Cooling/Heating Tips - Rheem P16 Series Installation Instructions Manual

DISCHARGE
SYSTEM
PRESSURE
PROBLEM
Overcharge
Undercharge
Liquid Restriction
(Drier)
Low Indoor Airfl ow
Dirty Outdoor Coil
Low Outdoor
Ambient Temperature
Ineffi cient
Compressor
Indoor TXV Feeler
Bulb Charge Lost
Poorly Insulated
Indoor Sensing Bulb
DISCHARGE
SYSTEM
PRESSURE
PROBLEM
Overcharge
Undercharge
Liquid Restriction
(Drier)
Low Outdoor Airfl ow
Dirty Indoor Coil
Low Indoor Ambient
Temperature
Ineffi cient
Compressor
Outdoor TXV Feeler
Bulb Charge Lost
Poorly Insulated
Outdoor Sensing
Bulb
COOLING MODE
TROUBLESHOOTING TIPS
SUCTION
PRESSURE
High High
Low Low
Low Low
Low Low
High High
Low Low
Low High
Low Low
High High
HEATING MODE
TROUBLESHOOTING TIPS
SUCTION
PRESSURE
High High
Low Low
Low Low
Low Low
High High
Low Low
Low High
Low Low
High High
DIAGNOSTICS
INDICATORS
SUPERHEAT
SUBCOOLING
Normal:
Normal: See
5°–15°F
Charging Chart
[-15° – -9°C]
Low High
High Low
High High
Low Low
Low Low
High High
High High
High High
Low Low
INDICATORS
SUPERHEAT
SUBCOOLING
Normal:
Normal: See
5°–15°F
Charging Chart
[-15° – -9°C]
OK High
OK or High Low
High High
Low Low
Low Low
OK High
High High
High High
Low Low
COMPRESSOR
AMPS
High
Low
Low
Low
High
Low
Low
Low
High
COMPRESSOR
AMPS
High
Low
Low
Low
High
Low
Low
Low
High
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