Danfoss AK-CC55 Single Coil Case Contr Installation Guide

Danfoss AK-CC55 Single Coil Case Contr

Product Information

Specifications

• Model: AK-CC55 Single Coil
• Manufacturer: Danfoss
• Coil Voltage: 230 V or 115 V AC
• Max. Current: 0.5 A
• Compatibility: EKC 204A, AK-CC 210, AK-CC 250, AK-CC 450, AK-CC 550

FAQ

• Q: Can I use this controller with both 230 V and 115 V ACcoils?
• A: Yes, the controller is compatible with both coil voltage options. Ensure not to exceed the maximum current of 0.5 A.
• Q: How many controllers can receive signals from one pressure transmitter?
• A: Up to 10 controllers can receive signals from one pressure transmitter. Ensure no significant pressure drop from the transmitter to the evaporators.

Identification

Dimensions

Principle

The controller is provided with labels from the factory indicating a generic application. When selecting the required application, specific labels are provided so that you can mount the relevant one.

Data communication

• The installation of the data communication cable must be performed correctly with sufficient distance to high voltage cables.

AKV info

AKS 32R info

• The signal from one pressure transmitter can be received by up to 10 controllers.
• There must not be a significant pressure drop from the pressure transmitter’s position in the suction line to the individual evaporators.

Coordinated defrost via cable connections

Max. 10

• The following controllers can be connected in this way:
• EKC 204A, AK-CC 210, AK-CC 250,AK-CC 450, AK-CC 550 and AK-CC55.
• Refrigeration is resumed at the same time when all controllers have terminated defrost.

External display AK-UI

Display

• 084B4075 / 084B4076 / 084B4077
• Cable 3 m: 084B4078
• Cable 6 m: 084B4079
• (L: Max. 100 m)

Connections

• See table below

Overview of outputs and applications

See also the wiring diagrams earlier in the Installation Guide.

• = Optional
• 1Custom set-up of relays
• 2AO1 can be configured for fast pulsing of rail heat or external stepper driver
• 3DI1 can be configured as S5B sensor in d10

AI1Pressure transmitter

• AKS 32R Connect to terminals 40, 41 and 42.
• (Use cable 060G1034: Black=40, Brown=41, Blue=42)The signal from one pressure transmitter can be received by up to 10 controllers. But only if there are no significant pressure drops between the evaporators to be controlled. See the drawing on page 5.

Note: when replacing AK-CC 550A with AK-CC55, S and ground must be switched.

AI2 – AI7
Primarily for temperature inputs

• S2 Pt 1000 ohm sensor AKS11, placed at the evaporator outlet
• S3, S4, S5 Pt 1000 AKS11, PTC 1000 EKS111, NTC5K EKS211 or NTC10KEKS221 sensor. All have to be of the same type.
• S3, return air sensor, placed in the warm air before the evaporator
• S4, discharge air sensor, placed in the cold air after the evaporator(the need for either S3 or S4 can be selected in the configuration)
• S5, defrost sensor, placed in the evaporator
• S6, Pt 1000 ohm sensor, and food temperature sensor placed in between the food products

(If the DI1 input is used for temperature measurement, it will appear as AI7.)

DI1

• Digital input signal.
• The defined function is active when the input is short-circuited or opened, depending on the function defined in o02.

DI2

• Digital input signal.
• The defined function is active when the input is short-circuited or opened, depending on the function defined in o37.

Analogue output signal

• Analogue 0 – 10 V
• Can be used to drive an external stepper driver.
• Pulse width modulated signal
• Can be used for fast control of rail heat via an external power solid-state relay.

MODBUS

• For data communication.
• Terminal 83 = BTerminal
• 84 = A+
• Terminal 85 = screen

Supply voltage

• 230 V AC or 115 V AC

DO1

• AKV valve
• Connection of expansion valve type AKV, AKVA, AKVH or AKVP.
• The coil must be a 230 V or 115 V AC coil.
• Liquid line solenoid valve
• Connection of normally closed valve in connection with stepper valve.

DO2

• Alarm
• There is a connection between terminals 10 and 12 in alarm situations and when the controller is without power.
• Light, Rail heat, Compressor, Night blind
• There is a connection between terminals 10 and 11 (10 and 12 at light) when the function is on.
• Suction line valve
• There is a connection between terminals 10 and 11 when the suction line must be open.

DO3

• Compressor, Rail heat, Defrost, Drain valve, Humidity
• There is a connection between terminals 13 and 14 when the function must be active

DO4

• Defrost
• There is a connection between terminals 15 and 16 when defrosting takes place.
• Hot gas
• There is a connection between terminals 15 and 16 when the hot-gas valves must open.

Note: When replacing AK-CC550A with AK-CC55, wires must be switched.

DO5

• Light
• There is a connection between terminals 18 and 20 when the function must be active.
• Rail heat
• There is a connection between terminals 18 and 19 when the rail heat must be on.

DO6
Fan
There is a connection between terminals 21 and 22 when the fans are on.

DO2-DO6 + AO1 and Application 9

• Here, the different outputs can be custom-defined in q02-q09

DI3

• Digital input signal.
• The signal must have a voltage of 0 / 230 V AC (115 V AC)
• The function is defined in o84.

Display (RJ12 plug)

• If external readings/operation of the controller is required, a display can be connected. If there is no display on the front, two external displays can be connected.
• For one display the max. cable length is 100 m.
• For two displays the sum of the two cable lengths must not exceed 100 m.

Note: When replacing AK-CC 550A with AK-CC55, AKA 16Xremote displays and cables have to be replaced with new AK-UI55 displays.

Electric noise
Cables for sensors, low voltage DI inputs and data communication must be kept separate from other electric cables:

• Use separate cable trays
• Keep a distance between cables of at least 10 cm
• Long cables at the low-voltage DI input should be avoided

Installation considerations

• Accidental damage, poor installation, or site conditions, can give rise to malfunctions of the control system, and ultimately lead to implant breakdown.
• Every possible safeguard is incorporated into our products toprevent this. However, a wrong installation could still present problems. Electronic controls are no substitute for normal, good engineering practice.
• Danfoss will not be responsible for any goods, or plant components, damaged as a result of the above defects. It is the installer’s responsibility to check the installation thoroughly and to fit the necessary safety devices.
• Special reference is made to the necessity of signals to the controller when the compressor is stopped and to the need for liquid receivers before the compressors.
• Your local Danfoss agent will be pleased to assist with further advice, etc.

Replacing AK-CC 550A with AK-CC55

• Be aware when exchanging an AK-CC 550A controller with a new AK-CC55 controller – new wiring principles!
• The pressure sensor has a new connection – signal and ground switched
• SPDT relays have a new wiring scheme – NO and NC terminals are switched (e.g. defrost heater on when it should be off)
• Modbus has a new connection scheme (A, B and screen)
• New AK-UI55 displays and cables with 6 wires vs. 4 wires for EKA 16x

• AK-CC55 does not support two EEC coils connected to one AKV output.
• Pressure transmitters can be shared between AK-CC 550 and AK-CC55.
• DI2 defrost coordination can be wired between AK-CC 550 and AK-CC55.

Operation with setting display

Display AK-UI55 Set
The values will be shown with three digits, and with a setting you can determine whether the temperature is to be shown in °C or in °F.

The display can give the following messages:

• d- Defrost is in progress
• Err The temperature cannot be displayed due to a sensor error
• Err1 The display cannot load data from the controller. Disconnect and then reconnect the display
• Err2 Lost display communication
• ALA The alarm button is activated. The first alarm code is then shown
• – – – At the top position of the menu or when max. value has been reached, the three dashes are shown at the top of the display
• – – – At the bottom position of the menu or when min. value has been reached, the three dashes are shown at the bottom of the display
• Loc The configuration is locked. Unlock by pressing (for 3 seconds) on the ‘up arrow’ and ‘down arrow’ simultaneously
• UnL The configuration is unlocked
• – – – The parameter has reached min. or max. limit
• PS A password is required for access to the menu
• Fan Appliance cleaning has been initiated. The fans are running
• OFF Appliance cleaning is activated and the appliance can now be cleaned
• OFF The main switch is set to Off
• SEr The main switch is set to service / manual operation
• CO Flashes: Will display in the event of a refrigerant leakage alarm, but only if the refrigerant is set up for CO2

Factory setting
If you need to return to the factory-set values, do the following:

• Cut off the supply voltage to the controller
• Keep up “∧” and down “∨” arrow buttons depressed at the same time as you reconnect the supply voltage
• When FAc is shown in the display, select “yes”.

Parameter grouping at display operation

Get a good start
With the following procedure, you can start regulation very quickly:

1. Open parameter r12 and stop the regulation (in a new and not previously set unit, r12 will already be set to 0 which means stopped regulation)
2. Select application based on the wiring diagrams on pages 2-4
3. Open parameter o61 and set the application number
4. For network. Set the address in o03
5. Then select a set of presets from the “Food type” help table
6. Open parameter r89 and set the number for the array of settings. The few selected settings will now be transferred to the menu
7. Set the desired cut-out temperature to r00
8. Select refrigerant via parameter o30
9. Set the pressure transmitter min. and max. range via parameters o20 and o21
10. Set the desired defrost method in d01
11. Set the interval time between defrost starts in d03
12. Set the desired defrost sensor in d10
13. Set the maximum defrost time in d04
14. Set the defrost stop temperature in d02
15. Open parameter r12 and start the regulation
16. Go through the parameter list and change the factory values where needed.
17. Get the controller up and running on the network:
    • MODBUS: Activate the scan function in the system unit
    • If another data communication card is used in the controller:
    • Lon RS485: Activate the function o04
    • Ethernet: Use the MAC address

• The output’s function.
• (Determined at configuration).
• The DOs and AOs can also be forcedcontrolled from this menu, when r12Main switch has been set in position”service”.
• Forced control of a function can also be performed in codes q11 to q27.
• The input’s function.
• (Determined at configuration).

Food type

Setting of settings (r89). After setting 1-5,

the setting is returned to 0.

Food type =

| 1

Vege- tables

| 2

Milk

| 3

Meat/ fish

| 4

Frozen food

| 5

Ice cream

---|---|---|---|---|---
Temperature (r00)| 8 °C| 0 °C| -2 °C| -20 °C| -24 °C
Max. temp. setting (r02)| 10 °C| 4 °C| 2 °C| -16 °C| -20 °C
Min. temp. setting (r03)| 4 °C| -4 °C| -6 °C| -24 °C| -28 °C
Upper alarm limit (A13)| 14 °C| 8 °C| 8 °C| -15 °C| -15 °C
Lower alarm limit (A14)| 0 °C| -5 °C| -5 °C| -30 °C| -30 °C
Upper alarm limit for S6 (A22)| 14 °C| 8 °C| 8 °C| -15 °C| -15 °C
Lower alarm limit for S6 (A23)| 0 °C| -5 °C| -5 °C| -30 °C| -30 °C

• Can only be set when r12=0.

AK-UI55 display menu

Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Thermostat
Cut-out 1|  | 0-0| r00| | | | | | | | | | r03| r02| 2.0 °C
Differential|  | 1-2| r01| | | | | | | | | | 0.1 °C| 20.0 °C| 2.0 °C
Max cut-out limit|  | 0-2| r02| | | | | | | | | | r03| 50.0 °C| 50.0 °C
Min cut-out limit|  | 0-2| r03| | | | | | | | | | -50.0 °C| r02| -50.0 °C
Display readout adjustment|  | 1-2| r04| | | | | | | | | | -10.0 °C| 10.0 °C| 0.0 °C
Temperature unit| 0=Celsius, 1=Fahrenheit| 1-2| r05| | | | | | | | | | 0| 1| 0
S4 Air OFF evap. A – Adjust- menu|  | 1-2| r09| | | | | | | | | | -10.0 °C| 10.0 °C| 0.0 °C
S3 Air ON evap. A – Adjust- menu|  | 1-2| r10| | | | | | | | | | -10.0 °C| 10.0 °C| 0.0 °C
Main switch| -1=Manual, 0=Stop, 1=Start| 0-2| r12| | | | | | | | | | -1| 1| 0
Night offset|  | 1-2| r13| | | | | | | | | | -50.0 °C| 50.0 °C| 0.0 °C
Thermostat mode| 1=ON/OFF, 2=Modulating| 1-2| r14| | | | | | | | | | 1| 2| 1
Thermostat sensor S4 %|  | 1-2| r15| | | | | | | | | | 0 %| 100 %| 100%
Melt interval|  | 1-2| r16| | | | | | | | | | 0 h| 10 h| 1h
Melt period|  | 1-2| r17| | | | | | | | | | 0 min| 30 min| 5 min
Cut-out 2|  | 0-2| r21| | | | | | | | | | -50.0 °C| 50.0 °C| 2.0 °C
S3 Air ON evap. B – Adjust- menu|  | 1-2| r53|  |  |  |  |  | | |  |  | -10.0 °C| 10.0 °C| 0.0 °C
S6 product temp. – Adjustment|  | 1-2| r59| | | | | |  |  | | | -10.0 °C| 10.0 °C| 0.0 °C
Thermostat sensor S4 % night|  | 1-2| r61| | | | | | | | | | 0 %| 100 %| 100%
Air heater neutral zone|  | 1-2| r62|  |  |  |  |  |  |  |  | | 0.0 °C| 50.0 °C| 5.0 °C
Air heater start delay|  | 1-2| r63|  |  |  |  |  |  |  |  | | 0 min| 240 min| 240 min
Food type| 0=None, 1=Vegetables, 2=Dairy, 3=Meat and fish, 4=Frozen food, 5=Ice cream| 1-21)| r89| | | | | | | | | | 0| 5| 0
S4 frost protection|  | 1-2| r98| | | | | | | | | | -50.0 °C| 50.0 °C| -50.0 °C
Alarm settings
Alarm delay A|  | 1-2| A03| | | | | | | | | | 0 min| 240 min| 30 min
Door open alarm delay|  | 1-2| A04| | | | | | | | | | 0 min| 240 min| 60 min
Alarm delay pull down A|  | 1-2| A12| | | | | | | | | | 0 min| 240 min| 90 min
High alarm limit 1|  | 1-2| A13| | | | | | | | | | -50.0 °C| 50.0 °C| 8.0 °C
Low alarm limit 1|  | 1-2| A14| | | | | | | | | | -50.0 °C| 50.0 °C| -30.0 °C
High alarm limit 2|  | 1-2| A20| | | | | | | | | | -50.0 °C| 50.0 °C| 8.0 °C
Low alarm limit 2|  | 1-2| A21| | | | | | | | | | -50.0 °C| 50.0 °C| -30.0 °C
S6 High alarm limit 1|  | 1-2| A22| | | | | |  |  | | | -50.0 °C| 50.0 °C| 8.0 °C
S6 Low alarm limit 1|  | 1-2| A23| | | | | |  |  | | | -50.0 °C| 50.0 °C| -30.0 °C
S6 High alarm limit 2|  | 1-2| A24| | | | | |  |  | | | -50.0 °C| 50.0 °C| 8.0 °C
S6 Low alarm limit 2|  | 1-2| A25| | | | | |  |  | | | -50.0 °C| 50.0 °C| -30.0 °C
S6 alarm delay|  | 1-2| A26| | | | | |  |  | | | 0 min| 240 min| 60 min
Alarm delay DI 1|  | 1-2| A27| | | | | | |  |  | | 0 min| 240 min| 30 min
Alarm delay DI 2|  | 1-2| A28| | | | | | | | | | 0 min| 240 min| 30 min
Alarm sensor S4% A|  | 1-2| A36| | | | | | | | | | 0 %| 100 %| 100%
S6 alarm pull-down delay|  | 1-2| A52| | | | | |  |  | | | 0 min| 240 min| 90 min
Alarm delay B|  | 1-2| A53|  |  |  |  |  | | |  |  | 0 min| 240 min| 30 min
Use product sensor S6| 0=No, 1=Yes| 1-21)| a01| | | | | |  |  | | | 0| 1| 0

• R-W: If the operation is protected by one or more passwords, reading and setting the parameter will be limited to:
• R: This setting can be seen with password no. _ or higher (3 is the highest level).
• W: This setting can be performed with password no. _ or higher (3 is the highest level).

1. In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.
2. In order to change this parameter the parameter r12 Main switch must be set in position “SEr” allowing manual control of outputs.

Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Compressor
Min ON time|  | 1-2| c01| | | |  |  |  |  |  | | 0 min| 30 min| 0 min
Min OFF time|  | 1-2| c02| | | |  |  |  |  |  | | 0 min| 30 min| 0 min
Delay between comp.|  | 1-2| c05|  |  |  |  |  |  |  |  | | 0 s| 999 s| 5 s
Step control mode| 1=Sequential, 2=Cyclic| 1-2| c08|  |  |  |  |  |  |  |  | | 1| 2| 2
Defrost
Defrost method| 0=None, 1=Electrical, 2=Hot gas, 4=Air/Offcycle| 1-3| d01| | | | | | | | | | 0| 4| 1
Defrost stop limit A|  | 1-2| d02| | | | | | | | | | 0.0 °C| 50.0 °C| 6.0°C
Defrost start interval|  | 1-2| d03| | | | | | | | | | 0 h| 240 h| 8 h
Max. defrost time|  | 1-2| d04| | | | | | | | | | 0 min| 360 min| 45 min
Time staggering power-up|  | 1-2| d05| | | | | | | | | | 0 min| 240 min| 0 min
Drip off time|  | 1-2| d06| | | | | | | | | | 0 min| 60 min| 0 min
Fan start delay|  | 1-2| d07| | | | | | | | | | 0 min| 60 min| 0 min
Fan start temperature|  | 1-2| d08| | | | | | | | | | -50.0 °C| 10.0 °C| -5.0 °C
Fan control during defrost| 0=OFF, 1=ON, 2=OFF at drip, 3=OFF

at high temp

| 1-2| d09| | | | | | | | | | 0| 3| 1
Defrost stop method| 0=Time, 1=S5 sensor, 2=S4 sensor, 3=S5A and S5B| 1-2| d10| | | | | | | | | | 0| 3| 0
Pump down delay|  | 1-2| d16| | | | | | | | | | 0 min| 60 min| 0 min
Drain delay|  | 1-2| d17|  |  |  |  | |  |  |  |  | 0 min| 60 min| 0 min
Max. thermostat run time|  | 1-2| d18| | | | | | | | | | 0 h| 240 h| 0 h
Adaptive defrost mode| 0=OFF, 1=Monitoring, 2=Skip day, 3=Skip day/night, 4=Full adaptive| 1-21)| d21| | | | | | | | | | 0| 4| 0
Hot gas injection delay|  | 1-2| d23|  |  |  |  | |  |  |  |  | 0 min| 60 min| 0 min
Rail heat during defrost| 0=OFF, 1=ON, 2=Normal control| 1-2| d27| | | | | | | | | | 0| 2| 1
Display delay after defrost|  | 1-2| d40| | | | | | | | | | 5 min| 240 min| 30 min
Fan stop temperature|  | 1-2| d41| | | | | | | | | | -20.0 °C| 20.0 °C| 0.0 °C
Injection control
Max. superheat limit|  | 1-2| n09| | | | | | | | | | n10| 20.0 °C| 12.0 °C
Min. superheat limit|  | 1-2| n10| | | | | | | | | | 2.0 °C| n09| 3.0 °C
MOP temperature|  | 1-2| n11| | | | | | | | | | -50.0 °C| 15.0 °C| 15.0 °C
AKV Period time|  | 1-21)| n13| | | | | | | | | | 3 s| 6 s| 6s
Fan control
Fan stop high S5 temp.|  | 1-2| F04| | | | | | | | | | -50.0 °C| 50.0 °C| 50.0 °C
Fan pulsing mode| 0=No pulsing, 1=Pulsing cut-out, 2=Pulsing cut-out night| 1-2| F05| | | | | | | | | | 0| 2| 0
Fan period time|  | 1-2| F06| | | | | | | | | | 1 min| 30 min| 5 min
Fan ON cycle|  | 1-2| F07| | | | | | | | | | 0 %| 100 %| 100%
Defrost schedule
Defrost schedule| 0=No, 1=Yes| 1-2| t00| | | | | | | | | | 0| 1| 0
Def. start 1 – Hours|  | 1-2| t01| | | | | | | | | | 0 h| 23 h| 0 h
Def. start 1 – Minutes|  | 1-2| t11| | | | | | | | | | 0 min| 59 min| 0 min
Def. start 2 – Hours|  | 1-2| t02| | | | | | | | | | 0 h| 23 h| 0 h
Def. Start 2 – Minutes|  | 1-2| t12| | | | | | | | | | 0 min| 59 min| 0 min
Def. start 3 – Hours|  | 1-2| t03| | | | | | | | | | 0 h| 23 h| 0 h
Def. Start 3 – Minutes|  | 1-2| t13| | | | | | | | | | 0 min| 59 min| 0 min
Def. start 4 – Hours|  | 1-2| t04| | | | | | | | | | 0 h| 23 h| 0 h
Def. start 4 – Minutes|  | 1-2| t14| | | | | | | | | | 0 min| 59 min| 0 min
Def. start 5 – Hours|  | 1-2| t05| | | | | | | | | | 0 h| 23 h| 0 h
Def. start 5 – Minutes|  | 1-2| t15| | | | | | | | | | 0 min| 59 min| 0 min
Def. start 6 – Hours|  | 1-2| t06| | | | | | | | | | 0 h| 23 h| 0 h
Def. start 6 – Minutes|  | 1-2| t16| | | | | | | | | | 0 min| 59 min| 0 min
Time hours|  | 0-1| t07| | | | | | | | | | 0 h| 23 h| 0 h
Time minutes|  | 0-1| t08| | | | | | | | | | 0 min| 59 min| 0 min
Time date|  | 0-1| t45| | | | | | | | | | 1| 31| 1
Time month|  | 0-1| t46| | | | | | | | | | 1| 12| 1
Time year|  | 0-1| t47| | | | | | | | | | 0| 100| 0
Monday – Follow schedule| 0=No, 1=Yes| 1-2| t51| | | | | | | | | | 0| 1| 1
Tuesday – Follow schedule| 0=No, 1=Yes| 1-2| t52| | | | | | | | | | 0| 1| 1
Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Wednesday – Follow schedule| 0=No, 1=Yes| 1-2| t53| | | | | | | | | | 0| 1| 1
Thursday – Follow schedule| 0=No, 1=Yes| 1-2| t54| | | | | | | | | | 0| 1| 1
Friday – Follow schedule| 0=No, 1=Yes| 1-2| t55| | | | | | | | | | 0| 1| 1
Saturday – Follow schedule| 0=No, 1=Yes| 1-2| t56| | | | | | | | | | 0| 1| 1
Sunday – Follow schedule| 0=No, 1=Yes| 1-2| t57| | | | | | | | | | 0| 1| 1
Humidity control
Humidity cut-in|  | 0-2| h23|  |  |  |  |  |  |  | |  | 0 RH%| 100 RH%| 70 RH%
Humidity differential|  | 1-2| h24|  |  |  |  |  |  |  | |  | 1 RH%| 30 RH%| 5 RH%
Humidity high alarm limit|  | 1-2| h25|  |  |  |  |  |  |  | |  | 0 RH%| 100 RH%| 100 RH%
Humidity low alarm limit|  | 1-2| h26|  |  |  |  |  |  |  | |  | 0 RH%| 100 RH%| 0 RH%
Humidity alarm delay|  | 1-2| h27|  |  |  |  |  |  |  | |  | 0 min| 240 min| 60 min
Humidity ctrl. at defrost| 0=No, 1=Yes| 1-2| h28|  |  |  |  |  |  |  | |  | 0| 1| 0
Humidity sensor – Min signal|  | 1-21)| h29|  |  |  |  |  |  |  | |  | 0 RH%| h30| 0 RH%
Humidity sensor – Max signal|  | 1-21)| h30|  |  |  |  |  |  |  | |  | h29| 100 RH%| 100 RH%
Humidity control| 0=None, 1=Humidifier, 2=Dehumidifier| 1-31)| h31|  |  |  | |  |  |  | |  | 0| 2| 0
Humidity max. temp.|  | 1-2| h32|  |  |  |  |  |  |  | |  | h33| 70.0 °C| 70.0 °C
Humidity min. temp.|  | 1-2| h33|  |  |  |  |  |  |  | |  | -5.0 °C| h32| 2.0 °C
Miscellaneous
Delay of outputs at power-up|  | 1-2| o01| | | | | | | | | *| 0 s| 600 s| 5 s
DI1 Configuration| 0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm

at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control, 22=Valve driver, 23=Fan

alarm

| 1-21)| o02| | | | | | |  |  | | 0| 23| 0
Network address|  | 1-31)| o03| | | | | | | | | | 0| 240| 0
Service pin| 0=OFF, 1=ON| 1-2| o04| | | | | | | | | | 0| 1| 0
Access code 3|  | 3-3| o05| | | | | | | | | | 0| 999| 0
Temperature sensor type| 0=Pt 1000, 1=PTC 1000, 2=NTC 5k,

3=NTC 10k

| 1-31)| o06| | | | | | | | | | 0| 3| 0
Max. hold time|  | 1-2| o16| | | | | | | | | | 0 min| 360 min| 20 min
Display air S4%|  | 1-2| o17| | | | | | | | | | 0 %| 100 %| 100%
Pe Min range|  | 1-31)| o20| | | | | | | | | | -1.0 Bar| 5.0 Bar| -1.0 Bar
Pe Max Range|  | 1-31)| o21| | | | | | | | | | 6.0 Bar| 200.0 Bar| 12.0 Bar
AO1 Min. voltage|  | 1-31)| o27| | | | | | |  | | | 0.0 V| o28| 0.0 V
AO1 Max. voltage|  | 1-31)| o28| | | | | | |  | | *| o27| 10.0 V| 10.0 V
Refrigerant| 0=Not selected, 6=R13, 7=R13b1, 2=R22, 8=R23, 14=R32, 11=R114,

3=R134a, 12=R142b, 24=R170,

15=R227, 25=R290, 16=R401A,

18=R402A, 19=R404A, 21=R407A,

22=R407B, 20=R407C, 37=R407F,

49=R407H, 23=R410A, 32=R413A,

30=R417A, 31=R422A, 33=R422D,

34=R427A, 35=R438A, 40=R448A,

41=R449A, 48=R449B, 43=R450A,

44=R452B, 45=R454B, 9=R500,

4=R502, 10=R503, 17=R507,

36=R513A, 26=R600, 27=R600a,

5=R717, 28=R744, 46=R1233zdE,

38=R1234ze, 39=R1234yf,

47=R1234zeZ, 29=R1270,

42=R452A, 1=User defined display,

13=User defined

| 1-31)| o30| | | | | | | | | *| 0| 49| 0
Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
DI2 Configuration| 0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm

at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control, 22=Valve driver, 23=Fan

alarm

| 1-21)| o37| | | | | | | | | | 0| 23| 0
Light control mode| 1=Day and night, 2=Network, 3=Door switch, 4=Network (Fallback), 5=Digital input| 1-2| o38| | |  | | | | | | | 1| 5| 1
MC Light signal| 0=OFF, 1=ON| 1-2| o39| | |  | | | | | | | 0| 1| 0
Rail heat ON cycle day|  | 1-2| o41| | | | | | | | | | 0 %| 100 %| 100%
Rail heat ON cycle night|  | 1-2| o42| | | | | | | | | | 0 %| 100 %| 100%
Rail heat period time|  | 1-2| o43|  | | | |  | |  |  | | 6 min| 60 min| 6 min
Case cleaning mode| 0=OFF, 1=Fans run, 2=Cleaning| 0-1| o46| | | | | | | | | *| 0| 2| 0
Application mode| 1=1. Comp/Alarm/Light, 2=2.

Comp/Rail/Light, 3=3. Comp/

Alarm/Rail, 4=4. Alarm/Rail/Light,

5=5. Hot gas remote, 6=6. Dual

with 1 evap., 7=7. Dual with 2 evap.,

8=8. Cold room, 9=9. Custom

| 1-31)| o61| | | | | | | | | | 1| 9| 1
Access code 2|  | 2-2| o64| | | | | | | | | | 0| 999| 0
Make new factory| 0=OFF, 1=ON| 3-31)| o67| | | | | | | | | *| 0| 1| 0
DI3 Configuration| 0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm

at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control, 22=Valve driver, 23=Fan

alarm

| 1-21)| o84| | | | | | | | | | 0| 23| 0
Rail heat control mode| 0=ON, 1=Day/Night timer, 2=Dewpoint ctrl.| 1-2| o85| | | | | | | | | | 0| 2| 0
Dewpoint min. limit|  | 1-2| o86| | | | | | | | | | -10.0 °C| o87| 8.0 °C
Dewpoint max. limit|  | 1-2| o87| | | | | | | | | | o86| 50.0 °C| 17.0 °C
Rail heat min. ON cycle|  | 1-2| o88| | | | | | | | | | 0 %| 100 %| 30%
Door restart inj. delay|  | 1-2| o89| | | | | | | | | | 0 min| 240 min| 30 min
Fan at forced closing| 0=OFF, 1=ON, 2=OFF and suppress defrost, 3=ON and suppress defrost| 1-2| o90| | | | | | | | | | 0| 3| 1
Display readout| 1=Display air, 2=S6 Product temp.| 1-2| o97| | | | | | |  | | | 1| 2| 1
Light at Main switch OFF| 0=OFF, 1=Normal ctrl.| 1-2| o98| | |  | | | | | | | 0| 1| 0
Control
Alarm relay priority| 0=Not used, 1=High Priority, 2=Medium priority, 3=All| 1-2| P41| |  | | |  | | | | | 0| 3| 2
Blinds max. open time|  | 1-2| P60|  |  |  |  |  |  |  |  | | 0 min| 60 min| 5 min
Fan stop at blinds closing|  | 1-2| P65| | |  | | | | | | | 0 s| 300 s| 0 s
Rail heat PWM – Period time|  | 1-2| P82| | | | | | | | | | 4 s| 60 s| 10 s
Refrigerant factor K1|  | 1-31)| P83| | | | | | | | | | -999| 999| 300
Refrigerant factor K2|  | 1-31)| P84| | | | | | | | | | -999| 999| 300
Refrigerant factor K3|  | 1-31)| P85| | | | | | | | | | -999| 999| 300
Max. superheat liquid ctrl. A|  | 1-2| P86| | | | | | | | | | P87| 20.0 °C| 3.0 °C
Min. superheat liquid ctrl A|  | 1-2| P87| | | | | | | | | | 0.0 °C| P86| 1.0 °C
Access code 1|  | 1-1| P88| | | | | | | | | | 0| 999| 0
Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Display lock| 0=OFF, 1=ON| 1-2| P89| | | | | | | | | | 0| 1| 0
LLSV closing delay|  | 1-2| P92| | | | | | |  | | | 0 s| 300 s| 5s
DO config and Manual
DO2 Configuration| 0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater| 1-31)| q02|  |  |  |  |  |  |  |  | | 0| 10| 5
DO3 Configuration| 0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater| 1-31)| q03|  |  |  |  |  |  |  |  | | 0| 10| 8
DO4 Configuration| 0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater| 1-31)| q04|  |  |  |  |  |  |  |  | | 0| 10| 9
DO5 Configuration| 0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater| 1-31)| q05|  |  |  |  |  |  |  |  | | 0| 10| 3
DO6 Configuration| 0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater| 1-31)| q06|  |  |  |  |  |  |  |  | | 0| 10| 1
AO1 Configuration| 0=None, 1=Rail heat PWM, 2=Valve driver| 1-31)| q09| | | | | | | | | | 0| 2| 0
EEV override A|  | 1-22)| q11| | | | | | | | | | 0 %| 100 %| 0 %
Compressor 1 – override| 0=MAN OFF, 1=MAN ON| 1-22)| q12| | | |  |  |  |  | | | 0| 1| 0
Fan – override| 0=MAN OFF, 1=MAN ON| 1-22)| q13| | | | | | | | | | 0| 1| 0
Defrost A – override| 0=MAN OFF, 1=MAN ON| 1-22)| q14| | | | |  | | | | | 0| 1| 0
Rail heat – override| 0=MAN OFF, 1=MAN ON| 1-22)| q15|  | | | |  | |  |  | | 0| 1| 0
Alarm relay – override| 0=MAN OFF, 1=MAN ON| 1-22)| q16| |  | | |  | | | | | 0| 1| 0
Light – override| 0=MAN OFF, 1=MAN ON| 1-22)| q17| | |  | | | | | | | 0| 1| 0
Suction valve – override| 0=MAN OFF, 1=MAN ON| 1-22)| q18|  |  |  |  | |  | |  |  | 0| 1| 0
Compressor 2 – override| 0=MAN OFF, 1=MAN ON| 1-22)| q19|  |  |  |  |  |  |  | | | 0| 1| 0
Hot gas valve – override| 0=MAN OFF, 1=MAN ON| 1-22)| q20|  |  |  |  | |  | |  |  | 0| 1| 0
Blinds – override| 0=MAN OFF, 1=MAN ON| 1-22)| q21|  |  |  |  |  |  |  |  | | 0| 1| 0
Defrost B – override| 0=MAN OFF, 1=MAN ON| 1-22)| q22|  |  |  |  |  |  | |  | | 0| 1| 0
Air heater – override| 0=MAN OFF, 1=MAN ON| 1-22)| q23|  |  |  |  |  |  |  | | | 0| 1| 0
Fan ECO – override| 0=MAN OFF, 1=MAN ON| 1-22)| q24|  |  |  |  |  |  |  |  | | 0| 1| 0
Drain valve – override| 0=MAN OFF, 1=MAN ON| 1-22)| q25|  |  |  |  | |  |  | |  | 0| 1| 0
Humidifier – override| 0=MAN OFF, 1=MAN ON| 1-22)| q26|  |  |  |  |  |  |  | |  | 0| 1| 0
Rail heat PWM – override|  | 1-22)| q27| | | | | | | | | | 0 %| 100 %| 0 %
High temperature – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q28| | | | | | | | | | 0| 3| 1
Low temperature – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q29| | | | | | | | | | 0| 3| 1
Sensor errors – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q30| | | | | | | | | | 0| 3| 1
DI alarms – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q31| | | | | | | | | | 0| 3| 2
Defrost – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q32| | | | | | | | | | 0| 3| 3
Miscellaneous – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q33| | | | | | | | | | 0| 3| 2
Injection – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q34| | | | | | | | | | 0| 3| 2
Control stopped – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q35| | | | | | | | | | 0| 3| 3
Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Leak detection – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q36| | | | | | | | | | 0| 3| 2
Humidity ctrl. – Priority| 0=Disabled, 3=Low, 2=Medium, 1=High| 1-2| q37|  | |  |  |  |  |  | |  | 0| 3| 2
Food temp. sensor| 1=Thermostat air, 2=Alarm air, 3=S3 Air ON evap., 4=S6 Product temp.| 1-21)| q39| | | | | | | | | | 1| 4| 2
LLSV – override| 0=MAN OFF, 1=MAN ON| 1-2| q45| | | | | | |  | | | 0| 1| 0
Dehumidifier – override| 0=MAN OFF, 1=MAN ON| 1-2| q46|  |  |  |  |  |  |  | |  | 0| 1| 0
Service
Control state A| 0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip off, 5=Restart timer, 6=Ctrl_Sout, 7=Ctrl_Sin, 8=Cut-in delay, 9=Cut-out delay, 10=Main switch OFF, 11=Thermostat

cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 21=Injection error, 22=Charging evaporator, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 27=Forced_cooling1, 28=AmbientMode, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 35=Cooling_ON_B, 36=Cooling_OFFB, 37=Cooling ON_C, 38=Cooling_OFF_C, 39=Cooling_OND, 40=Cooling OFF_D, 41=HighSc, 42=Heat Recovery, 43=S43, 44=Sensor_ error_recovery, 45=Shut down controller, 46=Power_Module, 47=Load_shed, 48=Adaptive liquid control

| 0-X| u00| | | | | | | | | | 0| 48| 0
S5 Evaporator A|  | 0-X| u09| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
DI1 Status| 0=OFF, 1=ON| 0-X| u10| | | | | | |  |  | | 0| 1| 0
Defrost time A|  | 0-X| u11| | | | | | | | | | 0 min| 900 min| 0 min
S3 Air ON evap. A|  | 0-X| u12| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Night condition| 0=OFF, 1=ON| 0-X| u13| | | | | | | | | | 0| 1| 0
S4 Air OFF evap. A|  | 0-X| u16| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Thermostat air temp. A|  | 0-X| u17| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Thermostat run time A|  | 0-X| u18| | | | | | | | | | 0 min| 999 min| 0 min
S2 Gas outlet A|  | 0-X| u20| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Superheat A|  | 0-X| u21| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Superheat reference A|  | 0-X| u22| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
EEV opening A|  | 0-X| u23| | | | | | | | | | 0 %| 100 %| 0%
Pe Evap. pressure|  | 0-X| u25| | | | | | | | | | -1.0 Bar| 200.0 Bar| 0.0 Bar
Te Evap. temp.|  | 0-X| u26| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
S6 product temp.|  | 0-X| u36| | | | | |  |  | | | -200.0 °C| 200.0 °C| 0.0 °C
DI2 Status| 0=OFF, 1=ON| 0-X| u37| | | | | | | | | | 0| 1| 0
Display readout 1|  | 0-X| u56| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Alarm air temp. A|  | 0-X| u57| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Compressor 1| 0=OFF, 1=ON| 0-X| u58| | | |  |  |  |  |  | | 0| 1| 0
Fan| 0=OFF, 1=ON| 0-X| u59| | | | | | | | | | 0| 1| 0
Defrost A| 0=OFF, 1=ON| 0-X| u60| | | | |  | | | | | 0| 1| 0
Rail heat| 0=OFF, 1=ON| 0-X| u61|  | | | |  | |  |  | | 0| 1| 0
Alarm relay| 0=OFF, 1=ON| 0-X| u62| |  | | |  | | | | | 0| 1| 0
Light| 0=OFF, 1=ON| 0-X| u63| | |  | | | | | | | 0| 1| 0
Function| Values| R-W| Code| 1| 2| 3| 4| 5| 6| 7| 8| 9| Min. value| Max. value| Fact. value
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Suction valve| 0=OFF, 1=ON| 0-X| u64|  |  |  |  | |  |  |  |  | 0| 1| 0
Compressor 2| 0=OFF, 1=ON| 0-X| u67|  |  |  |  |  |  |  |  | | 0| 1| 0
S5 Evaporator B|  | 0-X| u75| | | | | | | |  | | -200.0 °C| 200.0 °C| 0.0 °C
S3 Air ON evap. B|  | 0-X| u76|  |  |  |  |  | | |  |  | -200.0 °C| 200.0 °C| 0.0 °C
Hot gas valve| 0=OFF, 1=ON| 0-X| u80|  |  |  |  | |  |  |  |  | 0| 1| 0
Blinds| 0=OFF, 1=ON| 0-X| u82|  |  |  |  |  |  |  |  | | 0| 1| 0
Defrost B| 0=OFF, 1=ON| 0-X| u83|  |  |  |  |  |  | |  |  | 0| 1| 0
Air heater| 0=OFF, 1=ON| 0-X| u84|  |  |  |  |  |  |  |  | | 0| 1| 0
Rail heat power|  | 0-X| u85| | | | | | | | | | 0 %| 100 %| 0%
Thermostat band| 1=Band 1, 2=Band 2| 0-X| u86| | | | | | | | | | 1| 2| 1
DI3 Status| 0=OFF, 1=ON| 0-X| u87| | | | | | | | | | 0| 1| 0
Thermostat cut-in temp.|  | 0-X| u90| | | | | | | | | | -200.0 °C| 200.0 °C| 4.0 °C
Thermostat cut-out temp.|  | 0-X| u91| | | | | | | | | | -200.0 °C| 200.0 °C| 2.0 °C
Adaptive defrost state| 0=OFF, 1=Error, 2=Tuning, 3=OK, 4=Little ice, 5=Medium ice, 6=Heavy ice| 0-X| U01| | | | | | | | | | 0| 6| 0
Accumulated defrosts|  | 0-X| U10| | | | | | | | | | 0| 32767| 0
Accumulated skipped defrosts|  | 0-X| U11| | | | | | | | | | 0| 32767| 0
Alarm air temp. B|  | 0-X| U34|  |  |  |  |  | | |  |  | -200.0 °C| 200.0 °C| 0.0 °C
Display readout 2|  | 0-X| U35| | | | | | | |  | | -200.0 °C| 200.0 °C| 0.0 °C
Fan ECO| 0=OFF, 1=ON| 0-X| U37|  |  |  |  |  |  |  |  | | 0| 1| 0
Network status|  | 0-X| U45| | | | | | | | | | 0 %| 100 %| 0%
Drain valve| 0=OFF, 1=ON| 0-X| U55|  |  |  |  | |  |  |  |  | 0| 1| 0
Humidity sensor|  | 0-X| U57|  |  |  |  |  |  |  | |  | 0 %| 100 %| 0%
Humidifier| 0=OFF, 1=ON| 0-X| U58|  |  |  |  |  |  |  | |  | 0| 1| 0
Rail heat PWM|  | 0-X| U59| | | | | | | | | | 0 %| 100 %| 0%
Food temperature A|  | 0-X| U72| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Defrost sensor temperature A|  | 0-X| U73| | | | | | | | | | -200.0 °C| 200.0 °C| 0.0 °C
Liquid line solenoid| 0=OFF, 1=ON| 0-X| U95| | | | | | |  | | | 0| 1| 0
Dehumidifier| 0=OFF, 1=ON| 0-X| U96|  |  |  |  |  |  |  | *|  | 0| 1| 0
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fault message

In an error situation, the alarm LED on the front will be on and the alarm relay will be activated (depending on priority). If you push the alarm button for 3 seconds you can see the alarm report in the display.

(Alarm priorities can be changed. See the User Guide.) Here are the messages that may appear:

Code| Alarm text| Description
E01| Hardware failure| The controller has a hardware failure
E06| Clock lost time| The clock has lost valid time
E20| Pe Evap. pressure A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E24| S2 Gas outlet A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E25| S3 Air ON evap. A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E26| S4 Air OFF evap. A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E27| S5 Evaporator A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E28| S6 product temp. A – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E34| S3 Air ON evap. B – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E37| S5 Evaporator B – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
E59| Humidity sensor – Sensor error| The sensor signal is out of range. Please check the sensor for correct operation
A01| High-temperature alarm A| The alarm temperature has been above the max alarm limit for a longer period than the set alarm delay.
A02| Low-temperature alarm A| The alarm temperature has been below the minimum alarm limit for a longer period than the set alarm delay.
A04| Door open alarm| The door has been open for a too long time
A05| Max defrost hold time exceeded| The controller has been waiting longer time than permitted after a co-ordinated defrost.
A11| Refrigerant not selected| The refrigerant has not been selected hence control can not be initiated
A13| S6 high product temperature A| The S6 Product temperature has been above the max alarm limit for a longer period than the set alarm delay.
A14| S6 low product temperature A| The S6 Product temperature has been below the minimum alarm limit for a longer period than the set alarm delay.
A15| DI alarm 1| Alarm signal from digital input signal
A16| DI alarm 2| Alarm signal from digital input signal
A45| The main switch set OFF| The controller main switch has been set to either Stop or manual control. Alternatively, a digital input set up for the “main switch” function, has stopped the control
A59| Case in cleaning mode| A case cleaning operation has been started on a case
A70| High-temperature alarm B| The alarm temperature has been above the max alarm limit for a longer period than the set alarm delay.
A71| Low-temperature alarm B| The alarm temperature has been below the minimum alarm limit for a longer time than the set alarm delay.
AA2| CO2 leak detected| CO2 is leaking from the refrigeration system
AA3| Refrigerant leak detected| Refrigerant is leaking from the refrigeration system
a02| High humidity alarm| The humidity level is too high
a03| Low humidity alarm| The humidity level is too low
a04| Wrong IO configuration| Inputs and outputs have not been configured correctly
X02| The evaporator is icing up| The adaptive defrost function has detected heavy ice formation on the evaporator.
X03| Flash gas detected| The adaptive defrost function has detected heavy flash gas in front of the injection valve
Z01| Max defrost time exceeded A| The last defrost cycle stopped on time instead of the set temperature
A34| Fan alarm| Alarm from digital input monitoring function
A43| Valve driver alarm| Alarm from digital input monitoring function
Data communication

The importance of individual alarms can be defined with a setting. The setting must be carried out in the group “Alarm destinations”

For additional information, please see the respective User Guide.

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