– 49 –
6. Start Speedcook cycle. While unit is running,
check resistance between the 2 terminals on
Relay Board RY11.
Note:
This step requires
checking resistance of relay contacts while the
unit is running. The lower heater ceramic relay
wires must
not be
connected to the relay when
making this check.
• If resistance is in
fi
nite, the lower heater
ceramic relay is not closing. (See
Relay
Board
, troubleshooting step 2.)
• If resistance is approximately 0
Ω
, go to step 7.
7. Check resistance between the single wire (black
wire) that connects to Relay Board RY11 and the
output of the Primary Interlock Switch (brown
and red wires).
• If resistance is approximately 38
Ω
, see
Primary Interlock Switch
,
troubleshooting
step 4.
• If resistance is in
fi
nite, problem is with:
◊
Lower Heater Ceramic
◊
Wiring between the Primary Interlock
Switch and the Lower Heater Ceramic
◊
Wiring between Lower Heater Ceramic
and the connector that connects to RY11
8. Disconnect Relay Board RY11 connector. Does
heater stay on?
• If no, Relay Board RY11 is stuck on. (See
Relay Board
,
troubleshooting section.)
• If yes, the neutral wire to heater is shorted
to ground.
Disassembly
To remove the Lower Heater Ceramic:
1. Remove the Bottom Cover. (See
Bottom Cover
.
)
2. Disconnect the turntable and heater wire
harnesses, then remove wiring from the 2 wire
retainers.
3. Remove the 6 Phillips-head screws that attach
the heater assembly to the oven.
Disconnect
Disconnect
Wire Retainers