GE PT7800DH2BB - Troubleshooting Lower Oven

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Mini Manual # 31–17121–1 (available on website).
Dead Unit If Control does not show any display, after verifying the circuit breaker is ON, check
for 120 VAC at the black wire on the BROIL relay to the white wire on J102, with
wires still connected to board. If 120 VAC is present, Control needs to be replaced. If
less than 90 VAC, check voltage from the white wire on J102 to the chassis ground;
if 120 VAC, neutral limit switch is open, or house supply voltage is at fault.
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No Bake If the Bake element is not energizing, check the resistance on the yellow wire of the
bake relay to the orangeZLUHRQWKH'/%UHOD\$SSUR[LPDWHO\ű
No Broil If the Broil element is not energizing, check the resistance on the purple wire of the
broil relay to the orangeZLUHRQWKH'/%UHOD\$SSUR[LPDWHO\ű
No Convection If the Convection element is not energizing, check the resistance on the blue wire of
J803 to the orangeZLUHRQWKH'/%UHOD\$SSUR[LPDWHO\ű
No Bake, Broil or
Convection
If all elements are not energizing, the L2 High Limit Switch is open.
All 120 volt components
No Cooling Fan
Motor High
If the Cooling Fan High is not energizing, check the resistance on the black/white
wire on J801-3 to the whiteZLUHRQ-$SSUR[LPDWHO\ű
No Cooling Fan
Motor Low
If the Cooling Fan Low is not energizing, check the resistance on the red/white wire
on J801-2 to the whiteZLUHRQ-$SSUR[LPDWHO\ű
No Cavity Lamps If the Cavity Lamps are not energizing, check the resistance on the black wire on
J801-1 to the whiteZLUHRQ-$SSUR[LPDWHO\ű
No Convection Fan If the Convection Fan Motor is not energizing in the clockwise direction, check the
resistance on the blue wire on J801-5 to the white wire on J102. Approximately
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No Lock Motor If the Lock Motor is not energizing, check the resistance on the grey/black wire on
J801-6 to the whiteZLUHRQ-$SSUR[LPDWHO\Nű
Bridge Board Communication Error
If this error is displayed, check the two wire connector between the ovens and at the Bridge Board.
If no problems are found, replace the Bridge Board.
Troubleshooting Lower Oven