Error code reference

GE Microwave Error Code Humidity Sensor OPEN

Any defect of the humidity sensor will display as OPEN; the humidity sensor circuit is detected as open or…

Any defect of the humidity sensor will display as OPEN; the humidity sensor circuit is detected as open or defective.

First step from the service manual

Disconnect humidity sensor wire harness from CN8 on power board and check resistance: Black-Red = 6.5K ohm, Red-White = 3.25K ohm, Black-White = 3.25K ohm.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
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Humidity Sensor OPEN on my GE Microwave

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Any defect of the humidity sensor will display

From Service Manual 964032, p.44:

1.Disconnect humidity sensor wire harness from CN8 on power board and check resistance: Black-Red = 6.5K ohm, Red-White = 3.25K ohm, Black-White = 3.25K ohm.

2.Measure line voltage at the power cord terminal block. Expected: 120 VAC (L1 to neutral) or 208 to 240 VAC between L1 and L2 under load.

3.Inspect the cord strain relief and terminal block screws for signs of arcing or heat discoloration. Loose connections here mimic an intermittent power failure to the control board.

Part WX09X70911

Power cord

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First step from the service manual

Get the full diagnostic procedure for Humidity Sensor OPEN.

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