Heartland Appliances Metro Service Manual page 14

Problem Diagnosis Charts
Models 3520/3525; 3620/3625 & 3620B/3625B
Problem
16.Bake & broil elements do not
heat after self clean cycle
17.Incomplete cleaning
18. Timer does not operate or
cannot be set
Possible Cause
•
Safety limit tripped or defective
or wiring damaged
•
Door latch mechanism
inoperative or wiring
•
Timer programmed for a
delayed cooking function
•
Bake/broil limit defective or
wiring damaged
•
Relay board defective or wiring
damaged
•
Timer coaxial power supply
cable defective
•
Controls not properly set or self
clean programmed too short
•
Bake element not heating
•
Door latch mechanism
inoperative or stuck
•
Bake/broil limit not bypassed or
defective
•
Oven door not sealing
•
Timer defective
•
Safety limit not calibrated
properly or defective
•
No signal from self clean
mechanism to timer
•
House breaker tripped or fuse
blown
•
Timer blank – no power
•
Timer defective
•
Timer coaxial power supply
cable defective
•
Timer locked out (3 horizontal
red lines present in temperature
display
14
Section 4
Repair/Test Procedure
Check safety limit (Procedure
8)
Check wiring and connections
(Procedure 8)
Check door latch mechanism
(Procedure 17)
Check timer programming
(Procedure 5)
Check bake/broil limit
(Procedure 7)
Check relay board (Procedure
18)
Check coaxial cable
(Procedure 19)
Check self clean timer
programming (Procedure 5)
Check bake element
(Procedure 9)
Check self clean mechanism
(Procedure17)
Check bake/broil limit
(Procedure 7)
Check oven door gasket
(Procedure 12)
Replace timer (Procedure 4)
Check safety limit (Procedure
8)
Check wiring at timer
(Procedure 4)
Check wiring to self clean
mechanism (Procedure 17)
Check power supply
(Procedure 1)
Check timer (Procedure 4)
Check wiring and connections
at relay board (Procedure 18)
Check timer (Procedure 4)
Check coaxial cable
(Procedure 19)
Check timer programming
(Procedure 5)
MLSM2003-01-03