(Revised 1/02)
TROUBLESHOOTING
7-23
PROBLEM: FAN MOTOR DOES NOT OPERATE - (Continued)
Probable Cause
Corrective Action
Relay K6 on relay board may not
be operating properly. (Continued)
Start switch MR1 not operating
properly.
WARNING
Be sure oven is disconnected from branch
circuit power before performing any repair
work.
Open circuit measured. Replace the relay board.
Coil has continuity. Refer to schematic diagram (page
4-19 or 5-19) and continuity check wiring harness.
Replace defective wire and/or wire terminal.
IMPORTANT
If you need to replace the capacitor that has the 15K-ohm
resistor, be sure the resistor is reinstalled on C1. See
schematic diagram on page 4-19 or 5-19. No resistor
should be connected between terminals on C2. C1 can be
used for C2 if resistor is removed from terminals. See
page 4-19 or 5-19.
Measure starting current through white wire from full motor
stop. Current should be approximately 12-15 amps, then
drop to 4.5 ± 1 amp.
Proper current not measured. Replace MR1. See page
4-19 or 5-19.
Proper current measured. Refer to schematic diagram
(page 4-19 or 5-19) and continuity check wiring harness.
Check voltage across contacts 2 and 4.
Voltage measured. Replace start switch MR1.
See page 4-19 or 5-19.
No voltage measured. Disconnect oven from branch
circuit and check coil continuity between MR1-3 and
MR1-4.
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