Danfoss AK-CC 550B, User Manual

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AK-CC 550B Manual RS8GL302 © Danfoss 2016-03 19
If you wish to see the temperature at the defrost sensor, push the controller’s lowermost
button. (May be changed to another function in o92.)
Defrost temp.
If you wish to start an extra defrost, push the controller’s lowermost button for four
seconds.
You can stop an ongoing defrost in the same way
Def Start
Here you can start a manual defrost
Hold After Def
Shows ON when the controller is
operating with coordinated defrost.
Disable def.
Defrost in progress can be stopped
Defrost State
Status on defrost
1= pump down / defrost
Parameter for cooling function
Max. value for the superheat reference
n09 Max SH
Min. value for the superheat reference
n10 Min SH
MOP temperature
If no MOP function is required, select pos. OFF
n11 MOP temp
(A value of 15 corresponds to OFF)
AKV valve’s time period in seconds
Should only be set to a lower value if it is a decentralised plant and the suction
pressure fluctuates a lot and in line with the opening of the AKV valve.
n13 AKV Period
Fan Fan control
Fan stop temperature
The function stops the fans in an error situation, so that they will not provide power to
the appliance. If the defrost sensor registers a higher temperature than the one set here,
the fans will be stopped. There will be re-start at 2 K below the setting.
The function is not active during a defrost or start-up after a defrost.
With s50°C the function is interrupted.
F04 FanStopTemp.
Pulse operation of fan
0: No pulse operation
1: Pulse operation when the thermostat does not call for refrigeration
2: Pulse operation when the thermostat does not call for refrigeration, but only during
night operation
F05 FanPulseMode
Pulse operation period for fan
Here the overall pulse time is set. The sum of ON-to and OFF time.
F06 Fan cycle
ON time for fan
Here the % part of the period the fans are to be in operation is set.
F07 Fan ON %
The LED on the controller’s front will indicate whether a defrost is going on. u59 Fan Relay
Here you can read the fan relay status,
or force-control the relay in “Manual
control” mode.
Internal defrosting schedule/clock function
(Not used if an external defrosting schedule is used via data communication.)
Up to six individual times can be set for the defrost start throughout the day.
Defrost start, hour setting t01-t06
Defrost start, minute setting (1 and 11 belong together, etc.)
When all t01 to t16 equal 0 the clock will not start defrosts.
t11-t16
Real-time clock::
Setting the clock is only necessary when there is no data communication.
In the event of a power failure of less than four hours, the clock function will be saved.
Clock: Hour setting
t07
Clock: Minute setting t08
Clock: Date setting t45
Clock: Month setting t46
Clock: Year setting t47