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Electrical Component Reference
Compressor Windings
Compressor Windings
Red, Yellow & Blue Wires
Compressor Winding Resistance Check:
Unplug the wire spade connectors from the circuit board. e spade terminals have a small clip to press for
removal. Press this clip slightly inward, then li straight up on terminal. e wires red to yellow, yellow to blue &
red to blue should have readings from 2 - 4 ohms. ere should be no reading from any wire to chassis ground.
If the readings between the windings di er greatly, the windings are bad. If there is a reading from any wire to
the chassis, there is leakage in the windings.
Outdoor Fan Motor
Outdoor Motor Winding Resistance Check:
e outdoor motor is an ECM motor, so resistance checks are more di cult to read. Polarity of your meter will
make a di erence in the readings. It is advisable if in doubt about the fan motor, remove the plug of the existing
motor with the power disconnected, then plug a new motor into the circuit board before mounting the motor.
Isolate and secure the new motor, then safely turn the unit on and check operation. If the motor start correctly,
change the motor, otherwise the circuit board should be replaced.
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