Danfoss AK-CC 750 series User Manual

88 RS8GM222 © Danfoss 10-2014 AK-CC 750 - 080Z0130 & 080Z0139
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 o 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
Pc sensor error High Pc sensor error Pressure transmitter signal for condensing pressure 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
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 ow alarm A,B,C,D Low AD - Case X - Air ow reduced The air ow at the evaporator is greatly reduced – either as a consequence of severe ice formation, a
fan fault or other obstruction.
AD – Case A not de-
frosted (B,C,D)
Low AD - Case X not defrosted The air ow 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
AD – Flash gas evapora.
A,B,C,D
Low AD – Flash gas detect A,B,C,D Flash gas has been detected at the valve for a relatively long time

Danfoss AK-CC 750 series Specifications

General

Brand	Danfoss
Model	AK-CC 750 series
Category	Controller
Language	English