78 System frozen and not free in time - Defreezing Mode and Detection Errors (pressure build-up in detection mode failed) - P20C5 Pump module - Internal heating Open circuit
System frozen and not free in time - Defreezing Mode and Detection Errors (pressure build-up in detection mode failed)–P20C5 Pump module -Internal heating -open circuit
Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.