GE PT925 Manuel d'utilisateur Page 53

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Convection Fan Troubleshooting
Problem Possible Causes What To Do
Fan motor buzzes Open capacitor Harness, terminals, or bad capacitor.
No fan operation
Open winding as
indicated by ohm
check red to black and
blue to black (approx.
60 ohms each)
Replace motor.
Check voltage CCW
to N when fan is CCW
- should read 120VAC
in Convection Bake.
Also, CW to N when CW
as indicated by ERC
display
If no voltages, replace ERC.
If voltages OK, check harness or winding resistance.
Shaft or blade rubbing
on oven liner
Loosen screws/re-adjust position/tighten.
Jamb switch NC to C is
open
Replace jamb switch or check harness.
Fan loud
Loose shaft nut Tighten shaft nut. Do not bend blade.
Loose convect cover
screws or cavity screws
Tighten screws. Use larger screw if stripped.
Oven Sensor Ohmmeter Test
Remove ribbon cable from the upper oven door. Make resistance measurements of the sensors with the
exposed terminals of the ribbon cable.
Upper Oven
Sensor
Pin 13 to pin 14
Room temp - 1080 ohms
Clean temp - 2650 ohms
Lower Oven
Sensor
Pin 11 to pin 12
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