Danfoss AK-CC 550 - Monitoring and Diagnostics; Operating Status Codes

24 Manual RS8EN502 © Danfoss 02-2010 AK-CC 550
*)EmergencycoolingwilltakeeectwhenthereislackofsignalfromadenedS3orS4sensor.Theregulationwillcontinuewitharegisteredaverage
cutinfrequency.Therearetworegisteredvalues–onefordayoperationandonefornightoperation.
Operating status (Measurement)
Thecontrollergoesthroughsomeregulatingsituationswhereitisjustwaitingfor
thenextpointoftheregulation.Tomakethese“whyisnothinghappening”situations
visible,youcanseeanoperatingstatusonthedisplay.Pushbriey(1s)theupper
button.Ifthereisastatuscode,itwillbeshownonthedisplay.Theindividualstatus
codeshavethefollowingmeanings:
Ctrl. state:
(Showninallmenudisplays)
Normal regulation S0 0
Waitingforendofthecoordinateddefrost S1 1
Whenthecompressorisoperatingitmustrunforatleastxminutes. S2 2
Whenthecompressorisstopped,itmustremainstoppedforatleastxminutes. S3 3
Theevaporatordripsoandwaitsforthetimetorunout S4 4
Refrigeration stopped by main switch. Either with r12oraDI-input S10 10
Refrigeration stopped by thermostat S11 11
Defrost sequence. Defrost in progress S14 14
Defrost sequence.Fandelay—waterattachestotheevaporator S15 15
RefrigerationstoppedduetoopenONinputorstoppedregulation S16 16
Doorisopen.DIinputisopen S17 17
Melt function in progress. Refrigeration is interrupted S18 18
Modulating thermostat control S19 19
Emergency cooling due to sensor error S20 20
Regulationproblemintheinjectionsfunction S21 21
Start-upphase2.Evaporatorbeingcharged S22 22
Adaptivecontrol S23 23
Start-up phase 1. Signal reliability from sensors is controlled S24 24
Manual control of outputs S25 25
No refrigerant selected S26 26
Case cleaning S29 29
Forcedcooling S30 30
Delay on outputs during start-up S32 32
Heatfunctionr36isactive S33 33
Other displays:
The defrost temperature cannot be displayed. There is stop based on time non
Defrostinprogress/Firstcoolingafterdefrost -d-
Passwordrequired.Setpassword PS
Regulationisstoppedviamainswitch OFF