Samsung ME21F707MJT Service Manual page 34

5. Troubleshooting
5-2-1 OPEN ERROR of gas sensor/SHORT ERROR of gas sensor
"E-11" or "E-12" is displayed.
Is the Connector CN301
connected to the board properly?
Is the Gas Sensor
connected to Wire harness-S
Check gas sensor data value.
(Press 'Popcorn' and 'Auto Defrost' at once.)
Is sensor data value shown
Perform the operation again and
check if it is working properly.
YES
properly?
YES
on the display?
YES
NO
Put the connector to
proper position.(CN301)
NO
Connect the gas sensor to
wire harness-S properly.
NO
Replace the Main PBA.
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