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Sanyo STB1220C1 User Manual Page 35

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7-3. Some part of air conditioner does not operate.
7-3-1. Only fan does not run.
7-3-2. Electric heater does not work.
Both for (cooling & electric heating models) and (heat pump model)
•
Measure resistance of electric
heater winding.
Blown
•
Check continuity for thermal
fuses.
Replace them.
•
Measure coil resistance of
heater relay.
•
Check PCB Ass'y. (Power pack)
(Only for heat pump model)
•
Check to see if the circuit of
heater thermostat is opened or
closed ?
Fan cannot
be turned.
OK
•
Check fan rotation.
Turn fan gently once or twice by
hand.
•
Check fan casing
foreign matter on
inside.
Fan motor burnout
or foreign matter in
bearings.
Remove foreign
matter or repair.
Repair or replace.
•
Measure resistance of fan motor
winding.
•
Check fan motor capacitor and
4P-connectors (Socket and Plug).
•
Check PCB Ass'y . (Power pack)
(Only for heat pump model)
31
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