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7.14 Tracing Limiter Faults
PROCEDURE:
1. Check the thermal limiter(s) for continuity across the limiter contacts.
2. Replace the faulty thermal limiter(s) with correct value (refer section 4.16).
3. Trace the component that is most likely to have caused the thermal limiter to trip.
To trace the likely cause of tripping
1. Enter technician mode to help determine the likely faulty component.
2. Trace the component fault. (top/bottom cavity)
Note: Thermal limiters are positioned in specific areas to detect certain components failing.
These are the most likely causes of a thermal limiter tripping:
•
Faulty cooling fan (stopped running).
•
Faulty element/power module (element run-away).
•
Faulty temperature sensor (incorrect reading)
7.15 Tracing Door Switch & Lock Faults
PROCEDURE:
Oven Door Switch
1. Push the door switch plunger in and out to ensure it is operating correctly. With no oven mode
selected the light should turn on when the door is opened and turn off when door is closed.
2. If the oven lights do not switch ON and OFF then check the wiring continuity between the door
lock assembly and the power module.
4. If the wiring continuity is good, replace the door lock assembly.
NOTE: during cooking modes the light can be turned off in the user preference section 5.6.
Door Lock Switches
Test to ensure the lock switch is switching properly in Technician Mode (refer section 6)
1. Use a multimeter to check that the door lock switch readings back to the power module are
correct. When the door is not locked, Lock Switch 1 inputs should be closed circuit and Lock
Switch 2 inputs should be open circuit. (The readings are vice-versa when the door is locked.)
2. Check the continuity and insulation resistance of the lock switch wiring
•
Replace the door lock assembly if a wiring continuity/insulation resistance fault cannot be
repaired.
•
If the wiring continuity and insulation resistances are good, it is likely that these switches
are not faulty.
door
switch
Lock switch 1
Lock switch 2
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