Rheem A17 Series Installation Instructions Manual page 44

10.0 DIAGNOSTICS AND TROUBLESHOOTING
10.7 Service Analyzer Chart (cont.)
COMPRESSOR OVERHEATING (Cont.)
SYMPTOM
Distributor tube
Low charge
Short cycling of
Low evaporator airflow
compressor (cont.)
Faulty run capacitor
Faulty internal overload
Fast equalization/Low pressure difference
Faulty compressor
ELECTRICAL
SYMPTOM
Compressor starts components
Voltage present on
load side of com-
pressor contactor Run capacitor
and compressor
Internal overload
won't run
Compressor windings
Thermostat
Compressor control circuit
Voltage present on
line side of com-
pressor contactor
only
No voltage on line Blown fuses or tripped circuit breaker
side of compressor
Improper wiring
contactor
High voltage
Low voltage
Improper voltage
FLOODED STARTS
SYMPTOM
Liquid in the com- Faulty or missing crankcase heater
pressor shell
Incorrect piping
Too much liquid in
system
Overcharge
44
POSSIBLE CAUSE
POSSIBLE CAUSE
POSSIBLE CAUSE
CHECK OR REMEDIES
Restricted with foreign matter
Kinked
I.D. reduced from previous compressor failure
Check system charge
Dirty coil
Dirty filter
Duct too small or restricted
Replace capacitor
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 rest
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 sensor
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 OR REMEDIES
Replace crankcase heater
Check piping guidelines
Check and adjust charge