Thermador C272 User Manual

Service Manual
for
Thermador
Built-In Ovens
Models:
C302
/ C272
C301
/ C271
92-02-025A © Thermador Corp. 1999

Thermador C272 Specifications

General

Brand	Thermador
Model	C272
Category	Oven
Language	English

Summary

"C" Oven Relay Boards

RELAY BOARD MATRIX

"C" DAC Relay Board

DAC Relay Board Pin Header Details

Troubleshooting Relay Board Pin Failures

P2 Lower oven sensor

Troubleshooting steps for P2, the lower oven sensor.

P3 Upper oven sensor

Troubleshooting steps for P3, the upper oven sensor.

P5 Lower oven door latch

Troubleshooting steps for P5, the lower oven door latch.

P9 Upper oven door latch

Troubleshooting steps for P9, the upper oven door latch.

P10 Sends display signals to display head

Troubleshooting for P10, display signals to the head.

P11 Sends communication signals to display head

Troubleshooting for P11, communication signals to the head.

PO Upper/lower door latch motors

Troubleshooting for PO, door latch motors.

Troubleshooting Relay Board Pin Failures (Continued)

P18 Relay board transformer

Troubleshooting for P18, the relay board transformer.

P1 Both cooling motors and halogen lights

Troubleshooting for P1, cooling motors and halogen lights.

P8 Lower oven convection motor

Troubleshooting for P8, the lower oven convection motor.

P7 Upper oven convection motor

Troubleshooting for P7, the upper oven convection motor.

P14 Upper oven double line break relay coil

Troubleshooting for P14, the upper oven double line break relay coil.

P15 Lower oven double line break relay coil

Troubleshooting for P15, the lower oven double line break relay coil.

Troubleshooting Display Head Pin Failures

P10 Accepts display signals from relay board

Troubleshooting for P10, display signals to the head.

P11 Accepts communication signals from relay board

Troubleshooting for P11, communication signals to the head.

P2 Upper oven meat probe

Troubleshooting for P2, the upper oven meat probe.

P6 Upper oven air switch

Troubleshooting for P6, the upper oven air switch.

P4 Lower oven air switch

Troubleshooting for P4, the lower oven air switch.

P8 Power supply to touch control board

Troubleshooting for P8, power supply to the control board.

P1 Display/communication signals to tcb

Troubleshooting for P1, display/communication signals to TCB.

Troubleshooting Right Side Touch Control Board

P2 Sends commands to display head

Troubleshooting for P2, commands to display head.

Servicing Components

OVEN COMPONENT LOCATIONS

Removing Bake & Broil Elements, Catalyst, Meat Probe Jack

To remove the broil element

To remove the catalyst

To remove the meat probe jack

Removing Hidden Bake Element

Removing Oven Temperature Sensor

Removing Convection Bake Element

Removing Convection Fan Motor

Removing Control Panel

Removing Glass & Display Head

Removing Oven Light Switch, Latch Assembly, Hi-Temp Cutout

To remove the oven door latch assembly

To remove the hi-temp cutout

Removing Blower, Relays, Transformer

To remove the oven stalled fan relay

To remove the lamp transformer

To remove the relay board

Removing Air Switches

Removing Blower

To remove the upper blower

To remove the lower blower

Removing Lamp Transformer & Double Line Break Relay

Removing Oven Door

Removing Oven Door Gasket

Removing Oven Door Components

Removing "C" Oven Module

Troubleshooting

TESTING THE COMPONENTS

General procedures for testing oven components.

THE BLOWER MOTOR

Procedure for testing the blower motor.

THE AIR SWITCH

Procedure for testing the air switch.

Troubleshooting Component Tests (Convection & Lamp)

THE CONVECTION FAN MOTOR

Procedure for testing the convection fan motor.

THE LAMP TRANSFORMER

Procedure for testing the lamp transformer.

Troubleshooting Component Tests (Door Latch)

THE OVEN DOOR LATCH ASSEMBLY

Procedures for testing the oven door latch assembly.

To test one of the latch switches

Steps to test individual latch switches.

To test the door latch motor windings

Steps to test the door latch motor windings.

Troubleshooting Component Tests (Elements)

THE HIDDEN BAKE ELEMENT

THE BROIL ELEMENT

Troubleshooting Component Tests (Convection & Hi-Temp)

THE CONVECTION BAKE ELEMENT

THE HI-TEMP CUTOUT

Fault Codes

"C" OVEN Sequence of Events

Bake Mode

Bake Pre-Heat

Proof Mode

Proof Pre-Heat

Roast Pre-Heat Mode

Roast Mode

Broil Mode

Broil Pre-Heat

Convection Mode

Convection Pre-Heat Mode

Dehydrate Mode

Dehydrate Pre-Heat

Convection Bake Pre-Heat Mode

Convection Bake Mode

Convection Roast Pre-Heat Mode

Convection Roast Mode

Convection Broil Mode

Convection Broil Pre-Heat Mode

Clean Pre-Heat Mode

Clean Mode

Halogen Light Circuit