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Troubleshooting
6-1 Electrical Malfunction (Continved)
Parts
Microwave
turns off
during cook-
ing cycle.
Electric
shock is
felt.
Door does
not operate
properly
Timer does
not operate.
Cooking tray
does not
rotate.
Magnetron
thermal
cutout
switch
OFF
6-2
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Cause
1) Too small
If a small amount of food is heated for a long time,
a load
period of microwave may turn off during operation.
2) Defective
Check to see if the magnetron thermal cutout switch is
magnetron
activated at a temperature higher than 150˚C.
thermal
cutout S/W
Incomplete
Make sure that qrounding of the power supply cord has
qrounding
been done properly.
1) Broken door
Remove the cabinet for inspection.
hinges
Check the door hinge.
2) Missing or
Check if the screws are secured well to the door hinge.
loose screw
1) Defective
If the timer does not operate with 220~230V applied to the
timer motor
terminals, the timer motor amy be faulty.
2) Defective
The lamp does not light.
contacts
of timer S/W
1) Defective
Check to see if 21V exists at the motor terminals.
drive motor
If so, motor will be defective.
1) Blocking of
Check if the air inlet or outlet ventilation is blocked
the ventilatior
by the wall or other objects.
2) Defective
If the fan motor does not operate with 220~230V applied
fan motor
to the terminal, the motor may be faulty.
3) Too small a
If a small amount of food is heated repeatedly over
load or no
a long period of time, microwave turns off during
load
operation.
manuals search engine
Diagnosis
Remedy
To increase the oven
load, add a glass of
water into the oven.
Replace thermal cutout
switch.
Rewire.
Replace door hinges.
Fasten or tighten.
Replace timer.
Replace timer
Replace drive motor.
Keep a distance of
100mm from the
wall or the objects.
Replace fan motor.
To increase the oven
load, place a glass of
water into the oven.
Samsung Electronics
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