**MAXA i-290 0121 Inverter Air Water Heat Pumps with Axial Fans Instructions

**

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

01| 04-08-2023| M.S.| A.B.| Update e-LITE remote control, b01, b02, b07, C01 descriptions
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00| 30-01-2023| M.S.| A.B.| First issued
Rev| Date| Edited| Approved|
Catalogo / Catalogue / Katalog / Catalogue| Serie / Series / Serie / Serie / Série
MCO02060120000.01| CONTROL FOR INVERTER AIR/WATER CHILLERS AND HEAT PUMPS WITH AXIAL FANS
The electrical and electronic products and any waste should not be disposed of with normal household waste, but disposed of ac- cording 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.|
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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.
GRAPHIC SYMBOLS USED IN THE MANUAL

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.

1. PERSONAL PROTECTIVE EQUIPMENT
   Refer to the user-installer manual which accompanies the unit.

2. WORKERS’ HEALTH AND SAFETY
   Refer to the user-installer manual which accompanies the unit.

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.
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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.
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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 up- dates or doubts.
The user is recommended to follow the instructions contained in this booklet, especially those concerning safety and routine maintenance.

USER INTERFACE – CONTROL

Included with each unit is the e-Lite remote keypad.
The following list represents the present icons, and their meaning:

compressor on call. Blue symbol, fixed: compressor On.
| Circulator| White symbol: circulator Off. Blue symbol: circulator On.
| Alarm| List of active alarms.
| ON/OFF| Switches the heat pump on or off.
| Chrono thermostat| Enables or disables the chrono thermostat.
| Defrosting| Steady symbol, if the heat pump is in defrost mode. Flashing symbol, if the heat pump is in defrost call.
| Antifreeze resistance| .The antifreeze resistor is in operation.
| Anti-legionella| Fixed symbol if the heat pump is running the anti- legionella cycle. Flashing symbol if the anti-legionella cycle has not been completed.

Heat pump screen, main control screen.

between main control and e-Lite remote control (in this case, check that the connection is correct)
3| Main menu
4| Heat pump screen
5| DHW screen
6| Thermostat screen
7| Active alarms and forcing
8| Outside temperature
9| Water flow temperature
10| Water inlet temperature
11| Current heat pump status

The possible states of the heat pump are as follows:

“secondary set-point from digital input”).
| Set-point economy enabled by forcing “digital input” (see heat pump MCO, “Secondary set-point from digital input”).

If you tap on the symbol , the operating modes of the heat pump are displayed:

If you tap on the symbol the setpoint setting tab is displayed:

If you tap on the symbol , the mode selection and timing screen is displayed:

If you tap on the season selection switch, the selected season is active for the heat pump and thermostat function.
If you tap the summer programming chrono switch, the chrono programming screen is displayed:

The strip represents the day, which is divided into 48 parts. The duration of each part is 30 minutes. You can change the day with the > and <arrows.
The low blue strip represents the enablement of the cooling mode, with Economy setpoint.
The low blue strip represents the enablement of the cooling mode, with Comfort setpoint.
The low orange strip represents the enabling of the heating mode, with Economy setpoint.
The high red stripe represents the enabling of the heating mode, with Comfort setpoint.
The grey stripe represents disabled mode.
It is possible to scroll left or right, modifying each slightest division, by enabling the following symbols:

Heat pump (water outlet configuration) OFF. By scrolling left and right with the arrows, the water outlet configuration of the heat pump system is disabled.

|

Heat pump (water outlet configuration). By scrolling left and right with the arrows, the water outlet configuration of the system is enabled, in cooling mode with the Comfort set-point.

|

Heat pump (water outlet configuration). Scrolling left and right with the arrows enables the configuration of the system water outlet in cooling mode with the Economy set-point.

|

Heat pump (water outlet configuration). Scrolling left and right with the arrows enables the configuration of the system water outlet in heating mode with the Comfort set-point.

|

Heat pump (water outlet configuration). Scrolling left and right with the arrows, enables the configuration of the system water outlet in heating mode with the Economy set-point.

configuration of the heat pump is set to OFF.
| Heat pump, DHW configuration. Scrolling left and right with the arrows enables the configuration of the system water outlet in cooling mode with the Comfort set-point.
| Heat pump (water outlet configuration).Scrolling left and right with the arrows enables the configuration of the system water outlet in cooling mode with the Economy set-point.

THERMOSTAT DISPLAY

Thermostat function, which uses the e-LITE, internal probe to measure the room temperature. By activating this function, the internal probe will be used to switch the heat pump on or off.
The thermostat call will be sent to the heat pump if:

• The unit is in cooling or heating mode
• The internal temperature probe has not reached the set-point

NOTE:
In the centre of the screen, the temperature measured by the internal probe is displayed. At the bottom right, the current setpoint value is displayed.
SETTING THE ROOM THERMOSTAT SETPOINT
Tapping on the measured temperature displays the setpoint change screen:

Tapping on the gear symbol, the thermostat settings are displayed:

will be sent to the heat pump again, when the room temperature:in heating mode: falls lower than ‘room setpoint – thermostat hyster- esis’.In cooling mode: increases over ‘air setpoint + thermostat hysteresis’.| 0°C / 5°C
Correction of displayed temperature| Correction of temperature detected by internal probe| -5°C / +5°C

OPERATING MODE OF THE THERMOSTAT
On the thermostat’s main screen, tapping on the status symbol in the bottom left-hand corner displays the thermostat’s operating modes:

• Switches to thermostat comfort setpoint, manual mode
• Displayed if the chrono thermostat is active and in comfort mode

| Economy Setpoint|

• Switches to thermostat economy setpoint, manual mode
• Displayed if the chrono thermostat is active and in economy mode

Tapping on the symbol , the operating season and the thermostat timer are displayed:

The strip represents the day, which is divided into 48 parts. The duration of each part is 30 minutes. It is possible to change the day with the > and < arrows.
The low blue stripe represents cooling operation, Economy setpoint.
The low blue stripe represents cooling operation, setpoint Comfort.
The low orange stripe represents heating operation, Economy setpoint.
The low red stripe represents heating operation, setpoint Comfort.
Grey stripe, represents disabled mode.
The “copy symbol” , allows to select the days of the week, where we want to have the same program as the day shown.
Scrolling to the left and right, you can edit each smallest division, enabling the following symbols:

the arrows, the water outlet configuration of the heat pump system is disabled.
| Heat pump (water outlet configuration). Scrolling left and right with the arrows, the water outlet configuration of the system is enabled, in cooling mode with the Comfort set-point.
| Heat pump (water outlet configuration). Scrolling left and right with the arrows enables the water outlet configuration of the system, in cooling mode with the Economy set-point.
| Heat pump (water outlet configuration). Scrolling left and right with the arrows enables the configuration of the system water outlet in heating mode with the Comfort set-point.
| Heat pump (water outlet configuration). Scrolling left and right with the arrows enables the configuration of the system water outlet in heating mode with the Economy set-point.

MENU

From the main screen, tapping on the menu symbol (bottom left) displays the main menu:

1. DIAGNOSTICS
   In this area, input and output values and heat pump counters are displayed.
   NOTE:
   The firmware version of the main control board and the e-Lite can also be found here.

2. ALARMS
   List of active alarms.
   Tapping on the reset symbol , will reset all alarms that are no longer active.

3. ALARM HISTORY
   Alarm history, with date and time of alarm occurrence and stop.

4. HEAT PUMP SERIAL NUMBER
   Heat pump serial number.

5. GENERAL SETTINGS • Date and time

   • Language
   • Day brightness: Brightness Day: percentage of display brightness while using the e-LITE.
   • Night Brightness: percentage of display brightness when the e-LITE is in stand-by mode.
   • ouch-screen sound: enable or disable tap sound.

6. INSTALLER MENU
   This menu provides access to heat pump configurations and functions.
   This menu provides access to heat pump configurations and functions.
   User password: 0000.
   Depending on the password level entered, different menus are displayed.

7. UNIT SETTINGS
   The parameters displayed depend on the password set:
   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
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Local water set-points (in cooling and heating, eco and normal). When the e-LITE remote control is connected tothe heat pump, reference is not made to these set-points, but to those onpage|

Set

|

User

|

—

Configuration| CnF| H01-| Installer
Compressor| CP| C01-| Installer
Alarms| ALL| A01-| Installer
Adjustment| rE| b01-| Installer
Pump| PUP| P01-| Installer
Electrical heaters| Fro| r01-| Installer
Defrosting| dFr| d01-| Installer
Hz min / max| LbH| L0-| Installer
*Solar*| SUn| S01-| Installer
Mixing valve**| rAD| i01-| Installer

The PSS menu is accessed to enter the maintainer password and to enable higher privilege access. Once entered, the duration of the password
is one hour, or until the control is switched off.
FORCING
This menu is protected by an installer password.

• Remote panel alarm history reset: resets the e-LITE alarm history

• Main control alarm history reset: resets the main control alarm history

• Reboot main control: restarts the main control of the heat pump (only enabled if the heat pump is in stand-by)

• Defrost: forces a manual defrost (see conditions to enable defrost, in heat pump MCO)

• Venting system: activation of the circulator to force venting of the system. With a tap, the function is activated. With the function active, a new tap on it disables it. Note that the command is only accepted if the heat pump is in the OFF state. The heat pump suspends this function
  if the operating mode changes from OFF to another mode, even if the function time has not expired.

• Circulator forcing: This function is used to manually force the circulation circulator to run at 100% for 1 hour. A tap on this function will activate it. With the function active, a new tap on it disables it. Note that this command is only accepted if the heat pump is in the OFF state. The heat pump will suspend this function if the operating mode is changed from OFF to another mode, even if the function time has not expired.

• Forcing solar circulator: This function is used to manually enable the solar circulator. A tap on this function will enable it. With the function active, a new tap on it disables it. Note that this command is only accepted if the heat pump is in the OFF state. The heat pump will suspend this function if the operating mode is changed from OFF to another mode, even if the function time has not expired.

NOTE:
The main screen will be displayed when a forcing is activated.
HEAT PUMP UPDATE
This menu is protected by an installer password.

• FW UPDATE: Main control board firmware update
• PARAMETERS UPDATE: Main control board parameter update
• PARAMETERS EXPORT: exports parameters and alarm history of main control.
• PROGRESS: progress status.

e-Lite INSTALLATION

The control is intended to be installed on a wall or placed on a flat surface. The panel cannot be used under conditions of water vapour conden- sation and must be protected against water. It must be installed at a height that allows it to be used comfortably, typically 1.5 metres above the floor.
In order to reduce the interference of temperature measurement by the control panel, avoid sunny places with poor air circulation, close to heating devices and placed directly at doors and windows (generally at least 200 mm from the edge of the door).

The control panel must be installed according to the instructions below.
Disconnect the installation frame (1) from the back of the room ther- mostat housing (2). The frame is secured to the panel housing with latches. Use a flat screwdriver to detach the frame.

Using a sharp tool, cut holes in four places in the cover (3) for the screw terminals.

Connect the wires of a transmission cable, connecting the control panel with the heat pump, to the screw terminal (4) as described on the plate (5). The control panel of the cable connection with the heat pump can be recessed in the wall or can slide on its surface – in this case the cable must be additionally positioned in the cable channel (6) of the instal- lation frame. The cable connection panel with the heat pump may not be routed together with the building network cables. The cable must not be routed close to devices that emit a strong electromagnetic field.

Drill the holes in the wall and use screws (max. Ø 3 mm) to fix the instal- lation frame at the selected location on the wall.
The distance of the holes can be determined by positioning the frame on the wall. Then fix the panel to the installation frame using the clips.

Use a dedicated stand to place the control panel on a flat surface.

e-Lite CONNECTIONS

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

• 5X1mm2 twisted and shielded cable for Modbus communication D+/D-, PE, and 12Vdc power supply, which is included in the box.

NB: The shield of the cable must be connected to PE in both of its ends.

DESCRIPTION| e-LITE TERMINALS| CHILLER/HEAT PUMP TERMINALS (see documentation relating to the heat pump)| 12Vdc POWER SUPPLY| NOTES
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POWER SUPPLY| VCC| | SEC, red, +|

SHIELDED AND TWISTED CABLE

GND| | SEC, black, –
COMMUNICATION| D+| 1A (i-290)|
D-| 1B (i-290)|
SHIELDING| | PE clamp of the User terminal block|

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| Primary channel Modbus RTU + remote keyboard signal connection|

Modbus communication for remote keyboard i-CRFor signal use shielded twisted pair cable 3 x0.75 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| Primary channel Modbus RTU – remote keyboard signal connection
1C| Primary channel Modbus GND remote keyboard signal connection
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| Secondary channel Modbus RTU + signal connection GI3 module orremote 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 beconnected at the same time.
2B| Secondary channel Modbus RTU – signal connection GI3 module orremote supervision
2C| Secondary channel Modbus GND signal connection GI3 module orremote supervision
ID2| Remote summer/winter mode change input(to activate the function see relevant section in the MCO manual)| Voltage-free digital input
TERMINAL BLOCK| **CONNECTION**| **TYPE**
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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 func- tion, 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:

SETTINGS FOR STANDARD CLIMATIC CURVES

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)

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.

CONTINUOUS OPERATION [P03=0] – Default
The circulator is only off with the unit OFF, in all other cases it is always on.

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.

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.
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 = 95%
• 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.

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 ON/OFF LOGIC

The restart of compressors is in operation of a set point referred 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.

By thermoregulation we mean the temperature control performed by the generator in order to guarantee the temperature strictly necessary to the system, reducing electricity consumption and achieving better indoor comfort.
The heat pump is supplied with a modulating control system based on the fluid outlet temperature, variable-speed compressors are able to adapt to the load variation, and reduce the fluctuations that would occur with an on/off system.

Modulating control systems can be:

• proportional
• proportional integrals

is the least complex control mode because it adjusts the capacity based on the difference between the actual control temperature and the target temperature (set point).

The temperature range within which the variation is activated to achieve the comfort temperature is defined as the ‘proportional band’ and represents the working range of the heat pump.
Parameters b01 and b02 are defined:

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;

• b24 = cut-on hysteresis limitation;

• b25 = delta cut-on compressor set= 2°C.

• The compressor shutdown: the compressor shutdown when Tw,out < Tw,out,set
  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 8°), the compressors restart when: Tw,out > (Tw,out,set + b24 + b25).

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;

• b25 = compressor regulation delta cut-on = 2°C

• The compressor shutdown: the compressor shutdown when is regulated by parameter b05 Tw,out > Tw,out,set

• 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 8°), the compressors restart when: Tw,out < (Tw,out,set – b24 – b25).

As can be deduced from the graphs above, the higher the band (higher b01 or b02 values, dotted lines in the graph), the lower the frequency at the same water outlet temperature (Hz1>Hz2).

The variables for deciding the correct proportional band value are:

• water content dedicated to the unit only
• type of terminals.

It is recommended to vary these values during start-up by considering a minimum value of 1 and a maximum of 4 °C.

Proportional Integral Method – PI:

With a value of b07≠0 (Integral Time), this type of adjustment is much more accurate than the proportional one because it enables further reduce oscillations through continuous evaluation of the deviation.

The PI control provides a value from 0 to 100 % corresponding to the minimum and maximum possible frequency thanks to a constant scan that photographs the deviation between the actual measured temperature and the target temperature.

The error in cooling and heating mode will be calculated in this way, respectively: – ɛf = Tmis – Set point (Error in cold or chiller mode)

• ɛc = Set point- Tmis (Error in heat or heat pump mode)

If the measured error is positive then there will be a variation otherwise, if negative, the frequency will not vary.
The two components (PI) work in synergy:

• ɛ unchanged: no change in power
• ɛ increasing: power increases due to the proportional component
• ɛ decreasing: power decreases due to the effect of the proportional component

The contribution of this component is directly proportional to the calculated error and inversely proportional to the value of the control band.

For the same calculated error, the higher the set band, the lower the percentage of action, while for the same band, the higher the calculated error, the higher the percentage of action.

The calculated error, the higher the percentage of action.

For a better understanding of what is described, see the graphs below.

Pl value with variable b01 and constant error

|

Pl value with constant b01 and variable error

---|---

The contribution of this component is added to the power demand at each scan as a function of the integral time inversely proportional to the integral time b07:

N.B. if the power required is 100% or 0% there is no additional contribution or decrease.

The use of this regulation can be advantageous if the load variation is progressive without sudden variations because it would deliver more accurately the actual output of the heat pump in relation to the actual demand, whereas a only proportional component (b07=0) would be rec- ommended for systems where the power demand variation is for a short period of time.
During commissioning, it must be considered whether it is more effective to work with a P or PI control in operation:

• water content dedicated to the unit only
• type of terminals
• of the load variation during start-up

The choice of regulation is fundamental to optimize the efficiency of the system and to reduce the number of starts/hour in order to achieve the correct thermodynamic balance and the correct lubrication of the mechanical parts in the compressor, it is recommended to choose them in order to have a continuous operation of the heat pump of at least 10 minutes. The heat pump control regulates the maximum number of starts per hour via parameter C02 (which cannot be changed and is fixed by the manufacturer) in order to preserve the integrity of the compressor over time, but if necessary during the commissioning phase you can choose to delay the next start-up using parameter C01:|
---|---

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.
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 switched “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.

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 ma- chine activates the DHW valve and the compressor is set at maximum frequency, starting modulation one degree before the setting and switch- ing 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.

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

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.

INSUFFICIENT HEAT EXCHANGE IN A DHW SYSTEM

During DHW production, if the heat pump flow probe detects a temperature higher than 78°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 re- quires 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 is met (and any offset). The compressor restarts when the flow temperature of the heat pump falls below 75°C again and the temperature measured by the DHW probe is lower than Tsan,set – 4°C.

REMOTE-CONTROLLED FUNCTIONS Not all of the configurations can be activated and/or modified at the same time. The terminal block has digital inputs to control the unit via an external consent.
15.3.1        ON/OFF

The function is enabled by default on digital input ID 3 (terminals X15.1/X15.2).
Remove the terminal block jumper to place the unit in standby (the text “ E00 ” appears on the controller display). When the contact closes, the machine comes out of standby and the circulator switches on for 2 minutes.
Function enabled by default (Parameter H47=2 ).

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.
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.

Ready 1 call not active
ID9 active via H53| 23| Closed contact -> SG Ready 2 callOpen contact -> SG Ready 2 call not active
b31| 2°C| System Setpoint Offset for Smart Grid
b32| 2°C| Sanitary Setpoint Offset for Smart Grid

The following table summarises the four operating states, relating to the status of the two digital inputs configured with the SG Ready function:

External signal| ID2 (SG1)| ID9 (SG2)| Description
---|---|---|---
1:0| Closed| Open| OFF commandThe heat pump remains forced to a shutdown condition, with the only exception of defrosting in progress; in this case, it waits until defrosting is complete before activating the function. The control board, in this phase, performsas if the thermoregulation status was satisfied.
0:0| Open| Open| Normal operation

0:1

|

Open

|

Closed

| ON commandIn this state, the heat pump increases the set-point by an offset defined by parameters b31, b32.The logic differs in two cases, with or without configuration of the ‘room call’ device (with enabling of a related digital input, Room Thermostat).a. Configuration without ‘room call’ deviceWhen the external input 0:1 occurs and the compressor is on, the control logic instantaneously applies the offset; When the external input 0:1 occurs and the compressor is off the control logic does not instantaneously apply the offset but waits for the compressor to activate the offset.Configuration with ‘room call’ device:b.  When external input 0:1 occurs and there is an active ‘room call’, the control logic instantaneously applies the offset; when external input 0:1 occurs and there is no active ‘room call’, the control logic does not instantaneouslyapply the offset but waits for the ‘room call’ to be activated and only then applies the offset.
External signal| ID2 (SG1)| ID9 (SG2)| Description
---|---|---|---
1:1| Closed| Closed| Force ON command Compared to the previous case, the heat pump forces ON immediately by increasing the set-point of an offset defined by parameters b31, b32, with the distinction of the following two cases:a. Configuration without ‘room call’ deviceWhen the external 1:1 input occurs, the control logic instantly applies heat offsets and/or san offsets, whether the compressor is on or off;b.  Configuration with ‘room call’ deviceWhen the external 1:1 input occurs, the control logic instantaneously applies heat offsets and/or sanitary offsets, whether there is an active room call or not; this means that the control logic immediately forces the set point toincrease by a value equal to the offset, regardless of the room call status or regardless of the compressor status.

The following control logic applies to both conditions ‘Command ON-external input 0:1’ and ‘Command FORCE ON-external input 1:1’:
a. If both offsets are enabled (Heating offset + Sanitary offset), the control logic does not apply the offset on the sanitary set instantaneously but only when the heating operation mode is satisfied.
b. If the pdc is operating in DHW mode, the DHW offset is not applied instantaneously but the DHW set-point is satisfied first. It then returns to heating mode by applying the heating set-point+offset and only then applies the offset on the DHW set-point (DHW set-point+offset).
c. If the machine is thermoregulating using the “second set-point” function the offset on the system set-point is not applied.
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.
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.
MACHINE BLOCK
Configured by default, a voltage output signaling the presence of an alarm.

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.

15.5.2.1        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.

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.

DHW HEATER
Function which can be activated instead of managing the plant heaterThis 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).

Note : The domestic hot water function must be enabled (see paragraph 10.2)

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.

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:
   • r20=0 , priority to the plant (the DHW heater only switches on if the temperature control for the plant side heater is fulfilled);
   • r20=1 , priority to DHW (the plant side heater only switches on if the temperature control for the sanitary side heater is fulfilled).

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 ).

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);
• 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);

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.

ACTIVATION OF INTEGRATION HEATERS AND BOILER IN JOINT OPERATION AND IN SUB- STITUTION 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

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.

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.

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.

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
• 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

The compressor switches back on if the temperature rises above r08 + r09 (°C) (r09=1.0 °C by default).

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 op- erating 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 ”/”).

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

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.

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.

ALARMA
voltage output can be configured to signal the presence of an alarm.

DEFROSTA
digital output can be configured signaling defrosting in progress.

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 itse lf.
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.
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.
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 withparameter 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

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.

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

Unit| Water measuring range [L/min]| Flow speed [m/s]| Power supply [Vdc]| Current consumption without load| DN
---|---|---|---|---|---
01060109| 3.5 – 50| 0,290 – 4,145| 4,75 – 33| <5mA| 15
Unit| Water measuring range [L/min]| Flow speed [m/s]| Power supply [Vdc]| Current consumption without load| DN
---|---|---|---|---|---
011201150118| 5,0 – 85| 0,265 – 4,509| 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 centralized 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

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

FUNCTIONS THAT CAN BE ACTIVATED WITH GI3 MODULE (OPTIONAL)

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

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

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| 1.1 / 1.2| 0| Not set| Analogue input configurable with anNTC-10kΏ probe at 25°C β 3435
ST 6E| H28| 2.1 / 2.2| 0| Not set| Analogue input configurable with anNTC-10kΏ probe at 25°C β 3435
ST 7E| H29| 3.1 / 3.2| 0| Not set| Analogue input configurable with anNTC-10kΏ probe at 25°C β 3435
ID 9E| H63| 4.1 / 4.2| 0| Not set| Voltage-free digital input
DO 1E| H86| 1.1 (phase)2.2 (neutral)| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phaselive output.
DO 2E| H87| 2.1  (phase)2.2  (neutral)| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phaselive output.
DO 3E| H88| 7.1 (phase)7.2(neutral)| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phaselive output.
DO 4E| H89| 8.1 (phase)8.2(neutral)| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phaselive output.
DO 5E| H90| 9.1 (phase)9.2(neutral)| 0| Not set| 230Vac, 50Hz, 2A (AC1) single-phase live output.

GI terminal block

MANAGEMENT OF SECONDARY CIRCULATOR/RELAUNCH PUMP (WITH ROOM THER- MOSTAT)

It allows the management of a secondary or booster circulator to serve the plant. A room thermostat (N.C.) must be configured appropriately.

• Thermostat closed contact -> The secondary circulator is activated;
• Thermostat open contact -> The secondary circulator is off with a delay given by P02 (post-pumping).

9.2(neutral)

The temperature control of the Heat pump is independent from the thermostat call.
When the Heat pump is Off, the booster circulator will be off regardless of the thermostat call.

MANAGEMENT OF SECONDARY CIRCULATOR/RELAUNCH PUMP (WITH ROOM THER- MOSTAT)

It allows the management of a secondary or booster circulator to serve the plant. A room thermostat (N.C.) must be configured appropriately.

• Thermostat closed contact -> The secondary circulator is activated;
• Thermostat open contact -> The secondary circulator is off with a delay given by P02 (post-pumping).

9.2(neutral)

The temperature control of the Heat pump is independent from the thermostat call.

When the Heat pump is Off, the booster circulator will be off regardless of the thermostat call.

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: Coo = Mixer flow temperature setpoint in cooling mode = 15°C (default) Hea = 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| XGI terminals
---|---|---|---|---
ST 5E can be activated viaH27| Analogue input| 44| Mixer probe| 1.1 / 1.2
ID9E can be activated viaH63| Digital input| 19| Room thermostat| 4.1 / 4.2
DO1E can be activated viaH86| Voltage output| 34| Valve open command| 5.1 (phase) /6.2(neutral)
DO2E can be activated viaH87| Voltage output| 35| Valve close command| 5.2 (phase)
DO3E can be activated viH88| Voltage output| 33| Mixer pump| 7.1 / 7.2
i01| Valve opening time| Recover the value fromthe technical data suppliedinstalled| |
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 inheating mode| 1| |
Mixer management only active incooling mode| 2| |
Mixer management only active inheating and cooling mode| 3| |

1. Recommended value. Time interval between one corretion and the next.
2. Recommended value. Intervention area defined by the difference between the setpoint for the mixer flow and the temperature measured by mixing flow probe.
3. Recommended 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.
   Derivate component of regulation; use only if you have a good knowledge of regulator logic.

Determination of setpoint

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| XGI terminals
---|---|---|---|---
ST 5E can be activated viaH27| Analogue input| 44| Mixer probe| 1.1 / 1.2
ID9E can be activated viaH63| Digital input| 19| Room thermostat| 4.1 / 4.2
DO1E can be activated viaH86| Voltage output| 34| Valve open command| 5.1 (phase) /6.2(neutral)
DO2E can be activated viaH87| Voltage output| 35| Valve close command| 5.2 (phase)
DO3E can be activated viH88| 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 inheating and cooling mode| 3| |

1. Recommended value. Time interval between one correction and the next.
2. Recommended value. Intervention area defined by the difference between the setpoint for the mixer flow and the temperature measured by mixing flow probe.
3. Recommended 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.

Determination of setpoint
The setpoint on which to perform regulation is given by r COO or r HEA 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.
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.
SOLAR INTEGRATION MANAGEMENT
To enable te function, set S01=1.

Parameter| Description| Value| Function| XGI terminals
---|---|---|---|---
ST6E can be activated viaH28| Analogue input| 39| Solar storage tank probe| 2.1 / 2.2
ST7E can be activated viaH29| Analogue input| 38| Solar collector probe| 2.1 / 2.2
DO3E can be activated viaH88| Live output| 30| Solar circulator| 7.1 (phase) 7.2(neutral)
DO4E can be activated viaH89| Live output| 45| Solar exhaust valve| 8.1 (phase) 8.2(neutral)

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).

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.

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.

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.

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.

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.

Antifreeze Function active if the parameter S01 = 1.
If the temperature of the solar collector 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 jeopardies 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 autho- rised 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.

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 functionactive. 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 accessorypresent
rHEA| Mixing valve winter setpoint| °C| 30.0| -50÷80| I| | Config if Gi accessorypresent
San2| Second sanitary setpoint| °C| 45.0| 0÷80| l| |
H01| Maximum heating setpoint| °C| 60.0| -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 configurationAnalogue ST6| /| 0| 0÷49| I| 0 = Input disabled6 = Domestic hot water probe|
H18| Input configuration Analogue ST7| /| 0| 0÷49| I| 0 = Input disabled41 = Remote water temperatureprobe|
H22| 0-10vDC live input configu- rationAnalogue ST11| /| 0| 0÷49| I| 0 = Input disabled40 = Plant setpoint decalibration|
H27| Input configurationAnalogue ST5E| /| 0| 0÷49| I| 0 = Input disabled44 = Mixer probe| Only if  Gi  accessorypresent
H28| Input configurationAnalogue ST6E| /| 0| 0÷49| I| 0 = Input disabled39 = Solar storage tank probe| Only if  Gi  accessorypresent
H29| Input configurationAnalogue ST7E| /| 0| 0÷49| I| 0 = Input disabled38 = Solar collector probe| Only if  Gi  accessorypresent
H30| Input configurationAnalogue ST8E| /| 0| 0÷49| l| | Only if  Gi accessorypresent
H46| Input configurationDigital ID2| /| 0| 0÷30| I| 0 = Input disabled3 = Summer/winter mode change|
H47| Input configurationDigital ID3| /| 2| 0÷30| I| 0 = Input disabled2 = Remote On / Off|
H53| Input configuration Digital ID9| /| 0| 0÷30| I| 0 = Input disabled21= Hz min/max remote 25= Silenced version26 = Double set-point call28 = DHW thermostat call|
H60| Input configuration DigitalID6E| /| 0| 0÷30| l| | Only if  Gi accessorypresent
H61| Input configuration DigitalID7E| /| 0| 0÷30| l| | Only if  Gi accessorypresent
H62| Input configuration DigitalID8E| /| 0| 0÷30| l| | Only if  Gi accessorypresent
H63**| Input configurationDigital ID9E| /| 0| 0÷30| I| 0 = Input disabled19 = room thermostat| Only if  Gi  accessorypresent

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 inverted128 = ID8 polarity inverted|

H76

|

Digital inputs polarity

|

/

|

0

|

0÷255

|

I

| 0 = Digital inputs N.A.1 = ID9 polarity inverted 2 = ID10 polarity inverted4 = ID1E1 polarity inverted 8 = ID2E1 polarity inverted 16 = ID3E1 polarity inverted 32 = ID4E1 polarity inverted 64 = ID5E1 polarity inverted128 = ID6E1 polarity inverted|
H81| Output configuration In DO3 power| /| 22| 0÷48| I| 0 = Output disabled22 = Plant integration heater26 = DHW integration heater|
H82| Output configurationIn DO4 power| /| 14| 0÷48| | 0 = Output disabled= Resistenza scambiatore|
H83| Output configurationIn DO5 power| /| 28| 0÷48| | 0 = Output disabled= Base resistance|
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
H84| Output configurationIn DO6 power| /| 6| 0÷48| I| 0 = Output disabled6 = DHW valve|

H85

|

Output configuration In DO7 power

|

/

|

25

|

0÷48

|

l

| 0 = Output disabled25 = Double set-point valve 29 = Boiler enabling24 = Alarm warning31 = Summer/winter operating mode warning21 = Defrost warning47 = Machine block warning|
*H86*| Output configurationIn voltage DO1E| /| 0| 0÷48| I| 0= Output disabled34= Valve opening command| Only if  Gi  accessorypresent
H87| Output configurationIn voltage DO2E| /| 0| 0÷48| I| 0= Output disabled35= Valve closing command| Only if  Gi  accessorypresent
H88| Output configurationIn voltage DO3E| /| 0| 0÷48| l| 0 = Output disabled30 = Solar circulator| Only if  Gi  accessorypresent
H89**| Output configurationIn voltage DO4E| /| 0| 0÷48| l| 0 = Output disabled45 = Solar exhaust valve| Only if  Gi  accessorypresent
*H90| Output configurationIn voltage DO5E| /| 0| 0÷48| l| 0 = Output disabled43 = Secondary circulator| Only if  Gi  accessorypresent

H100

|

Digital output polarity

|

/

|

2

|

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 DO416 = Reversed polarity of DO5 32 = Reversed polarity of DO6 64 = Reversed polarity of DO7128 = 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 DO6E32 = 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 baud1=9600 baud2=19200 baud3=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 bit3=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 operation1 = In Heating, machine alwaysturned towards DHW|
H136| OFF state deactivation with ID presence ON/OFF re-mote| /| 0| 0÷1| l| |
H138| Enabling second set pointfor DHW| /| 0| 0÷4| I| |
H141| Priority        communicationchannels 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 Baud1 = 9’600 Baud2 = 19’200 Baud3 = 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 Bit3 = No parity, 1 Stop Bit|
H144| Serial address for MODBUS| /| 0| 0÷127| I| 0 = same address as Serial Mocbus1 (H126)|
A08| Antifreeze alarm activationsetting| °C| 3| -127÷127| l| Different values   can   jeopardiseproper operation of the unit|
b01| Compressor         regulationband in cold| °C| 2| 0,5÷5,0| l| |
b02| Compressor         regulationband in hot| °C| 2| 0,5÷5,0| l| |
b04| Radiant panels valve switch-ing time| sec| 30| 0÷600| l| Different values   can   jeopardiseproper operation of the unit|
b06| Sanitary valve stroke time| sec| 45| 0÷255| I| |
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
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÷10.0| I| |
b21| System    water     reversingvalve switching time| sec| 0| 0÷600| l| |
b22| Plant probe   temperaturecontrol cut-off hysteresis| °C| 5.0| 0.0÷25.5| I| |
b24| Maximum ∆T,set for com-pressors restart| °C| 8.0| 0.0÷25.5| l| |
b25| Compressor cut-on hyster-esis| °C| 2.0| 0.0÷25.5| l| |
b30| Enabling                          compressor switch-off with room callsatisfied| –| 0| 0÷1| l| 0 = function disable 1 = function active|
P01| Pump ON compressor ONdelay| sec| 30| 0÷255| I| |
P02| Pump OFF compressor OFFdelay| min| 2.0| 0÷25.5| I| |
P03| Pump operating mode| /| 0| 0÷1| I| | The pump is always on if the antifreezeheaters 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 inheating| °C| 4°C| 0÷255| l| |
P07| Maximum pump speed| �| 95%| 65÷95| l| |
P08| Minimum pump speed| %| 75%| 50÷95| 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 pumpin 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 ourheadquarters.
r03| Antifreeze heaters setpoint in cooling mode| °C| 4| 3÷6| I| | Only change in the presence of glycol water. Contact ourheadquarters.
r06| Antifreeze heaters delta| °C| 2.0| 0.0÷25.5| I| | Only change in the presence of glycol water. Contact ourheadquarters.
r08| Operation in   substitutionupper limit| °C| -20| -20÷50| I| Respect r22 ≥ r28 ≥ r08| Do not modify this value, as it could jeopardise operationof the unit
r09| Hysteresis for heat pumpblockage| °C| 1,0| 0,0 ÷10,0| | |
r10| Plant integration enabling| /| 0| 0÷1| I| 0 = Function disabled1 = Function enabled|
r11| Plant    integration  heaterdelta| °C| 0.5| 0,0÷25.5| I| |
r12| Plant/heat   pump   integra-tion heater activation delay| min| 10| 0÷255| I| |
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 disabled1 = Function enabled|
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
r16| DHW/heat   pump   integra-tion heater activation delay| min| 15| 0÷255| I| |
r19| Duration of tray heater ac- tivationsince last defrost| min| 10| 0÷255| I| 0= heater activation regardless of defrost.|
r21| Enables plant side mitiga- tionwith   heaters    in    defrostmode| /| 0| 0÷1| I| 0= Function disabled1= 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 operationof the unit
r23| Type of use of boiler| /| 6| 0÷6| I| |
r24| Type of use of integrationheaters| /| 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 IIupper limit| °C| -7| -16÷50| I| Respect r22 ≥ r28 ≥ r08| Do not modify this value, as it could jeopardise operationof the unit
r29| First setpoint temperature offset for  boiler and plantheaters (HEA)| °C| 0| 0÷100| I| |
r30| Second setpoint tempera- ture offset for boiler andplant 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| /| 1| 0÷3| I| |
r33| Pump management   withheaters active| /| 3| 0÷3| I| |

r34

|

Disinfection day

|

/

|

0

|

0÷7

|

U

| 0 = Disabled1 = Monday2 = Tuesday3 = Wednesday4 = Thurday5 = Friday6 = Saturday7 = Sunday|
r35| Disinfection time (minute ofthe day)| /| 0| 0÷1439| U| |

r36

|

Anti-loop time on sanitary operation

|

min

|

1

|

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 ofsanitary production.
r37| Boiler operation in cooling + DHW mode| /| 1| 0÷2| l| 0 = Boiler not used1 = Boiler used in integration2 = Boiler does DHW and PDC doesplant.|
r38| Heat pump blockage thresh-old for high T| °C| 46| -127÷127| l| |
r39| Heat pump blockage thresh-old for high Text in heat| °C| 46| -127÷127| l| |
b24| Maximum compressor cut-on delta| °C| 8| 0÷25,5| | |
b24| Compressor cut-on delta| °C| 2| 2,0÷25,5| | |
Parame- ter| Description| Unit| Default| Range| Visibility| Allowed configurations:|
---|---|---|---|---|---|---|---
Description| Notes
d04| Defrost output pressure| bar| 24.0| -500÷800| l| |
d08| Minimum time between de-frost and next| min| 35| 0÷255| l| |
L02| User enablement for min./max. Hz function| /| 0| 0÷1| I| |
L03| Active min./max. Hz| /| 0| 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 maximumsolar temperature| sec| 0| 0÷255| l| |
s06| Pump off time in max. solartemp| 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 alarmthreshold| °C| 0| 0÷255| l| |
s13| Minimum        temperaturethreshold 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        temperaturethresold     collector     anti-freeze storage| °C| 0| 0÷255| l| |
L02| User enablement for min./max. Hz function| /| 0| 0÷1| I| |
L03| Active min./max. Hz| /| 0| 0÷7| I| |
*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| |
Ac09**| Flow-meter minimum waterflow rate| l/min| 0.0| 0÷100| l|

See par. “Flowmeter”

|
Ac10| Flowmeter outlet   at   theminium flow rate| Volt| 0.0| 0÷100| l|
Ac11| Maximum flowmeter flowrate (0106, 0109)| l/min| 50.0| 0÷800| l|
Maximum flowmeter flowrate (0112, 0115,0118)| 85.0| 0÷800
Ac12| Flow meter outlet at themaximum flow rate| Volt| 0.0| 0÷100| l|

(*) If Gi module is present

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.

[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 by- passed 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

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.

[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.

[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.

[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.

[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.

[E851 ÷E971] INVERTER

The inverter has its own list of alarms.

[E00] REMOTE ON/OFF (WARNING)

If the unit is controlled by a remote digital input. See par. 10.4.1

[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.

[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.

[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.

[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.

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

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:

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

Modbus commands:

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 themachine 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 secondsetpoint| Necessary for the operation of bit 0 ofreg. 7202.
7202| BIT MASK| 0| W| –| 0=primary setpoints, 1=secondarysetpoint| Writing value
7217| BIT MASK| 0| R| –| 0=primary setpoints, 1=secondarysetpoint| Reading value
7201| BIT MASK| 3| R/W| –| Room temperaturecall| Enablement of remote room call writing| Necessary for the operation of bit 1 ofreg. 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 ofreg. 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 ofreg. 7202.
7202| BIT MASK| 3| R/W| –| Remote anti-legionella cycle request activation| The bit must be 1for the entire cycleperiod.
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 theboard is turned off.
7202| BIT MASK| 5| R/W| –| Plant air-vent| Forced plant air-vent| Only if the machineis in Stand By (0).
7202| BIT MASK| 6| R/W| –| Santary disablig| Sanitary call prohibition (without exiting from the actual mode + SAN function)| Active only if the set- ting of bit 3 is 7201 (when the room temp. call is alsomanaged remotely).
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---
7202| BIT MASK| 7| R/W| –| Defrosting| Forced defrosting| Only if the machineis in heating (2-6).
7214| BIT MASK| 13| R| –| Defrosting on call|
14| Defrosting in progress|
8000| kW/100| –| R| –|

Power ⁶

| Thermal power output| Estimated value in the absence of a flowmeter
8001| kW/100| –| R| –| Compressor power consumption|
8002| kW/100| –| R| –| Circulator power consumption|
8003| kW/100| –| R| –| Fan power consumption|
8004| kW/100| –| R| –| Total power consumption|
8005| kWh/10| –| R| –|

Energy ⁶

| Energy consumed yesterday in cooling| Values present only with heat pump combined with i-CR, e-LITE or Hi-T2 con-trollers
8006| kWh| | R| | Energy consumed last month in cooling|
8007| kWh10| | R| | Energy consumed last year in cooling|
8008| kWh/10| | R| | Energy yielded yesterday in cooling|
8009| kWh| | R| | Energy yielded last month in cooling|
8010| kWh10| | R| | Energy yielded last year in cooling|
8011| kWh/10| –| R| –| Energy consumed yesterday in heating|
8012| kWh| | R| | Energy consumed last month in heating|
8013| kWh10| | R| | Energy consumed last year in heating|
8014| kWh/10| | R| | Energy yielded yesterday in heating|
8015| kWh| | R| | Energy yielded last month in heating|
8016| kWh10| | R| | Energy yielded last year in heating|

239

| BYTE (H)| –| R| –|

SG-Ready

| (0) Smart grid management not active|
BYTE (H)| –| R| –| (1) Smart grid logics enabled|
BYTE (L)| –| R| –| (0) SG-00|
BYTE (L)| –| R| –| (1) SG-01|
BYTE (L)| –| R| –| (2) SG-10|
BYTE (L)| –| R| –| (3) SG-11|
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)|
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---
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
12| Compressor 2 thermal protection| E013
13| Fan 2 thermal protection| E014
15| Pump thermal protection| E016

951

|

BIT MASK

| 1|

R

|

–

|

Alarms ⁴ ⁵

| 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
9| Pump 2 thermal protection| E026
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
Register| Format| Bit| R/W| Range| Name| Description| Note
---|---|---|---|---|---|---|---

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

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

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

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).
6. function present on FW with revision 023 and later, up to size 32kW
   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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