Rheem RA17 Series User Manual

53
Diagnostics
DIAGNOSTICS
COOLING MODE
TROUBLESHOOTING TIPS
SYSTEM
PROBLEM
INDICATORS
DISCHARGE
PRESSURE
SUCTION
PRESSURE
SUPERHEAT
.ORMALn&
;n#=
SUBCOOLING
.ORMAL3EE
Charging Chart
COMPRESSOR
AMPS
Overcharge
High High Low High High
Undercharge
Low Low High Low Low
Liquid Restriction
(Drier)
Low Low High High Low
Low Indoor Airflow
Low Low Low Low Low
Dirty Outdoor Coil
High High Low Low High
Low Outdoor
Ambient Temperature
Low Low High High Low
Inefficient
Compressor
Low High High High Low
Indoor EEV Feeler
Bulb Charge Lost
Low Low High High Low
Poorly Insulated
Indoor Sensing Bulb
High High Low Low High
ELECTRONIC EXPANSION VALVES (cont.)
SYMPTOM POSSIBLE CAUSE REMEDY
Superheat and
suction pressure
uctuate valve is
hunting)
Oversized EEV Install correct EEV
Unequal refrigerant ow through evaporator
circuit
Ensure suction line thermistor is in correct location in a
clean section of copper pipe.
Moisture freezing and partially blocking EEV ecover refrigerant, change lter-drier, evacuate system,
and recharge.
Valve does not
regulate at all
External equalizer liine not connected or line
plugged
Connect equalizer line in proper location, or remove any
blockage.
Sensing bulb lost its operating charge Replace TEV.
Valve body damaged during soldering or by
improper installation
Replace the TEV.
Service Analyzer Charts

Rheem RA17 Series Specifications

General

Brand	Rheem
Model	RA17 Series
Category	Heat Pump
Language	English