www.DaikinApplied.com 56
Vertical Stack WSHP • IM 986-11
t
roubleshooting
Table 24: Troubleshooting refrigeration circuit
Symptom
Head
Pressure
Suction
Pressure
Compressor
Amp Draw
Super Heat
Subcooling
Air Temp
Differential
Water (Loops)
Temp
Differential
Safety Lock
Out
Charge
Low
Low
Low
High
Low
Low
Low
Low Pressure
Undercharge System
(Possible Leak)
Overcharge System
High
High
High
Normal
High
Normal
Low
Normal
High Pressure
Low Air Flow Heating
High
High
High
High
Normal
Low
High
Low
High Pressure
Low Air Flow Cooling
Low
Low
Low
Low
Normal
High
High
Low
Low Temp
Low Water Flow
Heating
Low
Normal
Low
Normal
Low
Low
High
Low
High
Low Temp
Low Water Flow
Cooling
High
High
High
High
Low
Low
High
High Pressure
High Air Flow Heating
Low
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
Normal
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
Normal
Low
High
High
Low
Low
Summary of Contents for VHF
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