Damper Assembly - GE Advantium 240 Technical Service Manual

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Magnetron Thermal Cut-Out (TCO)
The magnetron TCO is attached to a bracket
mounted to the magnetron. The magnetron TCO
bracket is held in place by a single Phillips-head
screw.
This position of the magnetron TCO allows it to
sense the temperature of the magnetron.
The magnetron TCO opens at 302°F and cannot be
reset. If the magnetron TCO opens, it will disable all
oven functions including the display.

Damper Assembly

The damper assembly is on the top right side of
the oven cavity. When the damper door is closed,
moisture is retained in the oven cavity. When the
damper door is open, moisture is released, allowing
food to be more crisp.
The outer cover must be removed to access or
observe operation of the damper assembly. (See
Oven Removal / Partial Removal
The damper assembly is held in place by 2 pins
and 3 Phillips-head screws that attach the damper
assembly to the oven chassis. When removing,
move the damper assembly inward to disengage
the 2 pins from the vent tube.
Pin
)
.
Pin
– 35 –
Damper Door Switch
The damper door sensing switch is mounted on the
damper assembly. The switch monitors the damper
door position and provides this information to the
main PCB, which
controls the
operation of the
damper door
motor. When
the damper
door is closed,
the switch
is open. The
motor will run
until the switch
sends the door closed signal. If the damper door
sensing switch circuit shorts (or opens), the damper
motor will run continually. The damper motor has
an approximate resistance value of 3.36 K Ω.
Damper Door Operating Modes
Cooking Damper
Mode Position
Microwave Open
Speedcook Closed
Damper
Door
Motor
Damper Door Switch
Switch Plunger Switch
Position Contacts
Not Depressed Closed
Depressed Open