Viking VCSO210SS Service Manual page 18

VCSO210SS
6. EEO5 Engine high temperature failure
Is the connectors between the engine thermistor, board and engine mounting section
disconnected or short circuited?
Measure the engine thermistor resistance using a tester with the thermistor connector
The oven thermistor resistance is within its appropriate range.
Replace the control unit and the engine unit
7. EE12 Engine thermistor failure
Is the connectors between the engine thermistor, board and engine mounting section
disconnected or short circuited?
Measure the engine thermistor resistance using a tester with the thermistor
connector pulled out of the board.
The engine thermistor resistance is within its appropriate range.
About 200 kW at
About 10 kW at
About 1 kW at
Are there disconnection, breakage and short circuit in the engine heater
connections (the engine terminals and board)?
Is there a voltage of 120 VAC between the engine heater terminals?
Is the engine heater normal to meet the following requirements?
Insulation resistance: One (1) M or more at 500 VDC
Dielectric strength: 1000 V for one (1) minute
Leakage current: 0.3 mA or less
Resistance (in cold condition): 15.05 to 16.21
Replace the engine unit.
NO
pulled out of the board.
YES
NO
YES
NO
YES
NO
YES
Connect/repair the connector(s) or replace the
NO
Replace the engine thermistor or the harness.
Connect/repair the connector(s) or replace the
YES
NO
Replace the engine thermistor or the harness.
YES
Connect/repair the terminal(s) or replace the harness.
NO
The latch switch is in the door
open position.
NO
Is there a voltage of 120 VAC at
each terminal of the E thermostat?
YES
YES
Replace the control board, the display board or the harness.
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thermistor/harness.
thermistor/harness.
YES
Adjust the latch.
NO
Replace the Engine
thermostat.