96
RS8HP102 © Danfoss 2018-09
AK-CC 750A
Alarm texts
Setting of priority
Default
priority
Alarm text
Description
Temperature alarms
High air temp. A
High
High air temp. (A,B,C,D)
The air temperature has been above the high alarm limit for longer time than set delay
Low air temp. A
High
Low air temp. (A,B,C,D)
The air temperature has been below the low alarm limit for longer time than set delay
Frost protect A
High
Frost protection, too low S4
(A,B,C,D)
The air off temperature (S4) is below the set frost protection limit
High Prod. temp. A
High
High Prod. temp. (A,B,C,D)
The product temperature has been above the high alarm limit for longer time than set delay
Low prod. temp. A
High
Low prod. temp. (A,B,C,D)
The product temperature has been below the low alarm limit for longer time than set delay
Same for B,C,D
Sensor errors
Pe sensor error
Low
Po sensor error
Pressure transmitter signal for evaporating pressure faulty
S2A sensor error
High
S2A sensor error (B,C,D)
S2A temp. sensor signal faulty
S3A sensor error
High
S3A sensor error (B,C,D)
S3A temp. sensor signal faulty
S4A sensor error
High
S4A sensor error (B,C,D)
S4A temp. sensor signal faulty
S5-1A sensor error
High
S5-1A sensor error (B,C,D)
S5-1A temp. sensor signal faulty
S5-2A sensor error
High
S5-2A sensor error (B,C,D)
S5-2A temp. sensor signal faulty
Prod. sensor error A
High
Product temp. A sensor error
(B,C,D)
Product temp. sensor signal faulty
Same for B,C,D
Saux1 sensor error
High
Saux1 sensor error
Saux1 temp. sensor signal faulty
Saux2 sensor error
High
Saux2 sensor error
Saux2 temp. sensor signal faulty
Saux3 sensor error
High
Saux3 sensor error
Saux3 temp. sensor signal faulty
Saux4 sensor error
High
Saux4 sensor error
Saux4 temp. sensor signal faulty
Pc sensor error
High
Pc sensor error
Pressure transmitter signal for condensing pressure faulty
Paux1 sensor error
High
Paux1 sensor error
Paux1 pressure transmitter signal faulty
Paux2 sensor error
High
Paux2 sensor error
Paux2 pressure transmitter signal faulty
Paux3 sensor error
High
Paux3 sensor error
Paux3 pressure transmitter signal faulty
Various alarms
Standby mode
Medium
Control stopped,
MainSwitch=OFF
The control has been stopped via the setting ”Main switch” = ON or via the external Main switch input
Refrigerant changed
Low
Refrigerant changed
The refrigerant setting has been changed
Refrigerant
leak alarm
Refrigerant leak
A signal is being received from a leak detector
(The alarm relay on AK-CC 750A will not be activated)
Case cleaning
High
Case cleaning initiated
A case cleaning has been initiated
Door open pre alarm
Low
Door open pre alarm
The door has been open for longer time than 75% of the set alarm delay
Door open alarm
Medium
Door open alarm
The door has been open for longer time than set alarm delay
Injection problem A, B, C, D
Medium
Injection problem (A,B,C,D)
The AKV valve can not control the superheat of the evaporator
Max def period A,B,C,D
Low
Max defrost time exceeded
(A,B,C,D)
The last defrost cycle has terminated on time instead of temperature
Max fan del exceeded
A,B,C,D
Low
Max fan del ay time exceeded
(A,B,C,D)
The fans have been started on time instead of temperature after a defrost
Max hold time A,B,C,D
Low
Max defrost hold time
(A,B,C,D)
After a defrost cycle the evaporator has restarted cooling as it did not get a release signal via the defrost co-
ordination setup in the network manager (AKA gateway)
Air flow alarm A,B,C,D
Low
AD - Case X - Air flow reduced
The air flow at the evaporator is greatly reduced – either as a consequence of severe ice formation, a fan fault or
other obstruction.
AD – Case A not defrosted
(B,C,D)
Low
AD - Case X not defrosted
The air flow is continuously reduced after defrost has been carried out
AD – Fault case A,B,C,D
Low
AD - Sensor error A,B,C,D
Tuning problem in adaptive defrost