McQuay MHC Standard Range User Manual

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Troubleshooting Refrigeration Circuit
Charge
Undercharge System Low Low Low High Low Low Low Low Pressure
(Possible Leak)
Overcharge System High High High Normal High Normal High Pressure
Low Air Flow Heating High High High Low High Low High Pressure
Low Air Flow Cooling Low Low Low High High Low Low Temp
Low Water Flow Heating L
ow Low High Low High Low Temp
Low Water Flow Cooling High High High High Low Low High High Pressure
High Air Flow Heating L
ow Low Low Low High Low Low Low Temp
High Air Flow Cooling Low High Normal High Low Low Normal High Pressure
High Water Flow Heating N
ormal Low Normal High Normal Normal Low High Pressure
High Water Flow Cooling Low Low Low Low High Normal Low Low Temp
TXV Restricted High Low High High Low Low
Low
Normal
Normal
Low
High
Normal
Low
Normal
Low
Normal
Normal
Low
Air Water Safety
Head Suction Compressor Super
Temp (loops) Temp Lock
Symptom
Pressure Pressure Amp Draw Heat
Subcooling
Differential Differential Out

McQuay MHC Standard Range Specifications

General

Brand	McQuay
Model	MHC Standard Range
Category	Heat Pump
Language	English