Symptoms
Ice accumulating on ceiling around evaporator or on fan guard’s venturi or blades
Possible Causes
- Defrost duration is too long
- Fan delay after defrost period
- Defective defrost thermostat or timer
- Too many defrosts
Possible Corrective Steps
- Adjust defrost termination thermostat
- Defective defrost thermostat or not adjusted properly
- Replace defective component
- Reduce number of defrosts
