Testing Main PCB power
output to Heating
& Motor circuit.
With motor running in the heating mode,
read AC voltage across RY6 and RY1.
Any voltage reading means Main PCB is
defective.
See page 4 for Main PCB layout for testing.
Testing Motor circuit.
With power off read
resistance between
RY1 Brown and CN7
Blue.
Resistance reading of
good motor circuit is
about 1.9
Ω
. To test
thermostat and switch
use ohm meter on
lowest scale, any
resistance replace
component.
See page 4 for Main
PCB layout for testing.
