Rheem RA1460AJ1NA Installation Instructions Manual page 34

DIAGNOSTICS
Service Analyzer Charts
COMPRESSOR OVERHEATING (cont.)
SYMPTOM
Short cycling of
compressor (cont�)
Faulty Compressor
Valves
ELECTRICAL
SYMPTOM
Voltage present on
load side of com-
pressor contactor
and compressor
won't run
Voltage present on
line side of com-
pressor contactor
only
No voltage on line
side of compressor
contactor
Improper voltage
FLOODED STARTS
SYMPTOM
Liquid in the com-
pressor shell
Too much liquid in
system
34
POSSIBLE CAUSE
Low charge
Low evaporator airflow
Faulty run capacitor
Faulty internal overload
Fast equalization/Low pressure difference
POSSIBLE CAUSE
Compressor start components
Run capacitor
Internal overload
Compressor windings
Thermostat
Compressor control circuit
Blown fuses or tripped circuit breaker
Improper wiring
High voltage
Low voltage
Single Phasing (3 phase)
POSSIBLE CAUSE
Faulty or missing crankcase heater
Incorrect piping
Overcharge
CHECK OR REMEDIES
Check system charge�
Dirty coil
Dirty filter
Duct too small or restricted
Replace�
Replace compressor�
Replace compressor and examine system to
locate reason�
CHECK OR REMEDIES
Check start capacitor�
Check potential relay�
Check with ohmmeter
Allow time to reset�
Check for correct ohms�
Check for control voltage to contactor coil�
High-pressure switch
Low-pressure switch
Ambient thermostat
Solid-state protection control or internal thermal sensors
Compressor timed off/on control or interlock
Check for short in wiring or unit�
Recheck wiring diagram�
Wrong unit
Power supply problem
Wrong unit
Power supply problem
Wiring undersized
Loose connections
Check incoming power and fusing�
CHECK OR REMEDIES
Replace crankcase heater�
Check piping guidelines�
Check and adjust charge�