Troubleshooting
M Series Wall Oven
M Series Wall Oven
4-11
#824974 - Revision C - November, 2016
1421
1422
1531
1532
1620
1731
1732
1831
1832
1931
1932
1A31
1A32
2
2
3
3
2
3
3
3
3
3
3
3
3
Upper left convection element relay
open.
Lower left convection element relay
open.
Upper broil element DLB open
Lower broil element DLB open
Auxiliary DLB open
Upper oven light triac open
Lower oven light triac open
Upper MDL relay open
Lower MDL relay open
Upper right convection fan triac
open
Lower right convection fan triac
open
Upper left convection fan triac
open
Lower left convection fan triac
open
Back pin P3-6 and test for
voltage to ground with left
convection element ener-
gized.
Back pin P7-6 and test for
voltage to ground with left
convection element ener-
gized.
P4 - Dual DLB relay. Unable
to test.
P8 - Dual DLB relay. Unable
to test.
With power to unit, and MDL,
lights, convection fans, and
cooling fan off.
1. Back pin and check volt-
age J5-8 to J5-9.
2. Activate lights.
Back pin J5-2 and test for
voltage to ground with lights
energized.
Back pin J6-2 and test for
voltage to ground with lights
energized.
Back pin J5-3 and test for
voltage to ground with MDL
energized.
Back pin J6-4 and test for
voltage to ground with MDL
energized.
Back pin J5-4 and test for
voltage to ground with con-
vection fan energized.
Back pin J6-5 and test for
voltage to ground with con-
vection fan energized.
Back pin J5-5 and test for
voltage to ground with con-
vection fan energized.
Back pin J6-6 and test for
voltage to ground with con-
vection fan energized.
If no voltage, replace the
relay board.
If no voltage, replace the
relay board.
See Procedure A.
NOTE: Redundant DLB -
can't test individually.
See Procedure A.
NOTE: Redundant DLB -
can't test individually.
Voltage should change from
120 VAC to 0 VAC when
lights are activated. If no
change replace relay board.
See Procedure E.
See Procedure E.
If no voltage replace relay
board.
If no voltage replace relay
board.
See Procedure E.
See Procedure E.
See Procedure E.
See Procedure E.
Fault
Priority
Fault Message Test
Action
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