Thermador C271 Service Manual - Dehydrate Pre-Heat

Dehydrate Pre-Heat

Dehydrate Mode

Sequence Of Events:

1)

K4, K10, K11 relays close.

2)

K4  relay energizes both cooling motors; airflow from cooling motor

closes the “air switch” contacts, the completed “air switch” circuit signals

the board {signal voltage).

Note: if the air switch circuit is not completed within 40 seconds, the board

will interpret a cooling fan fault and display an F34 error code for the

upper oven, and an F64 error code for the lower oven.

3)

Pin header P14 on the relay board sends 24 VDC To the double line break

relay (DLB) coil. When the coil is energized; the DLB contacts close.

Current flows from L1 to one leg of the bake, broil and convection

elements.

4)

Convection relay K10 closes and sends current from L2 to the other leg of

the convection element, the convection element is on for 30 seconds

during each 1-minute cycle.

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