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Thermal Switches
Limit Thermal Switch
The high limit thermal switch is wired in series with
the common side of all the elements, which are tied
to the common side of the double line bake relay.
This limit switch opens at 284°F and closes when the
temperature cools below 254°F. This switch is used
to protect against element runaway. The symptom
of this switch being tripped is the elements will not
work for any operation.
To remove the limit thermal switch:
The high limit thermal switch is located on the back
side of the wall oven (See
Component Locator Views
).
Remove the wall oven from installation. (See
1.
Oven Removal
.)
Remove the appropriate rear access panel.
2.
Disconnect wires, remove two 1/4-in. hex-head
3.
screws and the thermal switch.
Thermal Switch
Low Voltage High Temperature Thermal Switch
The clean FAD thermal switch is active during all
operations. If the thermal switch opens in any cook
mode of operation, the fault code screen will show
-F9- failure code.
When this condition exists, check
the fan operation (look for obstructions), inspect
oven installation (make sure grille areas are not
blocked), and oven insulation.
The clean FAD thermal switch for single ovens or
upper double ovens is mounted to the oven exhaust
duct located in the component compartment in
front of the fan motor. It is wired directly to the relay
board. This limit switch opens at 240°F and closes
when the temperature cools below 190°F.
Low Voltage Low Temperature Thermal Switch
The bake FAD switch is active only during non-
self-clean (unlock switch closed, lock switch open)
operations.
The bake FAD thermal switch for single ovens or
upper double ovens is located under the rear top
cover in front of the cooling fan. It is wired in series
with the unlock motor switch.
The bake FAD thermal switch for lower double ovens
is located in the lower oven control compartment. It
is wired in series with the unlock motor switch.
The values for these thermal switches are:
OPEN
CLOSE
Single Oven
205°F
177°F
Double Upper
205°F
177°F
Double Lower
240°F
190°F
Note:
The following is an indication of an open
bake FAD: A cooking mode is selected. When START
is pushed, the status screen displays "DONE" then
reverts back to the home menu. The lock motor
continues to run while seeking the "Unlocked"
position.
Note:
To remove the clean FAD thermal switch on
lower double ovens see the lower oven section of
Relay and Power Boards
.
To remove the clean FAD thermal switch on single
and upper double ovens:
Access the control compartment. (See
1.
Access
Control Compartment
.)
Remove two 1/4-in. hex-head screws and the
2.
thermal switch.
Disconnect the 2 wires from the thermal switch.
3.
Limit Thermal Switch
The lower double oven clean FAD thermal switch is
riveted to the lower oven vent trim. It opens at 250°F
and closes when the temperature cools below 220°F.
(
Continued Next Page
)
Note:
The following is an indication of an open
clean FAD: A cooking mode is selected. When START
is pushed, the control displays “F9 – FAD ERROR
DETECTED – MODE CANCELED” then returns to
home.