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5-9-5 Magnetron Thermal Cutout
5-10 Sensor
The Sensor Cooking Function uses a special gas
sensor which detects both humidity(steam) and
hydrocarbons(food odors) during the cooking
process. Before conducting either of the sensor
tests below, ensure the unit is plugged into a will
outlet for at least 5 minutes. If already plugged
in, proceed. The sensor is a plug-in device
located in the vent area at the top left hand
corner of the cavity behind the grille.
To Service :
1. Disconnect power and remove grille.
2. Separate retainer from receptacle and
unplug sensor.
SENSOR COOKING TEST
1. Place 1/3 cup tap water in oven.
2. Touch , the oven starts immediately.
3. Control Beeps and Shuts off.
4. Touch .
1) Test
OK
- Normal
2) Test
Fails
- Check Sensor. See Sensor Test Below.
SENSOR TEST (QUICK TEST)
1. With 2 fingers touch and hold the following pads at the same time :
and
2. Observe diagnostic number in display (Numbers approximate).
●
15-185
(Normal-verify with “detection test” )
●
213
or Higher (Sensor failed to open, sensor
unplugged, wiring or smart board.)
● Less then 6 (shorted sensor, or smart board).
NOTE
: Only heater terminals ( H ; Black and Red leads) can be checked with ohmmeter(30Ω).
CAUTION : DO NOT ATTEMPT TO CHECK SENSOR TERMINALS (White and Orange leads).
♣ CAN DAMAGE SENSOR.
Power Defrost
Sensor Reheat
Pause/Cancel
potato
VENT MOTOR
GAS SENSOR
The magnetron thermal cutout is located above the
leads to the magnetrons. It is designed to prevent
damage to the magnetron if an overheated condition
develops in the tube to cooling fan failure, obstructed
air ducts, dirty or blocked air intake.
Under normal operation, the magnetron thermal cutout
remains closed. However, when abnormally high
temperatures are reached within the magnetron, the
magnetron thermal cutout will open at 320°F(160OC)
causing the oven to shut down. After the temperature
drops to 140°F(60°C) it will reset and cooking will be
able to resume.
To Remove Magnetron Thermal Cutout :
1. See ‘Removing Magnetron’.
MAGNETRON THERMAL CUTOUT
MAGNETRON
