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TROUBLESHOOTING GCCO-PP / -PT CONT’D
NO MOTOR, MANUAL MODE
PROBABLE CAUSE CORRECTIVE ACTION
Defective back-up toggle
switch
Confirm that toggle switch is in the “ON” position.
Check toggle switch for normal operation.
Defective back-up relay
Check for 24VAC at relay coil.
If no voltage is present:
Confirm that points are making.
If voltage is present:
Replace relay.
Defective component
transformer
Confirm that 120VAC is feeding primary coil.
Confirm that 24VAC is at secondary coil.
Defective motor relay
Check for 24VAC at relay coil.
If no voltage is present:
Confirm that points are making.
If voltage is present:
Replace relay.
Defective motor
Check for 120VAC across P1 and T7/T4.
If no voltage is present:
Confirm that wires have continuity.
If voltage is present:
Replace motor.
NO MOTOR, COMPUTER MODE
IMPORTANT NOTICE: Before trying to trouble shoot “No Motor in Computer Mode” confirm that motor is
operational in “Manual Mode”.
PROBABLE CAUSE CORRECTIVE ACTION
Defective output on CPU
board
Check for 24VAC at JP12 for high or JP13 for low (while oven is
calling for heat).
If no voltage is present:
Board is operating correctly.
If voltage is present:
Replace CPU.
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