Viking VCSO210SS Service Manual page 16

VCSO210SS
Check of tube pump performance
Measure the weight of the reservoir filled with water
to water level 'A'g[oz].
Plug the tank into the oven and power ON.
Start 11-minute steaming operation.
To confirm the pump's roller is okay, observed through the hole of
the angle base. Is the tube pump unit rotating?
NOTE: The motor operating the tube pump cycles On and Off. You
may have to observed for a few minutes to see the rotation.
YES
Confirm that water is flowing at the feed-water inlet
of the engine.
YES
The 11-minute steam operation is finished (For the last one (1) minute, the tube pump does not run remaining oven moisture to discharged into
the dew tray. *** refer to page 9: Dew condensation water in the oven cavity and the exhaust air duct is discharged to the dew tray. ***
Open the door and swipe the remaining condensation from oven into the dew tray. Then close the door again.
Empty the dew try then plug it back into the oven.
Remove the tank from the main oven.
Measure weight of the water tank. (Weight after the operation is 'B'g[oz])
2. How to check performance of sensors (AH sensor, water level sensors and Engine thermistor)
Fill the tank to level 2 and plug it into the oven then power ON.
(Confirm that there is no water remaining in the oven cavity.)
Set the test mode to 10. [9] TEST MODE page 21,22)
16 second to air out oven then Microwave operates 100% power for one minute. AH sensor checked during that one minute.
Steaming (strong) operation (for 20 minutes) starts. Steam Engine's Thermistor and water level sensor checked.
Is Engine thermistor failure (11 01) indicated?
Is water level sensor failure (10 00 or 01 00) indicated?
NO Is the connector between the motor terminal and
board disconnected?
Is there a voltage of 120 VAC at the motor terminal?
Press the STOP/CLEAR key to stop the operation.
NO
Is there breakage or clogging in the tube?
After 20 seconds, remove the dew tray and return accumulated water in the tray to the tank.
Press the START key.
Is AH sensor failure (- - 10) indicated?
NO
The operation is finished.
NO
NO
Test mode #10 ends (11 11)
Hole of the angle base for the motor
of the tube pump unit
NO
YES
YES
(Stop the operation.)
NO
Is the weight reduction (= A - B) equal to or more than 150g [5.3oz]?
YES
EE02: Proceed to checking the AH sensor for failure.
YES
EE12: Proceed to checking the engine thermistor for failure.
YES
Go to 1) Checking performance of the water level sensor
in page 15.
Normal
16
YES
After stopping the operation,
connect/repair the connector.
NO
Press the STOP/CLEAR key
to stop the operation.
Replace the control board.
YES
Replace or repair the tube.
Replace the motor or the pump unit.
NO
YES
Normal