Manitowoc

Hot Gas Valve AnalysisThe valve can fail in two positions:• Valve will not open in the harvest cycle.• Valve remains open during the freeze cycle.VALVE WILL NOT OPEN IN THE HARVEST CYCLEAlthough the circuit board has initiated a harvest cycle,the evaporator temperature remains unchanged fromthe freeze cycle.! CautionCoil must be seated 100% on solenoid to functioncorrectly. Inst all coil with a twisting motion toproperly seat.VALVE REMAINS OPEN IN THE FREEZE CYCLE:Symptoms of a hot gas valve remaining partially openduring the freeze cycle can be similar to symptoms ofan expansion valve, float valve or compressorproblem. Symptoms are dependent on the amount ofleakage in the freeze cycle.A small amount of leakage will cause increased freezetimes and an ice fill pattern that is “Thin at the Outlet”,but fills in at the end of the cycle.As the amount of leakage increases the length of thefreeze cycle increases and the amount of ice at theoutlet of the evaporator decreases.Refer to the Parts Manual for proper valve application.If replacement is necessary, use only “original”Manitowoc replacement parts.122 Part Number 80-01111-9 7/10