Viking VCSO210SS Service Manual page 17

3. How to check sensor (oven thermistor) performance
Power ON the oven
Set the test mode to 03.
Press the START key.
Does a measured value for the oven thermistor change as oven heating proceeds?
Is the measured value within ±10 bits with respect to the
reference value after about eight (8) minutes?
Press the STOP/CLEAR key to finish the operation. (This action is required when everything is OK.)
4. EE01 Oven thermistor failure
Is the connector between the oven thermistor and board either disconnected or shorted?
Measure the oven thermistor resistance using a tester with the thermistor connecting
The oven thermistor resistance is within its appropriate range.
Replace the control unit or the display unit.
5. EE02 AH sensor failure
Has the humidity sensor connector been disconnected from the control board?
Measure element resistance between the opened and sealed sides of the humid-
ity sensor with the humidity sensor connector disconnected from the board.
S
C
(see [9] TEST MODE page 21,22)
YES
YES
NO
connector pulled out of the board.
YES
NO
G-3
Measuring Resistance @25C
F1 to F3
G-2
F2 to F3
F1 to F2
G-1
NO
NO
EE01: Proceed to checking the oven thermistor for failure.
NO
Replace the oven thermistor or the harness.
YES
Connect the connector.
Is the resistance 0?
Is the resistance infinite?
3kΩ
Is the resistance normal?
2kΩ ~ 3kΩ
5kΩ ~ 6kΩ
Replace the control board.
17
Power ON the oven
YES
Connect or repair the connector.
YES
Replace the humidity sensor.
NO
YES
Replace the humidity sensor.
NO
NO
Replace the humidity sensor.
YES
VCSO210SS