Danfoss AK-CC55 Compact - Fault Message

Function
Description
Values
Code
Short name
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
0=OFF, 1=ON
x13
--- MC def.start
MC Defrost state
Read out the actual state of the defrost
0=OFF, 1=ON
x14
--- DefrostState
MC Hold after de-
frost
Master control signal used for co-ordinated defrost
control to hold cabinets from returning to normal re-
frigeration after a defrost until all cabinets have termi-
nated defrost
0=OFF, 1=ON
x11
--- HoldAfterDef
MC Stop defrost
Master control signal used to prevent a defrost start in
a controller.
0=OFF, 1=ON
x12
--- Disable def.
MC Light signal
Master control signal for control of light via data com-
munication signal from system manager
0=OFF, 1=ON
o39
o39 Light remote
MC Actual dewpoint
Master control signal sending the actual measured
dew point from system manager to controller over
the network.
x03
--- Act.DewPoint
MC Po load factor
x83
--- Load factor
MC Key/Bluetooth
lock
Master control signal that will lock down all Bluetooth
data communication and optionally also the opera-
tion of the display keys (depend upon selection in
P89 Display keyboard lock).
0=OFF, 1=ON
X33
--- BT lock
MC Min delta T
Required minimum delta temperature across evapo-
rator (S3 - Te) in order to keep the air temperature at
the actual set point
y04
--- Min Delta T
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 Table 35: Alarm relay priorities.) Here are the messages that may appear:
Table 42: Fault message
Code
Alarm text
Description
E01
Hardware failure
The controller has a hardware failure
E06
Clock lost time
Clock has lost valid time
E20
Pe Evap. pressure A - Sensor error
Sensor signal is out of range. Please check the sensor for correct operation
E24
S2 Gas outlet A - Sensor error
Sensor signal is out of range. Please check the sensor for correct operation
E25
S3 Air ON evap. A - Sensor error
Sensor signal is out of range. Please check the sensor for correct operation
E26
S4 Air OFF evap. A - Sensor error
Sensor signal is out of range. Please check the sensor for correct operation
E27
S5 Evaporator A - Sensor error
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 time period than the set alarm de-
lay.
A02
Low temperature alarm A
The alarm temperature has been below the min alarm limit for a longer time period than the set alarm de-
lay.
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
A15
DI alarm 1
Alarm signal from digital input signal
A16
DI alarm 2
Alarm signal from digital input signal
A45
Main switch set OFF
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
A59
Case in cleaning mode
A case cleaning operation has been started on a case
AA2
CO
2
leak detected
CO
2
is leaking from the refrigerantion system
AA3
Refrigerant leak detected
Refrigerant is leaking from the refrigeration system
a04
Wrong IO
conguration
Inputs and outputs have not been
congured correctly

NOTE:
Data communication
The importance of individual alarms can be dened with a setting. The setting must be carried out in the group
"Alarm destinations"
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AK-CC55 Compact