Thermador SMW 272 B Service Manual page 75

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Lower O ven Section
The test mode is designed to allow quick testing of
the control inputs and outputs.
The test mode is accessed by holding the STO P
TIME key down at power up or by holding the STO P
TIME key for 10 seconds within 5 minutes of power
KEY PRESSED
Bake Keys
Broil Keys
Convection
Keys
Convection
Roast Keys
Oven light
T imer 1
T imer 2
Clean Keys
Corresponding bake relay closes (bake element turns on).
Corresponding broil and convection relays close (broil and convection elements turn on).
N ote: The total current drawn by the broil and convection elements may exceed the
rating of the power supply circuit breaker, which will cause the circuit breaker to trip
open.
Corresponding convection fan relay closes (convection fan turns on).
N o action.
O ven light and cooling fan relays close (oven lights and cooling fans turn on).
If the upper oven element supervisor is not active, a four digit EEPRO M CRC checksum
is displayed in the blue digits. If the CRC is incorrect, 4 F's will be displayed. The oven
temperature for each oven is displayed in the appropriate red digits.
If the upper oven element supervisor is active, all the display segments are lit.
If the lower oven element supervisor is not active, a four digit EEPRO M CRC checksum
is displayed in the blue digits. If the CRC is incorrect, 4 F's will be displayed. The oven
temperature for each oven is displayed in the appropriate red digits.
If the lower oven element supervisor is active, all the display segments are lit.
Corresponding door latch status number indication shown in the blue digits.
D isplay Unlock Switch
7 closed
6 open
5 closed
4 open
3 closed
2 open
1 closed
0 open
up, provided no other key is pushed prior to STO P
TIME. The control will immediately enter the test
mode. W hen keys are released, all display digits will
display "-" to indicate that the test mode is active.
The following will occur when a button is pressed:
ACT IO N
Lock Switch D oor Switch
closed closed
closed closed
open closed
open closed
closed open
closed open
open open
open open
Page 73
SMW O ven Service Manual
Latch Status
invalid
latched
unlatched, door
closed
in transition
invalid
invalid
unlatched, door
open
invalid