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Convection Heater TCO (Thermal Cut Out)
• Location
(See
Right Side View
.)
• Interrupts line voltage to the convection heater
in the event of excessive temperatures.
• Normally
closed.
• Opens 320°F, non-resettable.
• Disassembly.
(See
Disassembly
.)
Disassembly
To remove the Convection Heater TCO:
1. Remove the Outer Cover. (See
Outer Cover
.)
2. Disconnect the 2 wire harnesses from the TCO.
3. Remove the 2 Phillips-head screw that holds the
TCO in place.
Right Side View
TCO
Troubleshooting
1. Disconnect power to the oven.
2. Remove the Control Panel Assembly. (See
Control Panel Removal
.)
3. Disconnect Noise Filter line out.
4. Check resistance between the wire that
connects to Noise Filter line out and the input of
the Magnetron TCO (blue and red wires).
• If resistance is approximately 0
Ω
, the Oven
TCO and wiring is operating correctly.
Note:
If you are troubleshooting L1 not present
at the Magnetron TCO, see Noise Filter,
troubleshooting step 5.
• If resistance is in
fi
nite, problem is with:
◊
Oven TCO, or
◊
Wiring between the Oven TCO and Noise
Filter line out, or
◊
Wiring between the Oven TCO and the
Magnetron TCO.
Disassembly
To remove the Oven TCO:
1. Remove the 3 Phillips-head screws from the Air
Tunnel Outlet. (See
Air Tunnel Outlet
.)
2. Turn the Air Tunnel Outlet over.
3. Disconnect wiring to the Oven TCO.
Air Tunnel Outlet
Oven TCO
Disconnect
Disconnect
Oven TCO (Thermal Cut Out)
• Location - Attached to the inside of the Air
Tunnel Outlet. (See
Top View
.)
• Disables the oven, if the oven cavity gets too
hot.
• Normally
closed.
• Opens 320°F, non-resettable.
• Disassembly.
(See
Disassembly
.)
(
Continued Next Page
)
