Wiring - Rheem RP13 Installation Instructions Manual

Service Analyzer Charts
COMPRESSOR OVERHEATING (cont.)
SYMPTOM
Short cycling of Low charge
compressor (cont�)
Low evaporator airflow
Faulty run capacitor
Faulty internal overload
Faulty Compressor Fast equalization/Low pressure difference
Valves
ELECTRICAL
SYMPTOM
Voltage present on Compressor start components
load side of com-
pressor contactor
and compressor
won't run
Run capacitor
Internal overload
Compressor windings
Voltage present on Thermostat
line side of com-
pressor contactor Compressor control circuit
only
No voltage on line Blown fuses or tripped circuit breaker
side of compressor
contactor Improper wiring
Improper voltage High voltage
Low voltage
Single Phasing (3 phase)
FLOODED STARTS
SYMPTOM
Liquid in the com- Faulty or missing crankcase heater
pressor shell
Too much liquid in Incorrect piping
system
Overcharge
POSSIBLE CAUSE
POSSIBLE CAUSE
POSSIBLE CAUSE
DIAGNOSTICS
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�
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