GE Profile PHB925SB1SS Technical Service Manual page 62

Convection Fan Troubleshooting Table
Symptom
Fan motor buzzes Open capacitor
No fan operation
Open winding as indicated
by ohm check red to gray and blue
to gray (approx. 60 ohms each)
Fan loud
Loose shaft nut
Fan loud
Convect cover screws
or cavity screws loose
No fan operation
Check voltage blue to gray when fan
is counterclockwise – should read
120VAC. Also, red to gray when
clockwise – should read 120 VAC.
No fan operation
Shaft or blade rubbing on oven liner Loosen screws/readjust position/tighten.
No fan operation
Jamb switch NO to C is open
Possibility
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Correction
Harness, terminals or bad capacitor.
Replace motor.
Tighten shaft nut. Do not bend blade.
Tighten. Use larger screw if stripped.
• Check RPSM MAIN.
• If voltages OK, check harness or winding
resistance.
Replace jamb switch or check harness.