Danfoss AK-CC 550A, User Manual, Page: 25 / 36

AK-CC 550A Manual RS8FS402 © Danfoss 2016-03 25
Fault message
In an error situation the LED’s on the front will flash and the alarm relay will be activated. If you push the top button in this situation you can see the
alarm report in the display.
There are two kinds of error reports - it can either be an alarm occurring during the daily operation, or there may be a defect in the installation.
A-alarms will not become visible until the set time delay has expired.
E-alarms, on the other hand, will become visible the moment the error occurs.
(An A alarm will not be visible as long as there is an active E alarm).
Here are the messages that may appear:
Code / Alarm text via data
communication
Description Alarm relay groups (P41)
A1/--- High t.alarm
High temperature alarm
1
A2/--- Low t. alarm
Low temperature alarm
2
A4/--- Door alarm
Door alarm
8
A5/--- Max hold time
The ”o16” function is activated during a coordinated defrost
16
A10/--- Inject prob.
Control problem
64
A11/--- No Rfg. sel.
No refrigerant selected
64
A13/--- High temp S6 Temperature alarm. High S6 1
A14/--- Low temp S6 Temperature alarm. Low S6 2
A15/--- DI1 alarm DI1 alarm 8
A16/--- DI2 alarm DI2 alarm 8
A45/--- Standby mode Standby position (stopped refrigeration via r12 or DI input) -
A59/--- Case clean Appliance cleaning. Signal from DI input -
--- AD fault Error in the adaptive defrost function 16
--- AD Iced Evaporator is iced up. Reduction of air flow 16
--- AD not defr. Defrost of evaporator is not satisfactory 16
--- AD flashgas Flash gas is formed at the valve 16
E1/--- Ctrl. error Faults in the controller 32
E6/--- RTC error Check clock 32
E20/--- Pe error Error on pressure transmitter Pe 64
E24/--- S2 error Error on S2 sensor 4
E25/--- S3 error Error on S3 sensor 4
E26/--- S4 error Error on S4 sensor 4
E27/--- S5 error Error on S5 sensor 4
E28/--- S6 error Error on S6 sensor 4
E34/--- S3 error B Error on S3B sensor (appl. 10 only) 4
E37/--- S5 error B Error on S5B sensor 4
---/--- Max Def.Time Defrost stopped based on time instead of, as wanted, on temperature 16
Data communication
The importance of individual alarms can be defined with a setting. The setting must be carried out in the group "Alarm destinations"
Settings from
System manager
Settings from
AKM (AKM destination)
Log Alarm relay Send via
Network
Non High Low-High
High 1 X X X X
Middle 2 X X X
Low 3 X X X
Log only X
Disabled