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5 SERIES OPTIHEAT 504W11 INSTALLATION MANUAL
Troubleshooting Guideline for Refrigerant Circuit
The chart below will assist in determining if measurements taken at the unit are within factory specifications and aid in
accurate diagnosis (SYMPTOM) and repair. The chart is general in nature and represents whether a symptom would result in
normal, high, or low readings from the typical operating range.
Symptom
Head
Pressure
Suction
Pressure
Compressor
Amp Draw
Superheat
Subcooling
Water Temp.
Differential
Under Charged System (Possible Leak)
Low
Low
Low
High
Low
Low
Over Charged System
High
High
High
Normal
High
Normal
Low Water Flow Evaporator
Low/Normal Low/Normal
Low
Low
High
High
Low Water Flow Condensor
High
High
High
High
Low
High
High Water Flow Evaporator
Normal
Low
Normal
High
Normal
Low
High Water Flow Condensor
Low
Low
Low
Low
High
Low
Restricted TXV (Check Service Advisory)
High
Low
Normal/Low
High
High
Low
Insufficient Compressor
(Possible Bad Valves)
Low
High
Low
High
Normal/High
Low
TXV - Bulb Loss of Charge
Low
Low
Low
High
High
Low
Scaled Coaxial Heat Exchanger Evaporator
Low
Low
Low
Normal/Low
High
Low
Scaled Coaxial Heat Exchanger Condensor
High
High
High
Normal/Low
Low
Low
Restricted Filter Drier
Check temperature difference (delta T) across filter drier.
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Summary of Contents for 5 Series 504W11 OptiHeat
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