Daikin VHF - Refrigeration Circuit Troubleshooting

www.DaikinApplied.com 56 Vertical Stack WSHP • IM 986-11
troubleshooting
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