Danfoss ERC 102 User Manual

52
Problem Probable cause Remedy
Compressor does not start Waiting for compressor delay timer
Defrost in progress
Line voltage to compressor too low
or too high
Check CoP->CSt
Check CoP ->Pot /Pod
Check dEF ->dit, dot
Check CoP->uLi, uLo, uHi
Fan does not start Door is open or door contact is defective Fan stops when door is opened
Check that door contact is ok
Defrost does not start Controller in pull-down mode Defrost might be delayed during pull-down
Check parameter Pud->Pdi
Alarm does not sound Alarm delayed Check ALA->Htd, Abd
Check Pud->Pdd
Display brightness is weak Ambient light sensor broken Replace sensor
Shift between Eco and Normal mode does
not happen on ambient light change
Ambient light sensor broken
or light level not set properly
Check Eng->SLd, SLn
E01, E02 or E03 is shown on display E01: Sensor S1 defective
E02: Sensor S2 defective
E03: Sensor S3 defective
Replace sensor
Display alternates between Con and
temperature
Condenser too hot Clean condenser
Check Con ->CAL, CbL
Display alternates between Hi and
temperature
Temperature too high Check ALA->HAt
Display alternates between Lo and
temperature
Temperature too low Check ALA -> LAt
Display shows dEf Defrost in progress Check diS ->SdF
ERC 102 Reference manual – APPENDIX III: TROUBLE SHOOTING
APPENDIX III: TROUBLESHOOTING

Danfoss ERC 102 Specifications

General

Brand	Danfoss
Model	ERC 102
Category	Controller
Language	English