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Models 104 & 220
Troubleshooting
Model 220 Electrical Troubleshooting
Following are the paths of power necessary for
component operation.
Auto Mode of Operation
L1 must pass through the reset mechanism of the
beater motorcontactor,theHPCOswitchandthedoor
switchbefore it gets tothecontrolswitch.InAUTO,L1
passes throughterminals 2and1at thecontrolswitch.
Then it goes to the temperature control. The
temperaturecontrolmust besetforL1topass through
the control switch terminals 4 and 5 and reach the
beater motor contactor. L1 going through the
temperature control also reaches the compressor
contactor .
Beater Mode of Operation
L1 must pass through the beater motor reset
mechanism, the HPCO and the door switch before
reaching the control switch. If the control switch is
placed in BEATER, the beater motor contactor is
energized and the beater motor comes on.
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