Amana GPCM3 Series Service And Troubleshooting page 44

Troubleshooting
No Heat
24v between
No
C & W at
thermostat?
Yes
208/240v
No
at heater
kit
contactor?
Yes
No
24v at
contactor coil?
Yes
No
Are contactor
contacts
closed?
Yes
0vac across
No
L1 & T1 of
contactor?
Yes
Does heater
No
elements
come on?
Yes
Is the blower
No
motor
running?
Yes
Is indoor
No
blower speed
correct?
Yes
44
24v between 24 volts at
No
R & C at transfomer
thermostat? secondary?
Yes
Yes
24v between
No
C & G at
thermostat?
208/240v
Yes
No
between L & N
at motor
harness?
Yes
208/240v at
208/240v at
No No
transformer L1 & L2 at
primary? contactor?
Yes Yes
Is there 24v between
No
C & T1/2/3/4/5
terminals at motor
harness?
Yes
AC -Heating (Electric Heat)
No
Check circuit breaker
disconnect fuses
Check wiring between contactor
and transformer
Replace transformer
Check low voltage fuse
thermostat or wiring
Check open limit switch
thermostat or wiring
Check circuit breaker or wiring
to heater kit
Check open limit switch or wiring
Check
Replace contactor
Check for open fusible link
Check thermostat or wiring
Check line voltage wiring to
Check wiring or motor controller
Check blower motor
See "Airflow Adjustment" section
Heat mode operation (Electric
Heat)