Thermostat Circuit Fault Finding - Chart 1.1 - Rheem 55027500 Service Instructions Manual

Thermostat Circuit Fault Finding - Chart 1.1

1.1
Is the
evaporator fan
running?
YES
Test 6
Is there
240 volts to the
compressor?
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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Are the
NO thermostat contacts
closed?
YES
Has the
compressor overload
tripped?
NO
Is the
resistance of
YES
the compressor
correct?
the capacitor
failed?
NO
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
Test 2 - 550275 and 551275
Test 2A - 551275/A
NO
Isolate power
Test 3A
YES
2.1
Test 3
Is the
resistance of
the fan motor
correct?
YES
Is the
fan motor
seized?
NO
Test 4
NO
YES
Test 5
Has
YES
14
Replace thermostat
1.2
NO
Replace fan motor and reset
compressor over temperature
cut out
YES
Fault in electrical wiring
Locate and repair
Replace compressor
1.5
NO
Replace capacitor and reset
overload
Fault in electrical wiring
Locate and repair