GE JS998 Series User Manual

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Lower Cooling Fan Does Not Work
Enter the service mode.
Does the lower cooling fan come on?
No
Disconnect the connector on the lower cooling fan.
Is 120 VAC present from the MPB relay K1 NO
contact to AC IN (NT)?
Yes
No
Is 120 VAC present from the MPB
relay K1 NO contact to the EMI
filter board IN2 contact?
Yes
Is 120 VAC present from the MPB
relay K1 NO contact to the EMI
filter board OUT2 contact?
Yes
Is 120 VAC present from the MPB relay
K1 NO contact to the lower cooling fan?
Yes
Is 120 VAC present from the positive to
negative contact of the right cooling fan?
Yes
Replace the lower
cooling fan.
Is 120 VAC present from
the MPB relay K1 COM
contact to AC IN (NT)?
Yes
Is 0 VDC present from the MLB
connectors J3, pin 10 to J5, pin 2?
Yes
No
Is 120 VAC present from
the EMI filter board OUT3
contact to AC IN (NT)?
No
Is 120 VAC present from
the EMI filter board IN3
contact to AC IN (NT)?
No
Replace the one shot
TCO or repair the faulty
wiring from L2 input to
the EMI filter board.
Repair the faulty
wiring from NT
input to the EMI
filter board.
No
No
Replace the EMI
filter board.
Repair the faulty wiring
from the EMI filter board
to the lower cooling fan.
No
Repair the faulty wiring
from the MLB relay K1
NO contact to the
lower cooling fan.
No
No
Replace
the MLB.
Replace
the MPB.
Repair the faulty wiring from
the MPB relay K1 COM
contact to the EMI filter board.
Yes
Replace the EMI
filter board.
Yes

GE JS998 Series Specifications

General

Brand	GE
Model	JS998 Series
Category	Oven
Language	English