Replacing Lamps; High Temperature Cutout (Htc); Convection Fan And Ring Element; Temperature Sensor - Thermador PO301 Service Manual

4.3.1

Replacing Lamps

Use 10-watt, 12-volt bi-pin halogen light bulbs (Part # 187385).
Halogen bulbs must be handled with a clean, dry cloth.
m CAUTION
Turn off power to the oven at the fuse or breaker box–light socket
is live with door open.
Be sure oven and lights are cool to the touch.
Handle glass lenses carefully.
4.3.1.1 Side Lamps
1. Remove racks and rack support.
2. Firmly push the top mounting clip up and back (toward oven
wall), until it releases the glass cover.
3. Pull the halogen bulb straight out from its socket.
4. Using a clean, dry cloth, insert the new bulb.
5. Reinsert the bottom of the glass cover (smooth side out) into
the bottom clip, and firmly push the top of the cover into the
upper clip until it snaps into place.
4.3.1.2 Ceiling Lamps
1. Unscrew glass cover.
2. Pull bulb straight out of its socket.
3. Using a clean, dry cloth, insert the new bulb.
4. Replace the glass cover.
4.4

High Temperature Cutout (HTC)

The HTC is a normally closed switch that will interrupt the relay supply
voltage in the event of a high temperature caused by a malfunctioning
control module.
The HTC is located in the plenum, behind and to the left of the MDL.
Although it cannot be easily removed or replaced, a screwdriver can
Service Manual for Thermador Professional Series Built-in Wall Ovens
be used to reach the reset button located on the top center of the HTC
after the latch plate has been removed.
4.5

Convection Fan and Ring Element

All models in the Pro Series are configured with one or more oven
cavities that have both the convection fan and ring element (cavity
type D). The lower cavity of the PODC302 has the convection fan only
(cavity type C), and the lower cavities of the PO302 and POD302 offer
strictly thermal heating (cavity type A).
The fan may be used, with or without the ring element, to circulate
heat evenly throughout the cavity in various cooking modes.
The ring element (240V 2000W) and/or fan blade are easily accessed
on the rear wall of the oven cavity behind the convection baffle. The
convection fan motor is accessible only from the rear of the unit.
Refer to the Element Strip Diagram to test the element at the control
module, or:
1. Remove 2 T20 screws on either side of the element terminals.
2. Pull the element toward you so that terminal wires are inside
the oven cavity.
3. Disconnect the wires from the terminals.
4. Use an ohmmeter to check for resistance of ~29 ohms.
4.6

Temperature Sensor

Use an ohmmeter to check the resistance of the sensor. Normal
ranges based on cavity temperature are shown in Table 6.
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