switch the heat pump or chiller OFF.
| ENTER KEY
It allows you to enter menu or to confirm a parameter.

LED backlighting is switched off if the keyboard has not been used for more than 1 minute. In this case, the first press on a key reactivates the keyboard by making the LEDs light up, but the function associated with the key is not executed.

I-CR INSTALLATION

The control is designed for wall mounting according to DIN 503. Indoor use.
On the back of the control, there are pre-drilled slots to be removed by applying pressure with a screwdriver, so that the holes for fastening can be drilled.
Before doing so, open the control itself, applying light pressure to the bottom and top of the control, so as to separate the back panel from the front panel.
Use the back panel and drill the holes in the two slots.
Do not use the panel directly as a template to drill holes in the wall, the electronics could be damaged during this operation.
In detail follow the following steps to open the i-CR:

 I-CR CONNECTIONS

Two connection cables are required between chiller unit or heat pump and i-CR remote control:

• 3X1.5mmq shielded twisted pair cable for Modbus R+/R-/GND communication.
• 2×1.5mmq cable for 12Vac power supply.

| DESCRIPTIONS| i-CR TERMINALS| CHILLER OR HEAT PUMP TERMINALS| NOTE
---|---|---|---|---
CABLE 1| POWER SUPPLY| PIN 12| 12Vac|
PIN 13| 12Vac

CABLE 2

|

COMMUNICATION

| PIN 9| GND RS485|

SHIELDED AND TWISTED CABLE

PIN 7| RS485 +
PIN 8| RS485 –
| DESCRIPTIONS| i-CR TERMINALS| CHILLER OR HEAT PUMP TERMINALS| NOTE
---|---|---|---|---
CABLE 3| DIGITAL INPUT| PIN 1| | VOLTAGE-FREE CONTACT
PIN2

7.1 MENU
Press Enter to enter the first-level menu. The following items appear here: With the arrow keys you navigate through the possible entries, with the Enter key you select the chosen menu, with the ON/OFF KEY you exit again.

Version, Revision and Sub
Alarm history| Hist| Installer| Only if data are present in the history
Menu with manual forcing| For| Installer| —
System Status Menu| SYS| Installer| —

The PSS menu is accessed to enter the service password and to enable access with a higher user permission. Once you exit the menu completely, you lose the password privilege and must enter it again.
7.1.1 Set
Setting WATER setpoint cooling and heating.

7.1.2 SetA
Setting of AMBIENT setpoints (i-CR on-board probe measurements). Disabled in diS mode.

7.1.3 ModE
Selecting the ModE menu sets the type of operation (default operation mode is ‘diS’).

| diS: Ambient thermostat function disabled.
This mode can be recognised by the fact that neither the manual icon nor the chronothermostat icon appears.
The icon with the drop symbol is present. The temperature displayed is that of the control probe of the heat pump or chiller. The
symbol is only displayed when the machine is ON. In this mode, air sets are not be settable (menu SetA does not appear).
---|---
| ComF: Ambient thermostat function active.
The thermoregulation request will be evaluated based on the temperature read by the thermostat and the normal seasonal room set.
The temperature displayed is the air temperature read by the probe on board the i-CR thermostat.
This mode can be recognised by only the presence of the manual symbol.
| Eco: ECO function manual.
The thermoregulation request will be evalueted based on the temperature read by the thermost and the ECO seasonal room set.
This mode can be recognised by the presence of the manual and leaf icon.
| Cron: Active chronothermostat.
The thermoregulation request follows the programming of the weekly chronothermostat which in turn can be in one of the  following bands: OFF Eco ComF
This mode can be recognised by the presence of the clock indicating the active chronothermostat, the active time zone can be identified by the presence or absence of the moon and leaf symbols.
This menu is always accessible. To set the chronothermostat see chapter 8.14.

7.1.4 Err
In this menu you can see the abbreviations of the current alarms active on the chiller or heat pump.
Use the UP and DOWN buttons to scroll through the various alarms present.
If there are no alarms, the message ‘noAL’ appears.
The presence of an error on the chiller or heat pump can be recognised by the presence of the icon. Manual reset of machine alarms: This is done automatically by switching the machine to OFF with the MODE button (if there is an alarm signal on the screen).
7.1.5 Date
Setting date and hour:

• YEAr: from 2018 to 2099
•  Mon: from 1 (January) to 12 (December)
• DAy: from 1 to 31 (with dynamic limitation for some months/years)
• Hour: from 00:00 to 23:59

The day of the week is calculated automatically.
Daylight saving time handled automatically with EU rule.
On the display, by default, day 1 is Monday and day 7 is Sunday. By setting parameter K50 = 1, day 1 will be Sunday.
Note: When at start-up the board detects that the date and time have been reset, this menu is automatically presented to ask for the date and time to be entered.
7.1.6 PSS
Setting password to enter in the installer menu.
7.1.7 Par
This menu gives access to all machine parameters. The parameters are collected in groups, each group is identified by a three-digit code, while the index of each parameter is preceded by a letter.

DESCRIPTION| GROUP IDENTIFICATION CODE| PARAMETER INDEX| VISIBILITY
---|---|---|---
Configuration i-CR| KBT| K01-| User/Installer
Configuration| CnF| H01-| Installer
Compressor| CP| C01-| Installer
Alarms| ALL| A01-| Installer
Regulation| rE| b01-| Installer
Pump| PUP| P01-| Installer
Heating elements| Fro| r01-| Installer
Defrosting| dFr| d01-| Installer
Hz min / max| LbH| L0-| Installer
*Solar*| SUn| S01-| Installer
Mixer valve**| rAD| i01-| Installer

(*) To be configured if Gi module present.
To access the installer parameters: PRG -> PSS -> PRG -> (insert installer password) ->PRG ->PAr -> PRG.
In the KBT “display configuration” group are the configurations for remote control i-CR:

Code| Description| Default value| Minimum limit| Maximum limit| Unit| PSW
---|---|---|---|---|---|---

K01

| Baudrate serial Modbus
0 = 4800 baud
1 = 9600 baud
2 = 19200 baud
3 = 38400 baud|

1

|

0

|

3

|

Num.

|

U

K02

| Modbus serial parity
0 = No parity with 2 stop bits 1 = ODD parity with 1 stop bit 2 = EVEN parity with 1 stop bit
3 = No parity with 1 stop bit|

2

|

0

|

3

|

Num.

|

U

K03| Modbus communication timeout| 60| 0| 120| s| U
K30| Backlight power| 100%| 10| 100| %| I

K31

| Automatic menu exit timeout 0: No timeout managed
N > 0: After N seconds without pressing any buttons you return to the main page|

0

|

0

|

120

|

s

|

U

K32| Timeout for switching to standby 0 = Standby not managed| 60| 0| 120| s| U

K33

| Standby brightness K33 = 0: off
K33 > 0: Percentage brightness compa-
red to normal operation|

100%

|

0

|

100

|

%

|

U

K50

| Weekday offset
0 = Monday is day 1
1 = Sunday is day 1|

0

|

0

|

1

|

Num.

|

I

K100| Temperature probe calibration| 0| -10.0| 10.0| °C| I

7.1.8 OPERATING [oHr]
This displays the operating hours of the compressor (oH1) and of the circulator (oHP1), and the number of compressor starts (cC1).
Pressing ESC for 3 seconds resets the currently displayed count.
Please note that the menu is password-protected.
7.1.9 USB MENU [USB]
Only visible with pen drive with related files (formatted in FAT32).
The following are the functions available by using the USB pen drive connected the board.
Please note that the menu is password-protected.

CAUTION
All the operations with INSTALLER visibility must be carried out by QUALIFIED PERSONNEL.
The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.

7.1.9.1 FIRMWARE UPDATE [UPdF]
In case of firmware update, it is possible to make the upgrade by means of a USB pen drive, using the USB port in the controller.
For the upgrade:

1. Copy the upgrade files in the root directory of a USB pen-drive;
2. Set the unit in Standby and shut it down by placing the master switch at OFF;
3. Insert the pen-drive into the USB port of the controller;
4. Power on the unit, placing the master switch at ON;
5. Access the parameters PRG -> PSS -> PRG -> (enter Service password) -> PRG -> USB -> UPdF -> PRG. Selecting this item starts the automatic firmware upgrade procedure. The display shows a count indicating the transferred Kbytes. When the counts ends the firmware is correctly loaded;
6. When the installation is complete, the board returns to normal operation and the machine is ready to be activated;
7. Switch off the unit, placing the master switch at OFF;
8. Wait 5 minutes for complete discharge of the compressors;
9. Remove the pen drive from the USB port;
10. Power on the unit, placing the master switch at ON.

7.1.9.2 PARAMETERS UPDATE [UPPA]
In case of parameters update, it is possible to make the upgrade by means of a USB pen drive, using the USB port in the controller.
For the upgrade:

1. Copy the upgrade parameter files in the root directory of a USB pen-drive;
2. Set the unit in Standby and shut it down by placing the master switch at OFF;
3. Insert the pen-drive into the USB port of the controller;
4. Power on the unit, placing the master switch at ON;
5. Access the parameters PRG -> PSS -> PRG -> (enter service password) -> PRG -> USB -> UPPA -> PRG. Selecting this item starts the automatic parameters upgrade procedure. The display shows a count indicating the transferred Kbytes;
6. When the count is over, switch off the unit, placing the master switch at OFF;
7. Remove the pen drive from the USB port;
8.  Power on the unit, placing the master switch at ON.

7.1.10 MENU VERSIONE FIRMWARE [Fir]
Firmware Version (uEr), Firmware revision (rEu) and sub (SUb) can be dispalyed.
Please note that the menu is password-protected.

7.1.11 HIST
This menu is used to display the alarm history saved in the machine. The alarms are displayed in reverse chronological order, the most most recent alarm is displayed first. Use the Up and Down buttons to scroll through the various records present. In the transitions where the thermostat reads the new alarm, dashes briefly appear dashes appear briefly, indicating that the value is not yet available.The acronym of the saved alarm (Exxx) is displayed by default. Repeatedly pressing the Enter key scrolls the other date in the record which are:

• Alarm time in hh:mm format (24 hours)
• Day of month ‘d0xx’ (where xx = 1 – 31)
• Month ‘M0xx’ (where xx = 1 – 12)
• Year “y0xx” (where xx = 0 – 99)

In the event that the board at the time of the alarm did not have a valid date and time available, the conventional time shown is in days and hours since the last power-on of the board. In this case, the month and year fields do not appear and the day field can also be 0.
Note:
In the alarm history also ends the event of successful disinfection, in this case ‘ALOK’ appears instead of the alarm acronym.

7.1.12 For
This menu, which is accessible with at least the installer password, allows certain forcings to be activated on the machine:

• dEFr: Used to activate a manual defrost cycle. Pressing the Enter key sends the command to the machine and exits the menu.
• PumP: This is used to manually activate the system pump to carry out a system bleed. Pressing the Enter key sends the command to the machine and exits the menu. Note that the command is only accepted by the machine if it is set to OFF.
• ALEG: It is possible to force an anti-legionella disinfection cycle in manual mode (see For menu). Once the forcing has been sent to the machine via the menu, it is kept active for 60 minutes. In the event of a power failure during these 60 minutes, the request is lost. To be able to perform the anti-legionella function, the following resources must be enabled on the heat pump: The DHW must be enabled: H10 > 0. The DHW integration resistors must be enabled: r15 > 0 and there must be a digital output configured for this purpose (value 26). The DHW temperature probe must be configured and present (value 6).
• CIrC: This item is used to manually activate the system pump for recirculation with the pump at 100% for 1 hour. Pressing Enter sends the command to the machine and exits the menu. Pressing Enter again on the item with an active function the forcing is terminated. Note that the command is only accepted by the machine if it is set to OFF. The machine exits this mode if you leave the OFF condition, even if the entire forcing time has not yet elapsed.
• SoIP: This item is used to manually activate the solar pump. Pressing the Enter key sends the command to the machine and exits the menu. By pressing Enter again on the entry with active function, the forcing is terminated. Note that the command is only accepted by the machine only if it is set to OFF. The machine exits this mode if you leave the OFF condition.

7.1.13 SYS
System status menu, in this menu you can see some system parameters:
With the UP and DOWN KEYS you select which status to see.
Pressing the ENTER KEY toggles between the name of the status and its value.

Note: Show ‘—-‘ if value not available.
7.2 DISPLAY
In standard operation, the display shows the water outlet temperature in tenths of Celsius degrees or the alarm code if at least one is active. If several alarms are triggered, the first one is displayed while the second one will be displayed as soon as the first one is reset. In menu mode, the display depends on the current position. Below is a list of the main icons with their meanings:

of room temperature.
| Manual| When the chronothermostat is not active but the “mode” setting is.
| Maximum Hz| ON when maximum Hz function is active.
| Chronothermostat| Visible when the ambient chronothermostat is operative.
ICON| DESCRIPTION| NOTE
---|---|---
| Economy| Eco mode active (from manual or chrono-programme band).
| Off mode| Off mode (from manual or chrono-programme band).
| Password active| Indicates that you have access to menus under a password. The dots next to it indicate the password level entered.
| Padlock| Indicates active keypad lock.
| Alarm| Indicates that an alarm is present.
| Error link| Indicates lack of communication with the unit.
| Pump| On fixed when the pump of the unit is active.
| Compressor| Flashing: Unit on call.
Steadily lit: at least 1 compressor running.
| Antilegionella| On fixed: Disinfection cycle. Flashing: last cicle not executed.
| Antifreeze| On fixed when antifreeze resistences are activated, if present.
| Solar| On fixed when solar pump is activated, if present.
| Resistors| Fixed on when system integration or DHW heating elements are active, if present.
| Boiler| On fixed when boiler enable is active, if present.
| Defrost| On fixed when defrosting in progress.

7.3 KEYPAD LOCK

• AUTOMATIC: An automatic (standby) keypad lock is managed: after K32 (default 60 seconds) seconds of inactivity, the keypad LEDs are switched off and the LCD brightness is reduced as defined by K33 (default 100%), then, when one of the keys is the LEDs are activated to indicate the activation of the keyboard. There is no other effect on this event from the key pressed. With the leds active, the keyboard responds as required. For settings see par. 8.5.2.
• MANUAL: In addition to the automatic keypad lock as described in the machine interface section, there is the possibility of implementing a manual keyboard lock: Pressing the ON/OFF button for 3 seconds locks the keyboard. This is indicated by the padlock. At Each time a key is pressed in this lock situation, the padlock flashes together with the word “Lock”. To unlock the keypad press the ON/OFF key again for 3 seconds. pressed for the first time,

7.4 TERMINAL BLOCK
See relevant chapter in the i-290 User-Installer Manual.

Input for 1-Ph/N/PE power supply, 230 V, 50 Hz.

(only for sizes 0106/0109/0112)

N| Connect the neutral cable from mains
L| Connect phase L1 cable from mains
L2| Connect phase L2 cable from mains|

Input for 3-Ph/N/PE power supply, 400 Vac, 50 Hz. (only for sizes 0115 / 0118)

L3| Connect phase L3 cable from mains
1A| Signal connection channel 1 Modbus RTU + remote keyboard|

Modbus communication for remote keyboard i-CR For signal use shielded twisted pair cable 3 x 0.75 mm2 (1A = pin 7, 1B = pin 8, 1C = pin9) For power supply use 2 x 1 mm2 cable (connect to pins 12 and 13)

1B| Signal connection channel 1 Modbus RTU – remote keyboard
1C| Signal connection channel 1 Modbus GND remote keyboard
12 Vac| Remote keyboard power supply (12 Vac, 50 Hz, 500 mA)
12 Vac| Remote keyboard power supply (12 Vac, 50 Hz, 500 mA)
2A| Signal connection channel 2 Modbus RTU +, GI3 module or remote supervision| Connection of GI3 module, if fitted as an accessory.
Alternatively connection of Modbus RTU RS 485 communication for remote supervision, if CM accessory present. The GI3 module and CM supervision cannot be connected at the same time.
2B| Signal connection channel 2 Modbus RTU -, GI3 module or remote supervision
2C| Signal connection channel 2 Modbus GND, GI3 module or remote supervision
ID2| Remote summer/winter mode change input (to activate the function see relevant section in the MCO manual)| Voltage-free digital input
ID3| Remote on/off input (closed = machine on / open = machine off)| Voltage- free digital input

A16

| DHW probe (to activate the function see the relevant section in the MCO man- ual)| Analogue input
A17| System remote probe (to activate the function see relevant section in the MCO manual)| Analogue input

A18

| Double set point (to activate the function see the relevant section in the MCO man- ual)| Digital input
DO3 ()| System integration resistance| Single-phase voltage output 230 Vac, 50 Hz, maximum current 300 mA (AC1)
DO6 ()| Valve outlet sanitary hot water| Single-phase voltage output 230 Vac, 50 Hz, maximum current 300 mA (AC1)
DO7 (*)| Valve outlet second set point| Single-phase voltage output 230 Vac, 50 Hz, maximum current 300 mA (AC1)

(*) if used, it is recommended to drive a relay coil or contactor with the voltage output to manage the resource.

 EDITING DYNAMIC SET-POINT

The regulator allows you to modify the set-point by adding up the value according to the temperature of the outdoor air probe. To use this function, edit the values from parameter b08 to b14 following the information below (edited by the installer). Parameters of regulator PAr -> rE

• b08 enable = 1/disable=0 dynamic set-point.
• b09 = maximum cooling offset.
• b10 = maximum heating offset.
• b11 = Cooling outdoor temperature setting.
• b12 = Heating outdoor temperature setting.
• b13 = Cooling temperature delta.
• b14 = Heating temperature delta.

Edit the setpoint depending on the outdoor temperature:

8.1 SETTINGS FOR STANDARD CLIMATIC CURVES

CURVE| Setpoint Heat| Setpoint Cool| b08| B09| b10| B11| b12| B13| b14
---|---|---|---|---|---|---|---|---|---
A| 20°C| —| 1| —| 13°C| —| 20°C| —| -25°C
B| 20°C| —| 1| —| 18°C| —| 20°C| —| -27°C
C| 20°C| —| 1| —| 25°C| —| 20°C| —| -29°C
D| 40°C| —| 1| —| 10°C| —| 20°C| —| -28°C
E| 40°C| —| 1| —| 15°C| —| 20°C| —| -25°C
F| —| 5°C| 1| 5°C| —| 37°C| | -17°C| —
G| —| 10°C| 1| 8°C| —| 40°C| | -20°C| —

CIRCULATOR

The circulator of the heat pump can be set in the following operating modes:

• operation on call by temperature controller
• operating on call by temperature controller with periodic activation;
• continuous operation (default); The circulator is switched off immediately if:
• There is a manual reset pump block alarm, including the flow switch alarm;
• With remote input in standby or off, the pump (if running) is always switched off with a delay equal to P02 in tenths of a minute (default P02=2) T

The circulator can be configured with P03 to operate independently from the compressor or on call. 0=continuous operation in heating/cooling mode(default P03=0) 1=operating on call by temperature controller Note: with active no-flow alarm in automatic reset, the circulator is on even if the compressor is off. The circulator is always on when the antifreeze heaters are running and if operation of the hydraulic pump in antifreeze is enabled. Antifreeze operation is enabled if the regulation temperature drops below P04 °C (default 5°C), and disables if the regulation temperature rises above P04+P05 °C (Default value P05=2,0°C). Note: It is possible to change the maximum and minimum speed of the circulator by adjusting parameters P07 and P08 respectively.

9.1 CONTINUOUS OPERATION [P03=0] – Default
The circulator is only off with the unit OFF, in all other cases it is always on.
9.2 OPERATION ON CALL FROM TEMPERATURE CONTROLLER [P03=1]
In this operating mode, the circulator is active on demand by the temperature controller, after a delay time of P01 seconds (default P01=30) from when the pump switched on, the compressor switches on as well.
Whereas when switching off, the pump is deactivated after a delay time of P02 minutes (default P02=2) from when the compressor switches off.
With automatic reset flow switch alarm triggered, the circulator is on even if the compressor is off.

9.3 OPERATING ON CALL FROM TEMPERATURE CONTROLLER WITH PERIODIC ACTIVATION
The function is disabled if P17=0 (default).
If P03=1, the circulator turns on periodically for a time defined by the parameter P17 (in seconds) after a count, lasting a time set by parameter P16 (in minutes), activated when the pump switches off because temperature control fulfilled.
With automatic reset flow switch alarm triggered, the pump is on even if the compressor is off.
The periodical function is a suspended if the antifreeze protection trips.
9.4 PROPORTIONAL REGULATION OF THE CIRCULATOR
The speed of the circulator changes depending on the temperature difference between the inlet water and outlet water of the heat exchanger, according to the diagram below, where:

• P07: Maximum speed = 100%
• P08: Minimum speed = 75%
• P09: modulating pump inlet/outlet water Delta T setting (°C) (according to model)
• P10: Modulating pump Delta = 3°C (default)

The circulator is at maximum speed in DHW production.
Note: If the parameter r33 > 0, then the circulator can be running on call even to activate the system and/or sanitary heater, see par.10.8.
9.5 SYSTEM VENTING
Function used to vent the system, with the circulator at maximum speed.
To enable the function:

• Controller OFF
• Access the parameters PRG ->PSS ->PRG -> (enter Service password)
• Press the UP and DOWN keys simultaneously for 3 seconds

The circulator switches on at maximum speed, and then switches off after 5 minutes.
The system venting cycle can be exited manually by pressing the MODE/ESC key, or by pressing the UP and DOWN keys simultaneously for 3 seconds.
During this function, the flow switch alarm is disabled, the maintenance technician must guarantee that there is water inside the system.

COMPRESSOR OR ACTIVATION LOGIC

The restart of compressors is in operation of a set point refered to the inlet water temperature. It is based on calculation of ∆T,set which is the difference between outlet water temperatures and inlet water temperatures, detected while the compressor for thermoregulation is turning off.
10.1 REGULATION IN COOLING MODE

• Tw,out,set = adjusted setpoint in cooling;
• Tw, in, set = value of the water inlet probe recorded at the instant the compressor switches off when setpoint is reached;
• ∆T,set = Tw,out,set – Tw,in,set;
• b05 = compressor delta cut-off set= 0°C (default);
• b24 = cut-on hysteresis limitation;
• b25 = delta cut-on compressor set= 3°C.

• The compressor shutdown is set by the parameter b05: the compressor shutdown when Tw,out < Tw,out,set – b05
• The compressor restart starts when Tw,out > (Tw,out,set + ∆T,set + b25)

EXCEPTION: The value of ∆T,set is limited by b24.
If ∆T,set >b24 (default value 7°), the compressors restart when: Tw,out > (Tw,out,set + b24 + b25).
10.2 REGULATION IN HEAT MODE

• Tw,out,set = setting setpoint in heat mode
• Tw, in, set = value of the water inlet probe recorded at the instant the compressor switches off when setpoint is reached.
• ∆T,set = Tw,out,set – Tw,in,set
•  b24 = cut-on hysteresis limitation;
• b05 = compressor regulation delta cut-off = 0°C (default)
• b25 = compressor regulation delta cut-on = 3°C

• The compressor shutdown is regulated by parameter b05: the compressor shutdown when is regulated by parameter b05 Tw,out > Tw,out,set + b05
• The compressor restart when: Tw,out < (Tw,out,set – ∆Tset – b25)
  EXCEPTION: The value of ∆T,set is limited by b24.
  If ∆T,set >b24 (default value 7°), the compressors restart when: Tw,out < (Tw,out,set – b24 – b25).

 FAN CONTROL OF THE FINNED EXCHANGER

Ventilation control is a function of condensing pressure in chiller mode, and a function of evaporating pressure in heat pump mode.
The regulation of ventilation is dependent on the operating conditions of the machine.
A pre-ventilation occurs every time the compressor switches on and off.

CONTROLLER FUNCTIONS

The following is a list of the functions which can be activated in the machine controller; not all of them can be selected simultaneously.
Values other than the default values can jeopardise proper operation of the unit. If in doubt on which value to set, contact our headquarters.
12.1 ANTIFREEZE PROTECTION HEATERS (IF KA ACCESSORY IS AVAILABLE)
If the optional KA kit is present, the function is active by default.
The water antifreeze heaters on the faces of the evaporator plates even activate with the machine off (but powered) when the delivery water temperature drops below r02 °C (default 4°C) in “heating” mode or below r03 °C (default 4°C) in “cooling” mode or when  witched “OFF”. The heaters are switched off when the temperature measured by the outlet water probe exceeds r02+r06 in “heating” or r03+r06 in “cooling” or when “OFF” (default value r06=2.0 °C).
The heating cable at the base of the machine activates when the outdoor air temperature drops below 3°C. It deactivates when the outdoor temperature rises above 5°C.
12.2 ENABLING DOMESTIC HOT WATER PRODUCTION
To activate the domestic hot water functions, connect a probe to be placed inside the tank to terminals X17.1-X17.2 (enabled as analogue input).
The sanitary function must be enabled after positioning and connecting the temperature probe.

H10

| 0 (default)| Function disabled
1| Function active in heating and cooling mode.

The remote on-off function does not disable DHW production.

2| Function active in heating and cooling mode.

The remote on-off function disables DHW production.

3| Function active in heating mode.

The remote on-off function does not disable DHW production.

4| Function active in heating mode.

The remote on-off function disables DHW production.

5| Function active in cooling mode.

The remote on-off function does not disable DHW production.

6| Function active in cooling mode.

The remote on-off function disables DHW production.

ST6 can be activated via H17| 6| DHW temperature probe enabling
DO6 can be activated via H84| 6| DHW valve control

If the domestic hot water temperature is lower than its setting (set by default at 48°C, edited by accessing the menu PRG->Set->SAN) the machine activates the DHW valve and the compressor is set at maximum frequency, starting modulation one degree before the setting and switching off one degree after. When the set point is reached, the valve goes back to the rest condition and the compressor starts to regulate normally. Switching from utility water to domestic hot water, the working probe changes from “water outlet probe” to “DHW tank probe”. Switching from winter mode to sanitary mode, the compressor does not switch off and is brought to the maximum frequency established by the controller, whereas switching from summer mode to domestic hot water, the compressor is switched off and waits a safety time. Defrosting is always carried out in winter mode on the utility side, and never on the domestic hot water tank.
NOTE: -If H10 = 1/3/5. Switching off the unit by remote control (remote on-off, see paragraph 10.4.1) does not affect domestic hot water operation. The unit goes to priority sanitary mode just powered on. The display on the machine shows the temperature detected by the probe inside the DHW tank. When the sanitary cycle has finished, the display goes back to showing the water outlet probe temperature. If the remote ON-OFF digital input (terminals 15.1 / 15.2) is open, with sanitary function enabled (H10=1 and H20=6), the wording “SAN” will appear on the machine display. When the sanitary cycle has finished, the display goes back to showing “E00” indicating that the remote ON-OFF contact is open. -If H10 = 2/4/6, the remote on-off function disables domestic hot water production and operation of the heat pump in heatin and cooling mode, system side.

12.2.1 MEMORISING THE PROBE IN HEATING MODE
Switching from utility water to domestic hot water, the working probe changes from “water outlet probe” to “DHW tank probe”. For this reason, in heating mode, before entering sanitary mode, the last value read by the heat pump delivery probe is stored.
When sanitary temperature control is fulfilled, the system side temperature of reference goes back to that previously stored. The memory function interrupts:

• when the temperature read by the probe becomes lower than the stored value;
•  or when a time equal to b06 seconds (default b06 = 45) has elasped.

12.2.2 HEATING MODE ON DHW STORAGE TANK
If the parameter H130=1, the machine exploits the DHW storage tank even for central heating. In these conditions, the outlet of the DHW valve is also enabled during operation in heating mode and not only in sanitary mode. The valve is deactivated during defrosting and in cooling mode. When H130=1, the DHW integration heater can be enabled also to act as system integration heater: to do this, set r10=1 e r15=2 (for other r15 settings see Paragraph 10.6.3); furthermore no digital output must be set as system integration heater.
12.2.3 INSUFFICIENT HEAT EXCHANGE IN A DHW SYSTEM
During DHW production, if the heat pump flow probe detects a temperature higher than 60°C, the DHW valve output is de-energised (D06), and the value of the DHW probe at this time is recorded (Tsan,set).
-if the operation is San or Cool+San the compressor is stopped.
-If the operation is Heat+San, the system evaluates for b06 seconds whether there is a demand for heating from the system. If the system requires it, the compressor continues to work on the system, otherwise it is switched off.
-If the DHW resistor is present (e.g. DO3, H81=26), r15 = 0 or 1 and r24=2 or 3 it is activated until the DHW setpoint detected by the DHW probe is met (and any offset).
The compressor restarts when the flow temperature of the heat pump falls below 60°C again and the temperature measured by the DHW probe is lower than Tsan,set – 4°C.

If the unit is switched off by remote control during defrosting, the heat pump finishes defrosting and then places itself in off mode via remote control.
12.3.2 SUMMER/WINTER MODE CHANGE
The function can be set on digital input ID 2 (terminals X16.1/X16.2).
Heating or cooling mode of the heat pump can be managed by remote control.

Closed contact -> heat pump in heating mode.

The poles of the digital input can be swapped by setting H75 = 2.
12.4 SYSTEM WATER REMOTE PROBE
In some system solutions (e.g. heat pump in parallel to boiler on same hydronic circuit and shut off diverter valve) it could be necessary to enable a system remote temperature probe so that the controller can correctly process the management.

In the presence of the system remote probe, if the storage tank temperature is satisfied, it is avoided to activate the compressors even if the regulation probe requires it.
The conditions for the application of thermoregulation lockout are as follows:
– the heat pump is not performing DHW
– the heat pump is not defrosting
– all compressors are switched-off
The blocking conditions are as follows:

Operating mode| Conditions inhibiting the restart of thermoregulation
---|---
| heating| System remote probe > setpoint – b22
| cooling| System remote probe < setpoint + b22

Nota: b22=5°C. See paragraph 13.
12.5 FUNCTIONS DIGITAL OUTPUTS CAN BE ACTIVATED
If the machine block signal function is not active, one of the following signals can be configured at the DO7/N terminals and the user terminal block.

12.5.1 MACHINE BLOCK
Configured by default, a voltage output signalling the presence of an alarm.

12.5.2 AUXILIARY RESISTANCES
In some system solutions, it may be necessary to use an integration resistor for the system and/ or for the DHW. To define the mode of intervention of the integration resistors, the parameter r24 must be set:

• r24=0 integration resistors not used;
• r24=1 use of system integration resistor only;
• r24=2 use of DHW integration resistor only;
• r24=3 use of both system integration resistor and domestic hot water integration resistor.

12.5.2.1 SYSTEM HEATER
If the regulation temperature remains below water setpoint in heating (Hea) – 0.5°C for a time equal to r12 the integration heater is activated according to operation of the machine in joint time slots or in substitution, as indicated in Paragraph 10.11.
The heater switches off when the setpoint is reached (also taking into account an offset set with parameters r29 or r30).
If the regulation temperature remains below the water setpoint minus r11 (°C) and the machine is blocked due to triggering of an alarm, the heater switches on. It switches off when the machine exits the alarm block.

12.5.2.2 PLANT HEATER IN DEFROST
During the defrost cycle (see Paragraph 10.12.2), setting r21=1 (in addition to r10=1 and r24=1 or 3) activates the plant side electric heater, if requested (regulation temperature lower than water setpoint -r11(°C), without waiting the time defined by r12.
12.5.2.3 DHW HEATER
Function which can be activated instead of managing the plant heater
This is an additional resource for heating the domestic hot water storage tank if the compressor alone is not capable of fulfilling the request in a reasonable time. If domestic hot water production lasts longer than r16 (minutes) or if the machine blocks due to triggering of an alarm, the heater switches on. It switches off when the unit finishes domestic hot water production (also taking into account an offset on the setpoint with parameter r31, as explained in Paragraph 10.11.1).

r24 2/3                                                         Type of use of heaters
D03 can be activated via H81| 26| System integration heater

Note: The domestic hot water function must be enabled (see paragraph 10.2)
12.5.2.4 SINGLE SYSTEM/DHW INTEGRATION HEATER
By configuring the DHW integration heater, it is possible to use this heater declared also as plant integration heater, setting the parameter r15=2 and r24=3.
In case of plant integration demand, the heater declared as DHW integration is activated, thus allowing to have a single integration heater for plant, domestic hot water and plant under defrost.
12.5.2.5 INTEGRATION HEATER SELECTION MODE
The priority can be set in the order to activate the plant side and sanitary side integration heaters; specifically the configurations are:
1. r14=0 (default), the heaters can be activated simultaneously, if present;
2. r14=1, the heaters can be activated, excluding one another:
2.1. r20=0, priority to the plant (the DHW heater only switches on if the temperature control for the plant side heater is fulfilled);
2.2.r20=1, priority to DHW (the plant side heater only switches on if the temperature control for the sanitary side heater is fulfilled).
12.5.2.6 CIRCULATOR MANAGEMENT WITH HEATER ON
The circulator of the heat pump can be activated when the plant and/or DHW integration heaters are active with the compressors not running (by substitution, by alarm or by integration in bracket II or III).
-r33 = 0: The circulator of the heat pump is activated on demand of the compressors or boiler,
-r33 = 1: The circulator of the heat pump is activated if the plant heater is active.
-r33 = 2: 2: The circulator of the heat pump is activated if the DHW heater is active.
-r33 = 3: The circulator of the heat pump is activated if the plant or DHW heater is active.
The circulator switches off after post-pumping (P02).

12.5.3 BOILER ENABLING
Function which can be activated instead of managing the double setpoint.
This is an additional resource to enable the boiler in integration or substitution of the heat pump.
Define the use mode by setting the parameter r23:

• r23=0 (default) boiler not used (operating priority of heaters);

• r23=1 only boiler on plant used (operating priority of heaters);

• r23=2 only DHW boiler used (operating priority of heaters);

• r23=3 DHW and plant boiler used (operating priority of heaters); In the case of r31>0, when the DHW set point is reached, the DHW 3-way valve switches to the system;

• r23=4 only boiler on plant with priority used (no heater operating priority);

• r23=5 only boiler in sanitary with priority used (no heater operating priority);

• r23=6 boiler on plant and in sanitary with priority used (no heater operating priority); In the case of r31>0, when the DHW set point is reached, the DHW 3-way valve switches to the system.

•  r23=7 boiler use both in DHW and system (priority of resistor intervention). In the case of r31>0, when the DHW set point is reached, the DHW 3-way valve remains switched to DHW.

•  r23=8 boiler use in DHW and on system with priority (no priority to resistor intervention). In the case of r31>0, when the DHW set point is reached, the DHW 3-way valve remains switched to DHW.
  Define the supply of the boiler, setting parameter r32:

• r32 = 0: boiler without circulator with temperature control by heat pump,

• r32 = 1: boiler with autonomous circulator with temperature control by heat pump;

•  r32 = 2: boiler without circulator with autonomous temperature control;

• r32 = 3: boiler with circulator with autonomous temperature control.

12.5.4 ACTIVATION OF INTEGRATION HEATERS AND BOILER IN JOINT OPERATION AND IN SUBSTITUTION OF HEAT PUMP COMPRESSOR
The auxiliary parts that can be used for joint operation or for operation in substitution are:

• boiler
• plant integration heater
• DHW integration heater

Considering the operating modes in heating and/or DHW, there are 4 operating areas:

If you need to change the values of the parameters r22, r28, r08, follow r22 ≥ r28 ≥ r08.
Setting r22=r28 allows you to eliminate the zone relative to joint operation bracket I; setting r28=r08 allows you to eliminate the zone relative to joint operation bracket II; setting r22=r28=r08 allows you to eliminate both brackets relative to joint operation.
Do not modify value r08, as it could jeopardise operation of the unit
12.5.4.1 OPERATION IN HEAT PUMP MODE
Normal operation of the heat pump in which the integration resistors and/or the boiler only intervene when a heat pump alarm is triggered.
12.5.4.2 JOINT OPERATION (I BRACKET)
If the outdoor temperature is between r22 and r28, the compressor operates in synergy with the auxiliary heaters in winter or DHW mode.
In this operating bracket, first the heat pump is activated and after r12 minutes the plant side auxiliary heaters, or after r16 minutes the sanitary side auxiliary heaters.
The intervention priorities are defined by the parameters r14, r20, r23, r24.
It goes back to normal operation if the outdoor temperature is greater than r22+1.0 (°C).
NOTE: In the joint operating bracket, the boiler is temperature controlled by the plant water remote probe (if enabled). In particular, if the temperature detected by the remote probe is lower than the Hea setpoint, the boiler is switched on and then will go off when the temperature detected by the remote probe is higher than the Hea setpoint. The heat pump follows the activation logic described in paragraph 10.5.
If the remote plant water probe is not enabled, the boiler will be managed by the delivery probe of the heat pump.
12.5.4.3 JOINT OPERATION (II BRACKET)
If the outdoor temperature is between r28 and r08, the compressor operates in synergy with the auxiliary heaters.
In this operating bracket, first the boiler is activated, then the heat pump and auxiliary heaters intervene after a time defined by r12 (minutes) for the plant side and r16 (minutes) for the sanitary side
The intervention priorities are defined by the parameters r14, r20, r23, r24.
It goes back to normal operation if the temperature rises above r28+1.0 (°C).
Note: In the joint operating bracket, the boiler is temperature controlled by the plant water remote probe (if enabled). In particular, if the temperature detected by the remote probe is lower than the Hea setpoint, the boiler is switched on and then will go off when the temperature detected by the remote probe is higher than the Hea setpoint. The heat pump follows the activation logic described in paragraph 10.5.
If the remote plant water probe is not enabled, the boiler will be managed by the delivery probe of the heat pump.
12.5.4.4 OPERATION IN SUBSTITUTION
If the outdoor temperature drops below r08 use of the heat pump compressor will be inhibited.
– If the auxiliary system is composed of plant and/or DHW heaters, they are active in substitution of the compressor with defined times, r12 (minutes) for plant side and r16 (minutes) for sanitary side.
Whereas in the operation in substitution bracket, the integrations do not need to be enabled with r10 or r15 as the heaters need to operate in substitution (and not in integration) of the heat pump (therefore simply select the type of use with the parameter r24).
– If the auxiliary system is a boiler with autonomous circulator (r32 = 1 or 3).
The circulator of the heat pump is off, after P01 (default 30 seconds) the boiler is enabled.
NOTE: With water side antifreeze protection, the pump used is activated (or remains active) anyhow.
– If the auxiliary system in substitution is a boiler with autonomous temperature control (r32 = 0 or 2).
The boiler is enabled regardless of the temperature control of the heat pump.
– If the auxiliary system in substitution is a boiler without circulator (r32 = 0 or 2).
The circulator of the heat pump is on when the boiler is enabled.
The compressor switches back on if the temperature rises above r08+ r09 (°C) (r09=1.0 °C by default).
12.5.4.5 OPERATING BRACKETS – ACTIVATION OF INTEGRATION HEATERS (plant remote water probe not enabled)
The possible configurations of the integration parameters are listed in tables 1,2,3 and 4 shown below, divided by operating brackets (the operating modes and  possible values of the parameters are indicated  in the “STATUS” boxes and in the parameters “rxx” so that a given order of intervention of the integrations occurs in a certain operating mode of  the unit; other statuses and values of the  parameters can be selected instead and therefore they are provided in the same cell separated by the symbol ”/”).

| TABLE 1. NORMAL OPERATION IN HEAT PUMP
---|---

N°

| INTEGRATIONS INTERVENTION ORDER

(with set-point not reached and

machine blocked by alarm)

|

STATUS

|

OPERATION

|

r10

|

r15

|

r12

|

r16

|

r23

|

r24

7

| 1) DHW integration heater

2) After r16 minutes, boiler

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

| Set the min- utes|

2/3

|

2/3

8

| 1) Boiler

2) After r16 minutes, DHW integra-

tion heater

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

| Set the min- utes|

5/6

|

2/3

9

|

1. Plant/DHW integration heater

| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

|

/

|

/

|

0

|

3

10

|

1. Boiler

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

|

/

|

/

|

3/6

|

0

11

| 1) Plant/DHW integration heater

2) After r12 minutes, boiler

| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

| Set the min- utes| Set the min- utes|

3

| 3

12

| 1) Boiler

2) After r12 minutes, plant/DHW in-

tegration heater

| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

| Set the min- utes| Set the min- utes|

6

|

3

| TABLE 2. JOINT OPERATION, BRACKET 1
---|---
N°| INTERVENTION ORDER

(with setpoint not reached)

| STATUS| OPERATION| r10| r15| r12| r16| r23| r24

1

| 1) Heat pump

2) After r12 minutes, plant integration

heater

| HEAT / HEAT+SAN|

HEAT

|

1

|

0/1/2

| Set the min- utes|

/

|

0/2/5

|

1/3

2

| 1) Heat pump

2) After r12 minutes, boiler

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

1/3/4/6

|

0/2

3

| 1) Heat pump

2) After r12 minutes, plant integration

heater

3) After further r12 minutes, boiler

|

HEAT / HEAT+SAN

|

HEAT

|

1

|

0/1/2

|

Set the min- utes

|

/

|

1/3

|

1/3

4

| 1) Heat pump

2) After r12 minutes, boiler

3) After further r12 minutes, plant inte-

gration heater

|

HEAT / HEAT+SAN

|

HEAT

|

1

|

0/1/2

|

Set the min- utes

|

/

|

4/6

|

1/3

5

| 1) Heat pump

2) After r16 minutes, plant integration

heater

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

| Set      the

minutes

|

0/1/4

|

2/3

6

| 1) Heat pump

2) After r16 minutes, boiler

|

HEAT+SAN/

|

DHW

|

0/1

|

0/1/2

|

/

| Set      the

minutes

|

2/3/5/6

|

2/3

7

| 1) Heat pump

2) After r16 minutes, plant integration

heater

3) After further r16 minutes, boiler

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

|

Set      the

minutes

|

2/3

|

2/3

8

| 1) Heat pump

2) After r16 minutes, boiler

3) After further r16 minutes, DHW inte-

gration heater

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

|

Set      the

minutes

|

5/6

|

2/3

9

| 1) Heat pump

2) After r12 minutes, plant/DHW inte-

gration heater

| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

| Set the min- utes| Set      the

minutesi

|

0

|

3

10

| 1) Heat pump

2) After r12 minutes, boiler

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

| Set the min- utes| Set      the

minutes

|

3/6

|

0

11

| 1) Heat pump

2) After r12 minutes, plant/DHW inte-

gration heater

3) After further r12 minutes, boiler

|

HEAT / HEAT+SAN

|

HEAT/DHW

|

1

|

1

|

Set the min- utes

|

Set      the

minutes

|

3

|

3

12

| 1) Heat pump

2) After r12 minutes, boiler

3) After further r12 minutes, plant/

DHW integration heater

|

HEAT / HEAT+SAN

|

HEAT/DHW

|

1

|

1

|

Set the min- utes

|

Set      the

minutes

|

6

|

3

| TABLE 3. JOINT OPERATION, BRACKET 2
---|---
N°| INTERVENTION ORDER

(with setpoint not reached)

| STATUS| OPERATION| r10| r15| r12| r16| r23| r24

1

| 1) Boiler

2) After r12 minutes, heat pump

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

1/3/4/6

|

0/2

| TABLE 3. JOINT OPERATION, BRACKET 2
---|---
N°| INTERVENTION ORDER

(with setpoint not reached)

| STATUS| OPERATION| r10| r15| r12| r16| r23| r24

2

| 1) Boiler

2) After r12 minutes, plant integration

heater

3) After further r12 minutes, heat pump

|

HEAT / HEAT+SAN

|

HEAT

|

1

|

0/1/2

|

Set the min- utes

|

/

|

1/3

|

1/3

3

| 1) Boiler

2) After r12 minutes, heat pump

3) After further r12 minutes, plant inte-

gration heater

|

HEAT / HEAT+SAN

|

HEAT

|

1

|

0/1/2

|

Set the min- utes

|

/

|

4/6

|

1/3

4

| 1) Plant integration heater

2) After r12 minutes, heat pump

| HEAT / HEAT+SAN|

HEAT

|

1

|

0/1/2

| Set the min- utes|

/

|

0/2/5

|

1/3

5

| 1) Boiler

2) After r16 minutes, heat pump

|

HEAT+SAN

|

DHW

|

0/1

|

0/1/2

|

/

| Set the min- utes|

2/3/5/6

|

0/1

6

| 1) Boiler

2) After r16 minutes, DHW integration

heater

3) After further r16 minutes, heat pump

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

|

Set the min- utes

|

2/3

|

2/3

7

| 1) Boiler

2) After r16 minutes, heat pump

3) After further r16 minutes, DHW inte-

gration heater

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

|

Set the min- utes

|

5/6

|

2/3

8

| 1) DHW integration heater

2) After r16 minutes, heat pump

|

HEAT+SAN

|

DHW

|

0/1

|

1

|

/

| Set the min- utes|

0/1/4

|

2/3

9

| 1) Boiler

2) After r12 minutes, heat pump

| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

| Set the min- utes| Set the min- utes|

3/6

|

0

10

| 1) Boiler
2) After r12 minutes, plant/DHW inte- gration heater
3) After further r12 minutes, heat pump| HEAT / HEAT+SAN| HEAT/DHW| 1| 1| Set the min- utes| Set the min- utes| 3| 3

11

| 1) Boiler
2) After r12 minutes, heat pump
3) After further r12 minutes, plant/ DHW integration heater|

HEAT / HEAT+SAN

|

HEAT / SANITARIO

|

1

|

1

|

Set the min- utes

|

Set the min- utes

|

6

|

3

12

| 1) Plant/DHW integration heater
2) After r12 minutes, heat pump| HEAT / HEAT+SAN|

HEAT/DHW

|

1

|

1

| Set the min- utes| Set the min- utes|

0

|

3

| TABLE 4. OPERATION IN SUBSTITUTION
---|---
N°| INTERVENTION ORDER

(with setpoint not reached)

| STATUS| OPERATION| r10| r15| r12| r16| r23| r24

1

| 1) Boiler

2) After r12 minutes, Plant integration

heater

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

4/6

|

1/3

2

| 1) Plant integration heater

2) After r12 minutes, boiler

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

1/3

|

1/3

3

| 1) Boiler

2) After r12 minutes, DHW integration

heater

|

HEAT+SAN

|

DHW

|

0/1

|

0/1/2

|

/

| Set the min- utes|

5/6

|

2/3

4

| 1) DHW integration heater

2) After r12 minutes, boiler

|

HEAT+SAN

|

DHW

|

0/1

|

0/1/2

|

/

| Set the min- utes|

2/3

|

2/3

5

| 1) Boiler

2) After r12 minutes, Plant/DHW inte-

gration heater

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

| Set the min- utes| Set the min- utes|

6

|

3

6

| 1) Plant/DHW integration heater

2) After r12 minutes, boiler

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

| Set the min- utes| Set the min- utes|

3

|

3

7

|

1. Boiler

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

1/3/4/6

|

0/2

8

|

1. Plant integration heater

| HEAT / HEAT+SAN|

HEAT

|

0/1

|

0/1/2

| Set the min- utes|

/

|

0/2/5

|

1/3

9

|

1. Boiler

|

HEAT+SAN

|

DHW

|

0/1

|

0/1/2

|

/

| Set the min- utes|

2/3/5/6

|

0/1

10

|

1. DHW integration heater

|

HEAT+SAN

|

DHW

|

0/1

|

0/1/2

|

/

| Set the min- utes|

0/1/4

|

2/3

11

|

1. Boiler

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

| Set the min- utes| Set the min- utes|

3/6

|

0

| TABLE 4. OPERATION IN SUBSTITUTION
---|---
N°| INTERVENTION ORDER

(with setpoint not reached)

| STATUS| OPERATION| r10| r15| r12| r16| r23| r24

12

|

1. Plant/DHW integration heater

| HEAT / HEAT+SAN|

HEAT/DHW

|

0/1

|

0/1/2

| Set the min- utes| Set the min- utes|

0

|

3

Table 5 shows the settings to be configured to enable the integrations in “summer and sanitary” mode (in this case the only activation that can be activated is the DHW integration heater and the division into operating brackets does not apply).

| TABLE 5. OPERATION IN COOL+SAN (DHW RUNNING)
---|---

N°

| INTEGRATIONS INTERVENTION ORDER -With setpoint not reached after r16 minutes from the start-up of the com- pressor or with setpoint not reached with machine blocked by alarm.|

STATUS

|

OPERATION

|

r10

|

r15

|

r12

|

r16

|

r23

|

r24

1| 1) DHW integration heater| COOL+SAN| DHW| 0/1| 1| /| Set        theminutes| 0/1/2/3/4/5/6| 2/3

Table 6 shows the behaviour of the plant and DHW integration heaters in all the operating modes of the unit.

| TABLE 6. INTEGRATION HEATERS OPERATION
---|---
N°| STATUS| OPERATION| PLANT INTEGRATION HEATER| DHW INTEGRATION HEATER

1

|

HEAT+SAN

|

HEAT

|

Works as indicated in TABLE 1,2,3 and 4.

| In “HEAT+SAN”, by default sanitary temperature con- trol has priority over that of the plant, therefore if re- quired by the temperature control, the unit goes to “SANITARY” mode and the DHW integration heater acts

as indicated in TABLES 1,2,3 and 4.

2

|

HEAT+SAN

|

DHW

| Only if all 3 of the following conditions are met: -the output is configured for Plant integration heater;

– r24=1/3 ; – plant water temperature remote probe pres- ent and configured ;

the plant integration heater is activated in the following  situations:
–  r12 minutes after the start of its count acti- vated in “HEAT” mode previously running (see line 1);
–  if its count is not already activated in the pre- vious “HEAT” mode, r12 minutes after the tem- perature control demand.
–   In SANITARY mode, with remote probe not configured, the plant integration heater is de- activated or any of its counts are interrupted.
–  With “remote on-off” contact open, the Plant integration heater is deactivated.

|

Works as indicated in TABLES 1,2,3 and 4.

3| COOL+SAN| DHW| Cannot be activated| Works as indicated in TABLE 5.
4| COOL+SAN| COOL| Cannot be activated| Cannot be activated

12.5.4.6 AUXILIARY SYSTEMS OFFSET MANAGEMENT
Lastly you may establish that the boiler and/or integration heaters (according to the resources and selected priorities) have a setpoint in heating mode and in sanitary mode higher than that of the heat pump. This is achieved by setting an offset on the following setpoints:

• r29 = First setpoint temperature offset for boiler and plant heaters (G02);
• r30 = Second setpoint temperature offset for boiler and plant heater (G05);
• r31 = Temperature offset for boiler and DHW heaters (G03);

This way the heat pump stops at the setpoint (G02,G03,G05) and the temperature difference, according to the set outset, will be supplied by the boiler and/or heaters.
12.5.5 SYSTEM SEASON
A digital output can be configured indicating the operating season of the unit, plant side.
The output is active in summer mode, while it is deactivated in OFF or heating mode.
During DHW production and defrosting, the output maintains the setting of the source season.

12.5.6 ALARM
A voltage output can be configured to signal the presence of an alarm.

12.5.7 DEFROST
A digital output can be configured signalling defrosting in progress.

12.6 DEFROST CYCLE
The defrost cycle is only active in heat pump mode and is used to prevent the formation of ice on the surface of the air/air coil. The formation of ice on the evaporator, which is quite frequent with very low outdoor temperatures, in addition to considerably downgrading the thermodynamic performance of the unit, also risks damaging the unit itself.
If the unit is switched off by remote control during defrosting, the heat pump finishes defrosting and then places itself in off mode via remote control.
12.7 COMPRESSOR CRANKCASE HEATER
The crankcase heater is activated if the compressor has been off for at least 30 minutes and if the discharge temperature is below a certain threshold of 20 °C (with hysteresis of 2.0°C). The crankcase heater is disabled when the compressor starts back up.
12.8 DOUBLE SET-POINT
This function introduces a second working set-point on the plant side, both in cooling and heating mode.
The user terminal board allows a consent to be connected to switch from the first to the second set-point and configured at digital input ID9 with parameter H53 = 26. The valve, on the other hand, is connected in the terminal board to digital output DO7 and is configured via parameter H85.

H129

| 0| Function disabled (default)
1| Function configured but not active
2| Enabled only in cooling mode
3| Enabled only in heating mode
4| Enabled in cooling and heating mode

H138

| 0| DHW second setpoint function disabled (default)
1| Enabled the second DHW set point in cooling mode
2| Enabled the second DHW set point in heating mode
3| Enabled the second DHW set point in cooling and heating mode

12.9 MINIMUM HZ FUNCTIONALITY
Configuring parameter L02=1 and L03≠0 reduces the nominal operating Hz of the compressor.

With the function active, the output and power of the unit are limited, for additional information see the installer user manual.
Configuring a digital input ID9 with parameter H53=21, the function can be managed.

H53

| 0 (default)| Function disabled
21| Open contact -> standard mode Closed contact -> mode Hz min/max

12.10 MAXIMUM HZ FUNCTIONALITY
Activating the function increases the power of the unit, please contact us for information.
12.11 FLOWMETER
There is a flowmeter in each unit; it has the following characteristics:

Unit| Water measuring range [L/min]| Flow speed [m/s]| Flow rate [L/min]| Power supply

[Vdc]

| Current consumption without load| DN
---|---|---|---|---|---|---
0112 0115 0118| 5,0 – 85| 0,265 – 4,509| 0,5 – 150| 4.75 – 33| <5mA| 20

you can read the flow value in L/min from the remote display by pressing Enter -> SYS, and scrolling to S014.

FUNCTIONS THAT CAN BE ACTIVATED WITH HI-T2 ACCESSORY (OPTIONAL)

This is a touch screen remote control for centralised management of a chiller/heat pump network. It includes humidity and temperature sensors for the thermo hygrometric analysis of the environment and for the management of the double set point for radiant floor heating systems that use a dehumidification system.
The intuitive interface simplifies the use of the controller; all the functions can be easily set through the use of an easy to understand synoptic.
The Hi-T remote control allows you to manage the following functions:

• Remote management;
•  Management of a network, up to 7 heat pumps;
•  Zone thermostat;
• Screed function;
•  Antilegionella disinfection;
• Double set-point and humidity measurement;
• Dew point control;
• Climatic compensation;
• Booster circulator management;
•  Management of single pump in a network;
• Alarm diagnostic system.

For further information, see the user-installer manual, or contact our headquarters.

FUNCTIONS THAT CAN BE ACTIVATED WITH GI3 MODULE (OPTIONAL)

The GI3 module is an optional kit which allows you to manage the following functions:

• Booster circulator management with the aid of two room thermostats (not supplied);
• Management of a plant side mixer valve both in heating and cooling mode;
• Solar – thermal integration management.

14.1 I/O RESOURCES OF THE CONTROLLER
The following is the list of I/O (inputs and outputs) that can be set to activate the functions of the controller.

Resource| Parameter| Terminal block XGI| Factory configuration| Description
---|---|---|---|---
Default value| Function
ST 5E| H27| 6.1 / 6.2| 0| Not set| Analogue input configurable with an NTC-10kΏ probe at 25°C β 3435
ST 6E| H28| 7.1 / 7.2| 0| Not set| Analogue input configurable with an NTC-10kΏ probe at 25°C β 3435
ST 7E (activated if ID 8E is not active|

H29

|

8.1 / 8.2

|

0

|

Not set

| Analogue input configurable with an NTC-10kΏ probe at 25°C β 3435
ID 8E (activated if ST 7E is not active)|

H62

|

0

|

Not set

| Voltage-free digital input
ID 9E| H63| 9.1 / 9.2| 0| Not set| Voltage-free digital input
DO 1E| H86| 1.1 (phase)

1.2(neutral)

| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.
DO 2E| H87| 2.2 (phase)

2.2(neutral)

| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.
DO 3E| H88| 3.1 (phase)

3.2(neutral)

| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.
DO 4E| H89| 4.1 (phase)

4.2(neutral)

| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.
DO 5E| H90| 5.1 (phase)

5.2(neutral)

| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.

GI terminal block

14.2 MANAGEMENT OF SECONDARY CIRCULATOR/RELAUNCH PUMP (WITH ROOM THERMOSTAT)
Allows the management of two secondary or booster circulators serving the system.
This allows up to 2 secondary circuits with independent calls, one of which can be low temperature (mixed).
Two digital inputs and outputs are managed.

5.2(neutral)
DO4E can be activated via H89| 33| Secondary circulator circuit 2| 4.1 (phase) 4.2(neutral)

The various scenarios with their configuration are shown below:

Configuration| T.A. 1| T.A. 2| Secondary circulator circuit 1| Secondary circulator circuit 2| Mixing valve configuration (see chapter 14.3 mixing valve mangement)| Description
---|---|---|---|---|---|---
1| Single high temperature circuit| DI=19| –| DO=43| –| i06=0 (not enabled)| A.T. contact 1 manages the one room call and consequently activates the booster pump
2|

Two indipendent high temperature circuits

| DI=19| DI=32| DO=43| DO=33| i06=0 (not enabled)| The A.T. contact 1 works in the same way as for confi- guration 1, while the TA2 contact works in call for the output DO=33, which is managed as a booster pump for the secondary circuit 2, which in this configuration is also high temperature like the first.

3

|

Single mixed circuit

|

DI=19

or

DI=32

|

–

|

–

|

–

|

i06 > 0

DO=33 etc. (enabled)

| Contact T.A.1 works on the low-temperature circuit which is appropriately configured via the para- meters of the ‘rAd’ group. The output DO=33 acts as a booster pump for the

mixed circuit.

4| An independent high temperature and mixed circuit| DI=19| DI=32| DO=43| –| i06 > 0 DO=33 etc. (enabled)| Contact T.A. 1 manages the call for the first secondary circuit at high temperatu- re, activating the relative booster pump. Contact T.A. 2 manages the call for the second secondary circuit at low temperature (activation of DO=33 and relative adjustment of the mixing valve).
5| A high temperature circu- it and a mixed circuit| DI=19| –| DO=43| –| i06 > 0 DO=33 etc. (enabled)| The call is handled in parallel for both resources DO=33 and DO=43

With the heat pump in OFF position, the booster circulator will be switched off independently of the thermostat call.
If the machine is not equipped with either a remote plant sensor or a secondary circulator, the room thermostat thermoregulation is as follows:

regulation (DHW and defrosting not affected by the lockout). If the compressor| Shutdown of active compressors for room ther- moregulation is forced (DHW and defrosting not affected)

The secondary circulator is switched off with a delay given by P02 (post- pumping).
14.3 MIXER VALVE MANAGEMENT
The mixer valve is regulated by means of specific PID which strives to maintain the delivery temperature of the radiant panel at the set value.
The setpoint setting can be found in the ‘Set’ Menu:
rCoo = Mixer flow temperature setpoint in cooling mode = 15°C (default)
rHea = Mixer flow temperature setpoint in heating mode = 30°C (default)
The resources and the parameters to be setting are the following:

I/O resource – Parameter| Description| Value| Function| X terminals
---|---|---|---|---
ST 5E can be activated via H27| Analogue input| 44| Mixer probe| 1.1 / 1.2
ID9E can be activated via H63| Digital input| 19 or 32| Room thermostat 1 or 2| 4.1 / 4.2
DO1E can be activated via H86| Voltage output| 34| Valve open command| 5.1 (phase) / 6.2(neutral)
DO2E can be activated via H87| Voltage output| 35| Valve close command| 5.2 (phase)
DO3E can be activated vi H88| Voltage output| 33| Mixer pump| 7.1 / 7.2
i01| Valve opening time| Recover the value from the technical data supplied installed| |
i02| Interval between two interruptions| 30 seconds1| |
i03| PID proportional band| 2°C2| |
i04| PID integral time| 300 seconds3| |
i05| PID derivative time| 0 4| |
i06| Mixer management only active in heating mode| 1| |
Mixer management only active in cooling mode| 2| |
Mixer management only active in heating and cooling mode| 3| |
i07| mixing valve in all recirculation inactive, in absence of call| 0| |
mixing valve in all recirculation active, in absence of call| 15

1Recommended value. Time interval between one corretion and the next.
2Recommended value. Intervention area defined by the difference between the setpoint for the mixer flow and the temperature measured by mixing flow probe.
3Recommended value. Time taken by the mixing valve to switch from open to closed and vice versa, when the difference between setpoint set for the flow of the mixing valve and the value read by the mixing probe is greater than or equal to proportional band. The more larger this value, the slower the change in approach to the setpoint set for the mixing valve flow.
4 Derivate component of regulation; use only if you have a good knowledge of regulator logic.
5 i07=1: in the following cases the mixing valve closes completely:

• with the room thermostat of the low-temperature circuit active, when I change the operating mode of the PDC from Heat (or Cool) to OFF, the DO “Valve close command” is activated for i01 seconds.
• If I open the room thermostat contact of the low-temperature circuit, the DO ‘Valve closing command’ is activated for i01 seconds.

14.3.1 Determination of setpoint
The setpoint on which to perform regulation is given by rCOO or rHEA respectively in cooling and heating mode. If dynamic compensation of the setpoint is enabled (b08=1), then the setpoint will be corrected the same way as the heat pump/chiller.
The maximum and minimum value reached by the compensation are not controlled. Therefore the parameters must be configured so that the setpoints are not brought to unwanted values outside of the allowed work ranges.
14.3.2 Mixing pump
The mixing pump (DO3E) switches on when there is a call from the digital input ambient thermostat (ID9E) and switches off with a delay of P02 from the instant the thermostat call ceases.
14.4 SOLAR INTEGRATION MANAGEMENT
To enable te function, set S01=1.

7.1 / 7.2
Parameter| Description| Value| Function| X terminals
---|---|---|---|---
ST7E can be activated via H29| Analogue input| 38| Solar collector probe| 8.1 / 8.2
DO3E can be activated via H88| Live output| 30| Solar circulator| 3.1 (phase) 3.2(neutral)
DO4E can be activated via H89| Live output| 45| Solar exhaust valve| 4.1 (phase) 4.2(neutral)

14.4.1 Activation of solar circulator
Solar management is also active with the unit off.
The solar circulator is active in both of the following conditions are met:
• The temperature of the solar collector is higher than that defined by parameter S13 (default 40°C), the solar circulator is activated;
• The temperature difference between the solar collector and that of the solar storage tank is higher than the parameter S02 (default 6°C).
14.4.2 Collector protection
If the temperature of the collector exceeds parameter S04 (default 110°C), the solar circulator is periodically on intermittently with the times set in:
• S05 = time ON (default 15 seconds);
• S06 = time OFF (default 15 seconds).
As hysteresis to exit the protection condition use S08 (default 2°C).
This protection is guaranteed even with the machine Off.
14.4.3 Collector overtemperature alarm
If the collector probe exceeds the value of parameter S12 (default 130°C), there is an alarm condition E10 which blocks the solar circulator. The hysteresis to return from the alarm condition is given by parameter S08 (default 2°C).
If an alarm is triggered, operation of the heat pump is guaranteed.
14.4.4 DHW overtemperature alarm
If the temperature of the DHW storage tank exceeds the parameter S10 (default 80°C), the alarm E50 is triggered.
The hysteresis to return from the alarm condition is given by parameter S11 (default 2°C).
If an alarm is triggered, operation of the heat pump is guaranteed.
14.4.5 Solar exhaust valve
If alarms E10 and E50 are triggered simultaneously, the solar exhaust valve will be activated.
It is recommended to connect the output of terminals 8.1 (phase) – 8.2 (neutral) to a timed relay to manage the flow of the exhaust valve. If any doubts arise, contact our headquarters.
14.4.6 Disposal of solar tank heat
The solar circulator runs to dissipate excess heat in the storage tank by exploiting the solar collector if both of the following conditions are met:
-The temperature of the DHW storage tank is higher than parameter S15 (default 60°C);
-The temperature of the solar collector is lower than 35°C (parameter S13 – parameter S14).
The solar collector is off when at least one of the following conditions is met:
-The temperature of the DHW storage tank is lower than parameter S15 (default 60°C).
-The temperature of the collector exceeds the parameter S13 (default 40°C), as conditions are no longer in place for proper dissipation of the heat.
14.4.7 Antifreeze
Function active if the parameter S01 = 1.
If the temperature of the solar collecor is lower than parameter S07 (default 5°C), the solar circulator is activated in antifreeze mode.
This protection is only enabled with the machine Off.
The function is inhibited if the temperature of the DHW storage tank is lower than the value defined in parameter S16 (default 20°C).
This regulator also works with the unit Off.
Setting the parameter S01 = 2, the antifreeze function is never active (for example because the solar plant is supplied with glycol).
Be careful as enabling this function could damage the entire system.
Note:

• Solar integration is NOT managed if the controller of the unit is OFF.
• The remote digital input OFF has no effect on solar management.
• During first ignition, check that the probe of the solar collector measures a temperature lower than 160°C and that this temperature corresponds to that read on the controller of the internal unit.
•  Solar circulator live output 230V ac, 50Hz, 2A (AC1).
• For higher absorptions, connect the output to the contactor coil.
• Factory-set parameters for solar management, any other configurations are the responsibility of the user and/or installer. The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.

TABLES OF PERMITTED SETUPS FOR USER AND INSTALLER

| CAUTION
---|---
All the operations with INSTALLER visibility must be carried out by QUALIFIED PERSONNEL.
Not all of the configurations can be activated and/or modified at the same time.
Values other than the default values can jeopardise proper operation of the unit. If in doubt on which value to set, contact our headquarters.
The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.

We shall not be held liable for any breakage or malfunctioning caused by third parties changing the default parameters if not expressly authorised to do so.
The following is the table of the allowed configurations; not all of them can be selected simultaneously.
Values other than the default values can jeopardise proper operation of the unit. If in doubt on which value to set, contact our headquarters.

Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
Coo| First cooling setpoint| °C| 7.0| 25÷Coo2| U| |
Hea| First heating setpoint| °C| 45.0| Hea2÷H01| U| |
San| Sanitary setpoint| °C| 48.0| 25÷H01| U| | If sanitary   function

active. See par. 10.2

Coo2| Second cooling setpoint| °C| 18.0| Coo÷25| U| |
Hea2| Second heating setpoint| °C| 35.0| 25÷Hea| U| |
*rCOO| Mixing valve summer set-

point

| °C| 15.0| -50÷80| I| | Config if Gi accessory

present

*rHEA| Mixing valve winter setpoint| °C| 30.0| -50÷80| I| | Config if Gi accessory

present

San2| Second sanitary setpoint| °C| 45.0| 0÷80| l| |
H01| Maximum heating setpoint| °C| 75.0| -50÷80| l| |
H04| Mnimum cooling setpoint| °C| 5.0| -50÷80| l| |
H10| Sanitary function enabling| /| 0| 0÷6| I| See par. 10.2|
H17| Input configuration

Analogue ST6

| /| 0| 0÷49| I| 0 = Input disabled

6 = Domestic hot water probe

|

H18

| Input configuration Analogue ST7|

/

|

0

|

0÷49

|

I

| 0 = Input disabled

41 = Remote water temperature

probe

|
*H27| Input configuration

Analogue ST5E

| /| 0| 0÷49| I| 0 = Input disabled

44 = Mixer probe

| Only if  Gi  accessory

present

*H28| Input configuration

Analogue ST6E

| /| 0| 0÷49| I| 0 = Input disabled

39 = Solar storage tank probe

| Only if  Gi  accessory

present

*H29| Input configuration

Analogue ST7E

| /| 0| 0÷49| I| 0 = Input disabled

38 = Solar collector probe

| Only if  Gi  accessory

present

*H30| Input configuration

Analogue ST8E

| /| 0| 0÷49| l| | Only if  Gi  accessory

present

H46| Input configuration

Digital ID2

| /| 0| 0÷30| I| 0 = Input disabled

3 = Summer/winter mode change

|
H47| Input configuration

Digital ID3

| /| 2| 0÷30| I| 0 = Input disabled

2 = Remote On / Off

|

H53

|

Input configuration Digital ID9

|

/

|

0

|

0÷30

|

I

| 0 = Input disabled

21= Hz min/max remote 25= Silenced version

26 = Double set-point call

28 = DHW thermostat call

|
*H60| Input configuration Digital

ID6E

| /| 0| 0÷30| l| | Only if  Gi  accessory

present

*H61| Input configuration Digital

ID7E

| /| 0| 0÷30| l| | Only if  Gi  accessory

present

*H62| Input configuration Digital

ID8E

| /| 0| 0÷30| l| | Only if  Gi  accessory

present

*H63| Input configuration

Digital ID9E

| /| 0| 0÷30| I| 0 = Input disabled

19 = room thermostat

| Only if  Gi  accessory

present

H75

|

Digital inputs polarity

|

/

|

0

|

0÷255

|

I

| 0 = Digital inputs N.A.

1 = ID1 polarity inverted 2 = ID2 polarity inverted 4 = ID3 polarity inverted 8 = ID4 polarity inverted 16 = ID5 polarity inverted 32 = ID6 polarity inverted 64 = ID7 polarity inverted

128 = ID8 polarity inverted

|

H76

|

Digital inputs polarity

|

/

|

0

|

0÷255

|

I

| 0 = Digital inputs N.A.

1 = ID9 polarity inverted 2 = ID10 polarity inverted

4 = ID1E1 polarity inverted 8 = ID2E1 polarity inverted 16 = ID3E1 polarity inverted 32 = ID4E1 polarity inverted 64 = ID5E1 polarity inverted

128 = ID6E1 polarity inverted

|

H81

| Output configuration In DO3 power|

/

|

22

|

0÷48

|

I

| 0 = Output disabled

22 = Plant integration heater

26 = DHW integration heater

|
H82| Output configuration

In DO4 power

| /| 14| 0÷48| | 0 = Output disabled

= Resistenza scambiatore

|
H83| Output configuration

In DO5 power

| /| 28| 0÷48| | 0 = Output disabled

= Base resistance

|
H84| Output configuration

In DO6 power

| /| 6| 0÷48| I| 0 = Output disabled

6 = DHW valve

|
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes

H85

|

Output configuration In DO7 power

|

/

|

25

|

0÷48

|

l

| 0 = Output disabled

25 = Double set-point valve 29 = Boiler enabling

24 = Alarm warning

31 = Summer/winter operating mode warning

21 = Defrost warning

47 = Machine block warning

|
*H86| Output configuration

In voltage DO1E

| /| 0| 0÷48| I| 0= Output disabled

34= Valve opening command

| Only if  Gi  accessory

present

*H87| Output configuration

In voltage DO2E

| /| 0| 0÷48| I| 0= Output disabled

35= Valve closing command

| Only if  Gi  accessory

present

*H88| Output configuration

In voltage DO3E

| /| 0| 0÷48| l| 0 = Output disabled

30 = Solar circulator

| Only if  Gi  accessory

present

*H89| Output configuration

In voltage DO4E

| /| 0| 0÷48| l| 0 = Output disabled

45 = Solar exhaust valve

| Only if  Gi  accessory

present

*H90| Output configuration

In voltage DO5E

| /| 0| 0÷48| l| 0 = Output disabled

43 = Secondary circulator

| Only if  Gi  accessory

present

H100

|

Digital output polarity

|

/

| |

0÷255

|

l

| 0 = Digital inputs N.O.

1 = Inverted polarity of DO1 2 = Reversed polarity of DO2 4 = Reversed polarity of DO3 8 = Reversed polarity of DO4

16 = Reversed polarity of DO5 32 = Reversed polarity of DO6 64 = Reversed polarity of DO7

128 = Reversed polarity of DOE1

|

To reverse more than one polarity, do the sum of those you want to invert

H101

|

Digital output polarity

|

/

|

0

|

0÷255

|

l

| 0 = Digital inputs N.A.

1 = Reversed polarity of DO2E 2 = Reversed polarity of DO3E 4 = Reversed polarity of DO4E 8 = Reversed polarity of DO5E 16 = Reversed polarity of DO6E

32 = Reversed polarity of DO7E

|

To reverse more than one polarity, do the sum of those you want to invert

H124

|

Serial baud rate

|

baud

|

1

|

0÷3

|

l

| 0=4800 baud

1=9600 baud

2=19200 baud

3=38400 baud

|

H125

|

Serial parity

|

/

|

2

|

0÷3

|

l

| 0=none parity, 2 stop bits 1=odd parity, 1 stop bit 2=even parity, 1 stop bit

3=none parity, 1stop bit

|

H126

|

Serial address

|

/

|

1

|

0÷200

|

l

| In the cascade configuration, assign a different address to each control-

ler.

|
H129| Enable second setpoint| /| 0| 0÷4| l| |

H130

| Heating with DHW storage tank|

/

|

0

|

0÷1

|

l

| 0 = Normal operation

1 = In Heating, machine always

turned towards DHW

|

H136

| OFF state deactivation with ID presence ON/OFF re-

mote

|

/

|

0

|

0÷1

|

l

| |

H138

|

Enabling second set point for DHW

|

/

|

0

|

0÷3

|

I

| 0 = DHW second set point function disabled (default)

1 = Enabled the second domestic set point in cooling mode

2 = Enabled the second DHW set point in heating mode

3 = Enabled the second domestic set

point in cooling and heating

|
H141| Priority        communication

channels Modbus

| /| 1| 0÷1| I| 0 = Priority on channel 1 (CN14)

1 = Priority on channel 2 (CN12-N13)

|

H142

|

MODBUS 2 serial baud rate (CN12 – CN13)

|

/

|

1

|

0÷3

|

I

| 0 = 4’800 Baud

1 = 9’600 Baud

2 = 19’200 Baud

3 = 38’400 Baud

|

H143

|

Parity and Stop Bit serial MODBUS

|

/

|

2

|

0÷3

|

I

| 0 = No parity, 2 Stop bits 1 = ODD Parity, 1 Stop Bit 2 = EVEN parity, 1 Stop Bit

3 = No parity, 1 Stop Bit

|
H144| Serial address for MODBUS| /| 0| 0÷127| I| 0 = same address as Serial Mocbus

1 (H126)

|
A08| Antifreeze alarm activation

setting

| °C| 3| -127÷127| l| Different values   can   jeopardise

proper operation of the unit

|
b01| Compressor         regulation

band in cold

| °C| 2| 0,5÷5,0| l| |
b02| Compressor         regulation

band in hot

| °C| 2| 0,5÷5,0| l| |
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
b04| Radiant panels valve switch-

ing time

| sec| 30| 0÷600| l| Different values   can   jeopardise

proper operation of the unit

|
b05| Compressor cut-off hyster-

esis

| °C| 0| 0,5÷5| l| |
b06| Sanitary valve stroke time| sec| 45| 0÷255| I| |
b08| Enable dynamic setting| /| 0| 0÷1| I| |
b09| Maximum cooling offset| °C| 3.0| -50.0÷80.0| I| |
b10| Maximum heating offset| °C| -3.0| -50.0÷80.0| I| |
b11| Cooling outdoor tempera-

ture setting

| °C| 25| -127÷127| I| |
b12| Heating outdoor tempera-

ture setting

| °C| 15| -127÷127| I| |
b13| Cooling temperature delta| °C| -10.0| -50.0÷80.0| I| |
b14| Heating temperature delta| °C| 10.0| -50.0÷80.0| I| |
b15| 0-10V analogue input set-

ting decalibration band

| °C| 5.0| 0.0÷25.5| I| |
b21| System    water     reversing

valve switching time

| sec| 0| 0÷600| l| |
b22| Plant probe   temperature

control cut-off hysteresis

| °C| 5.0| 0.0÷25.5| I| |
b24| Maximum ∆T,set for com-

pressors restart

| °C| 7.0| 0.0÷25.5| l| |
b25| Compressor cut-on hyster-

esis

| °C| 3.0| 0.0÷25.5| l| |

b30

| Enabling            compressor switch-off with room call

satisfied

|

–

|

0

|

0÷1

|

l

| 0 = function disable 1 = function active|
P01| Pump ON compressor ON

delay

| sec| 30| 0÷255| I| |
P02| Pump OFF compressor OFF

delay

| min| 2.0| 0÷25.5| I| |

P03

|

Pump operating mode

|

/

|

0

|

0÷1

|

I

| | The pump is always on if the antifreeze

heaters are active.

P04| Pump setting in antifreeze| °C| 5| -15÷15| I| |
P05| Pump hysteresis   in   anti-

freeze

| °C| 2.0| 0.0÷15.0| I| |
P06| Set delta T water pump in

heating

| °C| 4°C| 0÷255| l| |
P07| Maximum pump speed| �| 100%| 65÷100| l| |
P08| Minimum pump speed| %| 75%| 50÷100| l| |
P09| Modulating pump inlet/out-

let water delta T setting

| °C| 2.0| 0÷15| I| |
P16| Interval between 2 periodi-

cal activations of the pump

| min| 0| 0÷600| I| |
P17| Operating time of the pump

in periodical mode

| sec| 0| 0÷255| I| |

r02

|

Antifreeze heaters setpoint in heating mode

|

°C

|

4

|

3÷6

|

I

| | Only change in the presence of glycol water. Contact our

headquarters.

r03

|

Antifreeze heaters setpoint in cooling mode

|

°C

|

4

|

3÷6

|

I

| | Only change in the presence of glycol water. Contact our

headquarters.

r06

|

Antifreeze heaters delta

|

°C

|

2.0

|

0.0÷25.5

|

I

| | Only change in the presence of glycol water. Contact our

headquarters.

r08

|

Operation in   substitution

upper limit

|

°C

|

-20

|

-20÷50

|

I

|

Respect r22 ≥ r28 ≥ r08

| Do not modify this value, as it could jeopardise operation

of the unit

r09| Hysteresis for heat pump

blockage

| °C| 1,0| 0,0 ÷10,0| | |
r10| Plant integration enabling| /| 0| 0÷1| I| 0 = Function disabled

1 = Function enabled

|
r11| Plant    integration  heater

delta

| °C| 0.5| 0,0÷25.5| I| |
r12| Plant/heat   pump   integra-

tion heater activation delay

| min| 8| 0÷255| I| |
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes

r14

| Compressor bypass on system with sanitary heat- ing element active|

/

|

0

|

0÷1

|

I

| r14 = 1 during activation of the sani- tary heating elements is not permit- ted the use of plant-side compres-

sors is not permitted

|
r15| DHW integration enabling| /| 0| 0÷2| I| 0 = Function disabled

1 = Function enabled

|
r16| DHW/heat   pump   integra-

tion heater activation delay

| min| 8| 0÷255| I| |

r19

| Duration of tray heater ac- tivation

since last defrost

|

min

|

8

|

0÷255

|

I

| 0= resistance always active during defrost.|

r21

| Enables plant side mitiga- tion

with   heaters    in    defrost

mode

|

/

|

0

|

0÷1

|

I

|

0= Function disabled

1= Function enabled

|

r22

|

Joint operation bracket I up- per limit

|

°C

|

7

|

-16÷50

|

I

|

Respect r22 ≥ r28 ≥ r08

| Do not modify this value, as it could jeopardise operation

of the unit

r23| Type of use of boiler| /| 0| 0÷8| I| |
r24| Type of use of integration

heaters

| /| 3| 0÷3| I| |
r25| Disinfection setpoint| °C| 80| 0÷100| l| |
r26| Disinfection duration| min| 12| 0÷255| l| |
r27| Heat pump setpoint in dis-

infection

| °C| 55.0| -500÷800| l| |

r28

|

Joint operation bracket II

upper limit

|

°C

|

-7

|

-16÷50

|

I

|

Respect r22 ≥ r28 ≥ r08

| Do not modify this value, as it could jeopardise operation

of the unit

r29

| First setpoint temperature offset for  boiler and plant

heaters (HEA)

|

°C

|

0

|

0÷100

|

I

| |

r30

| Second setpoint tempera- ture offset for boiler and

plant heater (HEA2)

|

°C

|

0

|

0÷100

|

I

| |
r31| Temperature offset for boil-

er and DHW heaters (SAN)

| °C| 0| 0÷100| I| |
r32| Boiler supply| /| 0| 0÷3| I| |
r33| Pump management   with

heaters active

| /| 3| 0÷3| I| |

r34

|

Disinfection day

|

/

|

0

|

0÷7

|

U

| 0 =Disabled

1 =Monday

2 =Tuesday

3 =Wednesday

4 =Thurday

5 =Friday

6 =Saturday

7 = Sunday

|
r35| Disinfection time (minute of

the day)

| /| 0| 0÷1439| U| |

r36

|

Anti-loop time on sanitary operation

|

min

|

0

|

0÷255

|

l

| | Control to prevent the machine remain in sanitary produc- tion indefinitely in- definitely because does not reach the set point.

Control active if pa- rameter R36 is dif- ferent from 0. In this case, the time of r36 is counted since the compressor started to work in the DHW mode. If the produc- tion of the DHW is not finished within r36 minutes, then you exit forced out of

sanitary production.

r37

|

Boiler operation in cooling + DHW mode

|

/

|

1

|

0÷2

|

l

| 0 = Boiler not used

1 = Boiler used in integration

2 = Boiler does DHW and PDC does

plant.

|
r38| Heat pump blockage thresh-

old for high T

| °C| 35| -127÷127| l| |
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
r39| Heat pump blockage thresh-

old for high Text in heat

| °C| 46| -127÷127| l| |
d04| Defrost output pressure| bar| 18.0| -500÷800| l| |
d08| Minimum time between de-

frost and next

| min| 35| 0÷255| l| |
L02| User enablement for min.

Hz function

| /| 0| 0÷1| I| |
L03| Active min. Hz| /| 7| 0÷7| I| |
s01| Solar thermal enabling| /| 0| 0÷2| l| |
s02| Solar ∆T| °C| 0| 0÷25.5| l| |
s03| Solar hysteresis| °C| 0| 0÷25.5| l| |
s04| Maximum solar   tempera-

ture

| °C| 0| 0÷255| l| |
s05| Pump on time in maximum

solar temperature

| sec| 0| 0÷255| l| |
s06| Pump off time in max. solar

temp

| sec| 0| 0÷255| l| |
s07| Solar antifreeze set| °C| 0| -127÷127| l| |
s08| Solar antifreeze hysteresis| °C| 0| 0÷25.5| l| |
s09| Constant for calculating so-

lar power output

| /| 0| 0÷999| l| |
s10| Maximum solar DHW stor-

age temperature thresold

| °C| 0| 0÷255| l| |
s11| Solar sanitary hysteresis| °C| 0| 0÷25.5| l| |
s12| Solar collector overfill alarm

threshold

| °C| 0| 0÷255| l| |

s13

| Minimum        temperature

threshold collector for acti-

vation solar

|

°C

|

0

|

0÷255

|

l

| |
s14| Hysteresis for sanitary cool-

ing

| °C| 0| 0÷25.5| l| |
s15| Sanitary cooling threshold| °C| 0| 0÷255| l| |

s16

| Minimum        temperature

thresold     collector     anti-

freeze storage

|

°C

|

0

|

0÷255

|

l

| |
*i01*| Valve opening time| sec| 0| 0÷600| l| |
i02**| Interval between two cor-

rections

| sec| 0| 0÷600| l| |
*i03*| PID proportional band| | 0| 0÷80.0| l| |
i04| PID integral time| sec| 0| 0÷2000| l| |
i05| PID derivative time| sec| 0| 0÷25.5| l| |
i06**| Radiant panel configuration| /| 0| 0÷3| l| |
*i07| mixing valve in all recircula-

tion, when no call is made

| /| 0| 0÷1| l| |
Ac09| Flow-meter minimum water

flow rate

| l/min| 0.0| 0÷100| l|

See par. “Flowmeter”

|
Ac10| Flowmeter outlet   at   the

minium flow rate

| Volt| 0.0| 0÷100| l|

Ac11

| Maximum flowmeter flow

rate (0106, 0109)

|

l/min

| 50.0| 0÷800|

l

|
Maximum flowmeter flow

rate (0112, 0115,0118)

| 85.0| 0÷800
Ac12| Flow meter outlet at the

maximum flow rate

| Volt| 0.0| 0÷100| l|

(*) If Gi module is present GI3

ALARMS

By placing the controller in OFF mode, the alarms reset and the counts of the relative hour interventions are also reset. If the alarms are still triggered when switching the unit back on, contact technical assistance. The values indicated below could be subject to updates. If you have any doubts, contact our headquarters.
16.1 [E006] FLOWMETER
The water side flowmeter is already installed inside the unit and MUST NOT be tampered with or bypassed in any way. The flow switch is bypassed for 10 seconds after the unit is switched on. When the bypass time has elapsed, you must evaluate the status of the digital input, if active, the flow is considered present. If the flow is found to be missing for 5 seconds, the alarm is triggered and the circulator switches on for 120 seconds If the alarm triggers more than 3 times an hour, it must be reset manually.

The alarm does not trigger in the following conditions:

• During domestic hot water production;
• During the plant venting cycle function.

16.2 [E018] HIGH-TEMPERATURE
If the water delivery probe detects a value higher than 65°C for longer than 50 seconds, the alarm is active only in chiller mode. It deactivates when the temperature returns below 62°C.
16.3 [E020] INCONGRUENT PRESSURES
For compressor enabled for more than 150 seconds, the suction pressure probe detect a pressure higher than the condensation pressure probe, the alarm displayed is E020. The alarm is not resettable (it is necessary to cut the power supply to eliminate the alarm).
This alarm is not in defrosting mode.
16.4 [E005] ANTIFREEZE
If the outlet water probe has a value lower than A08 (3°C), the alarm is active. It deactivates if the temperature recorded by the probe is higher than +6°C. The alarm is bypassed for 120 seconds from switch on in heating mode.
16.5 [E611÷E681] PROBE ALARMS
The alarm is triggered if any connected or enabled probe is short-circuited or interrupted.
The alarm also triggers if the upper limit (100°C) or the lower limit (-50°C) of the probes is exceeded. A probe figured as sanitary probe will not trigger any alarms if domestic hot water is not enabled.
NOTE:
If the pressure switch on the machine detects a pressure exceeding 30,5 bar the driver and the compressor are powered off and probe error E641 is displayed (Compressor discharge probe fault).
The alarm is cleared when the pressure drops below 23 bar.
16.6 [E801] TIMEOUT INVERTER
When the machine’s controller does not communicate with the driver board of the compressor, a timeout alarm is triggered to avoid losing control of the system.
16.7 [E801 ÷E981] INVERTER
Inverter alarms are indicated in the section ‘Alarm Table Utility Block’.
NB: alarm E981 “Inverter high pressure”:

• alarm intervention up to 3 times in one hour: resets automatically after pressure switch reset (after 140 seconds for sizes 106, 109 and 112, after 30 seconds for sizes 115 and 118).
•  requires a manual reset if it trips more than 3 times in one hour.

16.8 [E00] REMOTE ON/OFF (WARNING)
If the unit is controlled by a remote digital input. See par. 10.4.1
16.9 [E001] HIGH-PRESSURE
If the pressure transducer on the unit detects a pressure higher than 30,3 bar the alarm is triggered.
In this case the compressor is blocked immediately. The alarm is reset when the pressure drops below 21,3 bar. If the alarm triggers more than 3 times an hour, it must be reset manually.
16.10 [E002] LOW-PRESSURE
In chiller mode, if the pressure transducer on the unit detects a pressure lower than 1,7 bar, the alarm is triggered.
In heat pump mode, if the pressure transducer on the unit detects a pressure lower than 0,7 bar, the alarm is triggered.
The alarm is reset when the pressure rises 2.0 bar above the triggering threshold.
A bypass time of 60 seconds is counted every time the compressor is activated.
When the alarm is triggered, it blocks the compressors of the circuit. The alarm is reset manually if it triggers 3 times an hour.
16.11 [E008] DRIVER LIMITATION
If the compressor does not reach the speed at the intended ramp value within 30 minutes, the alarm is triggered and the compressor switches off for safety purposes.
The alarm is reset manually if it triggers 3 times an hour.
16.12 [E041] 4-WAY VALVE
Manually reset alarm, it identifies malfunctioning of the 4-way reversing valve.
The alarm does not trigger for a bypass time of approximately 180 seconds from start-up of the compressor.

• In heating and sanitary mode, the alarm is triggered when, the bypass time having elapsed, the water delivery temperature is lower than the
  water return temperature of the heat pump – 1°C.

• In cooling mode, the alarm is triggered when, the bypass time having elapsed, the water delivery temperature is higher than the water
  return temperature of the heat pump + 1°C.

16.13 POWER FAILURE
When restored:

• The instrument goes back to the condition it was in prior to the power failure
• if a defrost cycle is in progress, it is cancelled
• all of the timers in progress are cancelled and reinitialized

16.14 UTILITIES BLOCK ALARM TABLE

Machine
E651| Outdoor air probe failure| Machine
*E652| Mixer probe failure| Machine
E661*| DHW probe failure| Machine
E662| Solar storage tank probe failure| Machine
E671**| Plant remote probe failure| Machine
*E672| Solar collector probe failure| Machine
E691| Low pressure transducer failure| Machine
E701| High pressure probe failure| Machine
E711| Voltage input failure 0-10V DC| Machine
E801| Inverter timeout| Compressor
E821| IPM module overcurrent| Compressor
E831| PFC module overheating| Compressor
E841| Inverter abnormal voltage DC Bus side| Compressor
E851| Inverter Hardware problem| Compressor
E861| Inverter current too high| Compressor
E871| High temperature IPM module| Compressor
E881| Supply voltage out of limits| Compressor
E891| One or more compressor supply phases absent| Compressor
E901| Inverter model error| Compressor
E911| Inverter overload error| Compressor
E921| Inverter PFC module overcurrent| Compressor
E931| Internal communication error| Compressor
E941| PFC model fault| Compressor
E951| Inverter board probe error| Compressor
E961| Abnormal condition| Compressor
E971| EEPROM error| Compressor
E981| High pressure inverter| Compressor

(*) If Gi module present

MODBUS VARIABLES

The controller is configured as follows by default:

To configure the Modbus communication according to your requirements, you must modify the following logs:

H124 : BAUD RATE

0| 4800
1| 9600
2| 19200
3| 38400
H125 : PARITY, STOP BIT

0| NONE, 2 bit
1| ODD, 1 bit
2| EVEN, 1 bit
3| NONE, 1 bit
H126 : DEVICE ID| 1 ÷ 200
---|---

Modbus comands:

Firmaware informa- tion

| Firmaware versione|
2| INT| –| R| –| Firmware release|
3| BYTE (H)| –| R| –| Firmware sub-release|
BYTE (L)| –| R| –| Firmware creation day|
4| BYTE (H)| –| R| –| Firmaware creation month|
BYTE (L)| –| R| –| Firmware creation year|
80 ÷ 97| ASCII| –| R| –| Serial number| Registration number|
444| INT| –| R| 0 ÷ 800| Water flow rate| |
1089| INT| –| R/W| 1 ÷ 200| Serial address| Modbus serial ID|

200

|

INT

| –| R| –|

Machine settings

| (0) Stand by|

Reading values of

the machine status

–| R| –| (1) Cooling
–| R| –| (2) Heating
–| R| –| (4) Only sanitary mode¹
–| R| –| (5) Cooling + Sanitary¹
–| R| –| (6) Cooling + Sanitary¹

7201

|

BIT MASK

|

0

|

R/W

|

–

| Enablement of writing the machine status remotely| Necessary for the operation of the

reg. 7200.

7200

|

INT

| –| W| –| (0) Stand by| The writing values that are not allowed at this address can lead to unexpected operations, so keep only those values that are allowed in writing.
–| W| –| (1) Cooling
–| W| –| (2) Heating
–| W| –| (4) Only sanitary¹
–| W| –| (5) Cooling + Sanitary¹
–| W| –| (6) Heating + Sanitary¹

7201

|

BIT MASK

|

1

|

R/W

|

–

|

Setpoint

| Enablement of writing the machine status remotely| Necessary for the operation of the

reg. 7203/7208.

7203| °C/10| –| R/W| 5.0 ÷ 23.0| Cooling|
7204| °C/10| –| R/W| 25.0 ÷ 55.0-| Heating|
7205| °C/10| –| R/W| 25.0 ÷ 55.0| Santary|
7206| °C/10| –| R/W| 5.0 ÷ 23.0| Second cooling|
7207| °C/10| –| R/W| 25.0 ÷ 55.0| Second heating|
7208| °C/10| –| R/W| 0.0 ÷ 80.0| DHW preparer|

7201

|

BIT MASK

|

2

|

R/W

|

–

|

Second setpoint

| Enabling the switching to the second

setpoint

| Necessary for the operation of bit 0 of

reg. 7202.

7202| BIT MASK| 0| W| –| 0=primary setpoints, 1=secondary

setpoint

| Writing value
7217| BIT MASK| 0| R| –| 0=primary setpoints, 1=secondary

setpoint

| Reading value

7201

|

BIT MASK

|

3

|

R/W

|

–

|

Room temperature

call

|

Enablement of remote room call writing

| Necessary for the operation of bit 1 of

reg. 7202.

7202| BIT MASK| 1| R/W| –| Forced room temperature call remotely|

7201

|

BIT MASK

|

4

|

R/W

|

–

|

Sanitary call

| Enablement of remote sanitary call writing| Necessary for the operation of bit 1 of

reg. 7202.

7202| BIT MASK| 2| R/W| –| Forced remote sanitary mode call|

7201

|

BIT MASK

|

5

|

R/W

|

–

|

Anti-Legionella ²

| Enablement of anti-legionella cycle remotely| Necessary for the operation of bit 3 of

reg. 7202.

7202

|

BIT MASK

|

3

|

R/W

|

–

| Remote anti-legionella cycle request activation| The bit must be 1

for the entire cycle

period.

7216

|

BIT MASK

| 5|

R

|

–

| Anti-legionella cycle in progress|

6

|

Anti-legionella cycle failed or stopped

| It remains at 1 until the next cycle, or it resets itself when the board is turned

off.

7202| BIT MASK| 5| R/W| –| Plant air-vent| Forced plant air-vent| Only if the machine

is in Stand By (0).

Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---

7202

|

BIT MASK

|

6

|

R/W

|

–

|

Santary disablig

|

Sanitary call prohibition (without exiting from the actual mode + SAN function)

| Active only if the setting of bit 3 is 7201 (when the room temp. call is also managed

remotely).

7202| BIT MASK| 7| R/W| –|

Defrosting

| Forced defrosting| Only if the machine

is in heating (2-6).

7214| BIT MASK| 13| R| –| Defrosting on call|
14| Defrosting in progress|
305| ora| –| R| –|

Operating hours

| Compressor 1|
307| ora| –| R| –| Compressor 2|
309| ora| –| R| –| Compressor 3|
313| ora| –| R| –| Compressor 1 circuit 2|
315| ora| –| R| –| Compressor 2 circuit 2|
317| ora| –| R| –| Compressor 3 circuit 2|
253| °C/10| –| R| –|

Temperature trans- ducer

| Evaporation|
254| °C/10| –| R| –| Condensation|
626| °C/10| –| R| –| Evporation circuit 2|
627| °C/10| –| R| –| Condensation circuit2|
400| °C/10| –| R| –|

Temperature ³

| Water inlet|
401| °C/10| –| R| –| Water outlet|
405| °C/10| –| R| –| DHW|
422| °C/10| –| R| –| Compressor inhlation|
428| °C/10| –| R| –| Outdoor|
433| °C/10| –| R| –| Compressor discharge 1|
434| °C/10| –| R| –| Compressor discharge 2|
435| °C/10| –| R| –| Compressor discharge 3|
437| °C/10| –| R| –| Solar collector|
438| °C/10| –| R| –| Solar accumulation|
440| °C/10| –| R| –| Plant remote|
443| °C/10| –| R| –| Radiant panels mixing delivery|
447| °C/10| –| R| –| DHW preparer recirculation|
20422| °C/10| –| R| –| Compressors inhalation (circuit 2)|
20433| °C/10| –| R| –| Compressor 1 discharge (circuit 2)|
20434| °C/10| –| R| –| Compressor 2 discharge (circuit 2)|
20435| °C/10| –| R| –| Compressor 3 discharge (circuit 2)|
406| bar/100| –| R| –|

Pressions ³

| High pressure|
414| bar/100| –| R| –| Low pressure|
20406| bar/100| –| R| –| Circuit 2 high pressure|
20414| bar/100| –| R| –| Circuit 2 low pressure|
7000| %/10| –| R| –|

Analogue output

| Condensation fan|
7001| %/10| –| R| –| Circulating pump|
628| %/10| –| R| –| Condensation fan circuit 2|

950

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| High pressure| E001
1| Low pressure| E002
2| Compressor thermal protection| E003
3| Fan thermal protection| E004
4| Frost| E005
5| Lack of flow| E006
6| DHW preparer low temperature| E007
7| Lack of lubrication| E008
8| High discharge temperature of Cp1| E009
9| Solar collector at high temperature| E010
11| Generic blocking| E012
12| Compressor 2 thermal protection| E013
13| Fan 2 thermal protection| E014
15| Pump thermal protection| E016
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---

951

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Faulty boiler| E017
1| High temperature| E018
2| High discharge temperature of Cp2| E019
3| Inverted pressure transducers| E020
6| Compressor 3 thermal protection| E023
7| Fan 3 thermal protection| E024
8| Outside temperature out of limits| E025
9| Pump 2 thermal protection| E026
10| Generic warning| E040
11| Incongruent temperatures| E041
12| Poor heat exchange DHW| E042
13| DHW accumulation tank in high tem-

perature

| E050
14| I/O module 1 disconnected| E101
15| I/O module 2 disconnected| E102

952

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Probe 1 error| E611
1| Probe 2 error| E621
2| Probe 3 error| E631
3| Probe 4 error| E641
4| Probe 5 error| E651
5| Probe 6 error| E661
6| Probe 7 error| E671
7| Probe 8 error| E681
8| Probe 9 error| E691
9| Probe 10 error| E701
10| Probe 11 error| E711
11| Module 1 probe 1 error| E612
12| Module 1 probe 2 error| E622
13| Module 1 probe 3 error| E632
14| Module 1 probe 4 error| E642
15| Module 1 probe 5 error| E652

953

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Module 1 probe 6 error| E662
1| Module 1 probe 7 error| E672
2| Module 1 probe 8 error| E682
3| Module 1 probe 9 error| E692
4| Module 1 probe 10 error| E702
5| Module 1 probe 11 error| E712
6| Module 2 probe 1 error| E613
7| Module 2 probe 2 error| E623
8| Module 2 probe 3 error| E633
9| Module 2 probe 4 error| E643
10| Module 2 probe 5 error| E653
11| Module 2 probe 6 error| E663
12| Module 2 probe 7 error| E673
13| Module 2 probe 8 error| E683
14| Module 2 probe 9 error| E693
15| Module 2 probe 10 error| E703
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---

954

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Module 2 probe 11 error| E713
1| Link inverter 1| E801
2| Link inverter 2| E802
3| Link inverter 3| E803
4| Hardware fault inverter 1| E851
5| Hardware fault inverter 2| E852
6| Hardware fault inverter 3| E853
7| Overcurrent inverter 1| E861
8| Overcurrent inverter 2| E862
9| Overcurrent inverter 3| E863
10| High temperature inverter 1| E871
11| High temperature inverter 2| E872
12| High temperature inverter 3| E873
13| Bad voltage inverter 1| E881
14| Bad voltage inverter 2| E882
15| Bad voltage inverter 3| E883

955

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Phase sequence inverter 1| E891
1| Phase sequence inverter 2| E892
2| Phase sequence inverter 3| E893
3| Model error inverter 1| E901
4| Model error inverter 2| E902
5| Model error inverter 3| E903
6| Overload error inverter 1| E911
7| Overload error inverter 2| E912
8| Overload error inverter 3| E913
9| Overcurrent PFC inverter 1| E921
10| Overcurrent PFC inverter 2| E922
11| Overcurrent PFC inverter 3| E923
12| Internal communication error inverter 1| E931
13| Internal communication error inverter 2| E932
14| Internal communication error inverter 3| E933
15| Fault PFC inverter 1| E941

956

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| Fault PFC inverter 2| E942
1| Fault PFC inverter 3| E943
2| Probe error inverter 1| E951
3| Probe error inverter 2| E952
4| Probe error inverter 3| E953
5| Abnormal condition inverter 1| E961
6| Abnormal condition inverter 2| E962
7| Abnormal condition inverter 3| E963
8| Inverter 1 EEPROM error| E971
9| Inverter 2 EEPROM error| E972
10| Inverter 3 EEPROM error| E973
11| High discharge temperature of Cp3| E029
12| Anti-legionella performed correctly| E060
13| Anti-legionella failed or stopped| E061

957

|

BIT MASK

| 7|

R

|

–

|

Alarms ⁴ ⁵

| High pressure inverter 1| E981
8| Alta pressione inverter 2| E982
9| Alta pressione inverter 3| E983
10| DC inverter fan motor error 1| E811
11| DC inverter fan motor error 2| E812
12| DC inverter fan motor error 3| E813
13| IPM inverter module overcurrent 1| E821
14| IPM inverter module overcurrent 2| E822
15| IPM inverter module overcurrent 3| E823
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---

958

|

BIT MASK

| 0|

R

|

–

|

Alarms ⁴ ⁵

| PFC inverter module overheating 1| E831
1| PFC inverter module overheating 2| E832
2| PFC inverter module overheating 3| E833
3| DC inverter bus voltage failure 1| E841
4| DC inverter bus voltage failure 2| E842
5| DC inverter bus voltage failure 3| E843

1. if enabled
2.  the cycle is activated only if the DHW (4-5-6) status is terminated by the machine.
3.  if the read value is equal to 32766 the probe is not configured, if 32767 the probe is faulty.
4. reset alarms, write the value 0 with the command 6 on any of the registers of the alarms area.
5.  the alarms of circuit 2 are mapped in the same way with an offset of 20000 (e.g. 20950).
   Restart control, write with command 6 the value -3856 (without sign 61680) to register 200, only with compressor stopped.

ADVANTIX SpA
Via S. Giuseppe Lavoratore 24,
37040 Arcole (VR) Italy
Tel. (+39).045.76.36.585
E-mail: info@advantixspa.it
www.maxa.it

References

• Benvenuto in Maxa Air Conditioning: scopri la nostra gamma prodotti - Maxa

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