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Problem Diagnosis Charts
Models 3520/3525; 3620/3625 & 3620B/3625B
Problem
8. Oven will not work on timed
cooking or delayed time cooking
functions
10.Oven light not working
11. Oven light trips house breaker
when light switched "on"
12.Convection fan not working
13.Convection fan noisy
14.Oven door does not open after
completion of self clean cycle
15. Timer making buzzing noises,
incorrect display, etc.
Possible Cause
•
Timer not properly programmed
•
Timer defective
•
Burned out oven bulb
•
Timer defective
•
Coaxial power supply cable
defective
•
Open oven light housing or
wiring connections
•
Open light's transformer
•
Electrical ground
•
Timer defective
•
Timer coaxial power cable
defective
•
Open wire to fan motor
•
Defective relay on relay board
•
Baffle interference with
convection fan wheel
•
Motor defective
•
Back of stove panel vibrating
•
Convection fan wheel loose or
warped
•
Baffle interference with
convection fan wheel
•
Door latch mechanism
inoperative
•
Oven not cool
•
Timer defective
•
Timer coaxial power supply
cable defective
•
Timer relay board defective
13
Section 4
Repair/Test Procedure
Timer programming steps
(Procedure 5)
Replace timer (Procedure 4)
Check oven bulb (Procedure
15)
Check timer (Procedure 4)
Check coaxial cable
(Procedure 19)
Check oven bulb (Procedure
15)
Check wiring to oven light
(Procedure 15)
Check transformer (Procedure
15)
Check wiring to oven light
housing (Procedure 15)
Check wiring to light
transformer (Procedure 15)
Check timer (Procedure 4)
Check coaxial cable
(Procedure 19)
Check wiring to fan motor
(Procedure 16)
Check relay board (Procedure
18)
Check baffle plate (Procedure
16)
Replace fan motor (Procedure
16)
Check stove's back panel
(Procedure 32)
Check fan wheel (Procedure
16)
Check baffle plate (Procedure
16)
Check door latch mechanism
(Procedure 17)
Check self clean timer
programming (Procedure 5)
Check timer (Procedure 4)
Check coaxial cable
(Procedure 19)
Check relay board (Procedure
18)
MLSM20003-01-03
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