GE Monogram ZV30RS Technical Service Manual page 16

Single Fan Motor
(Use schematic SE1ANB)
The fan
does not
work.
! No
Do the lights work?
Yes
!
With the lamp switch set to OFF, is 120
volts present between pin (a) and pin (e)
on the fan motor switch?
Yes
Disconnect power and remove the wires from
terminals from (a) and (e) on the fan motor switch.
!
Can you turn the fan blade by hand?
Yes
Isolate the fan motor switch.
!
With the fan motor switch set to (1), is continuity present between pin (a) and pin (1) on the fan motor switch?
!
With the fan motor switch set to (2), is continuity present between pin (a) and pin (2) on the fan motor switch?
!
With the fan motor switch set to (3), is continuity present between pin (a) and pin (3) on the fan motor switch?
!
With the fan motor switch set to (HI), is continuity present between pin (a) and pin (4) on the fan motor switch?
!
With the fan motor switch set to (1), is continuity present between pin (e) and pin (5) on the fan motor switch?
!
With the fan motor switch set to (2), is continuity present between pin (e) and pin (5) on the fan motor switch?
!
With the fan motor switch set to (3), is continuity present between pin (e) and pin (5) on the fan motor switch?
!
With the fan motor switch set to (HI), is continuity present between pin (e) and pin (5) on the fan motor switch?
Yes
Isolate the fan motor switch.
!
Is the resistence between the white wire and the red wire leading from the fan motor switch approximately 2.5 ohms?
!
Is the resistence between the white wire and the grey wire leading from the fan motor switch approximately 4.7 ohms?
!
Is the resistence between the white wire and the black wire leading from the fan motor switch approximately 8.3 ohms?
!
Is the resistence between the white wire and the blue wire leading from the fan motor switch approximately 14.2 ohms?
Yes
Locate the fan motor capacitor.
!
Is the resistence between the brown wire and the yellow wire approximately 18.1 ohms?
Yes
Replace the capacitor. If the motor
fails to operate replace the motor.
Troubleshooting
!
Is the circuit breaker open or fuse blown?
No
No
Repair faulty wiring.
No
Replace the fan motor.
Reset the circuit
Yes
breaker or replace the
fuse.
No
Replace the fan motor.
Note: On dual motor models, if one of the
capacitors is open, or if the wires and/or
connections to the capacitor are open, the motors
will run slower than normal. If both capacitors are
open, then both motors will hum.
– 16 –
Replace the fan motor
No
switch.
Repair faulty wiring
No
between the terminal board
and the fan motor switch.