Fault Message - Danfoss AK-CC55 Multi Coil User Manual

AK-CC55 Multi Coil
Function Description
MC Defrost start Master control signal for starting a defrost. At adap-
tive defrost the defrost might be skipped if the de-
frost is not needed
MC Defrost state Read out the actual state of the defrost
MC Hold after de- Master control signal used for co-ordinated defrost
frost control to hold cabinets from returning to normal re-
frigeration after a defrost until all cabinets have termi-
nated defrost
MC Stop defrost Master control signal used to prevent a defrost start in
a controller.
MC Light signal Master control signal for control of light via a data
communication signal from the system manager
MC Actual dewpoint Master control signal sending the actual measured
dewpoint from the system manager to the controller
over the network.
MC Po load factor
MC Key/Bluetooth Master control signal that will lock down all Bluetooth
lock data communication and optionally also the opera-
tion of the display keys (depend upon selection in
P89 Display keyboard lock)
MC Min. delta T Required minimum delta temperature across evapo-
rator (S3 - Te) in order to keep the air temperature at
the actual setpoint
No. of case sections No. of sections in the case

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 Table 39: Alarm relay
Code Alarm text
E01 Hardware failure
E06 Clock lost time
E20 Pe Evap. pressure A - Sensor error
E24 S2 Gas outlet A - Sensor error
E26 S4 Air OFF evap. A - Sensor error
E27 S5 Evaporator A - Sensor error
E37 S5 Evaporator B - Sensor error
E59 Humidity sensor - Sensor error
E60 S4 Air OFF evap. B - Sensor error
E61 S4 Air OFF evap. C - Sensor error
E62 S2 Gas outlet B - Sensor error
E63 S2 Gas outlet C - Sensor error
A01 High temperature alarm A
A02 Low temperature alarm A
A04 Door open alarm
A05 Max defrost hold time exceeded
A11 Refrigerant not selected
A15 DI alarm 1
A16 DI alarm 2
A45 Main switch set OFF
A59 Case in cleaning mode
A70 High temperature alarm B
A71 Low temperature alarm B
CO leak detected
AA2
2
AA3 Refrigerant leak detected
a02 High humidity alarm
a03 Low humidity alarm
a05 High temperature alarm C
a06 Low temperature alarm C
© Danfoss | Climate Solutions | 2022.08
Values
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
priorities.) Here are the messages that may appear:
Description
The controller has a hardware failure
Clock has lost valid time
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
Sensor signal is out of range. Please check the sensor for correct operation
The alarm temperature has been above the max alarm limit for a longer time period than the set alarm delay.
The alarm temperature has been below the min alarm limit for a longer time period than the set alarm delay.
The door has been open for a too long time
The controller has been waiting longer time than permitted after a co-ordinated defrost.
The refrigerant has not been selected hence control can not be initiated
Alarm signal from digital input signal
Alarm signal from digital input signal
The controller manin switch has been set to either Stop or Manaual control. Alternatively a digital input set up for
"main switch" function, has stopped control
A case cleaning operation has been started on a case
The alarm temperature has been above the max alarm limit for a longer time period than the set alarm delay.
The alarm temperature has been below the min alarm limit for a longer time period than the set alarm delay.
CO is leaking from the refrigerantion system
2
Refrigerant is leaking from the refrigeration system
The humidity level is too high
The humidity level is too low
The alarm temperature has been above the max alarm limit for a longer time period than the set alarm delay.
The alarm temperature has been below the min alarm limit for a longer time period than the set alarm delay.
Code Short name
x13 --- MC def.start
x14 --- DefrostState
x11 --- HoldAfterDef
x12 --- Disable def.
o39 o39 Light remote
x03 --- Act.DewPoint
x83 --- Load factor
x33 --- Key/BT Lock
y04 --- Min Delta T
z05 --- NoOfEvap
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