Error code reference

GE Microwave Error Code F4

Humidity sensor open or shorted: can also be triggered by electrical surge or excessive line noise.

SourceGE Advantium 120 - Service Manual (SCA1000/SCA1001)p. 40, 50

Diagnostic procedure

The full F4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Remove power to unit for 1 minute to reset; if recurring, test humidity sensor resistance at CN5 (BLK-RED = 6.2K ohms, RED-WHT = 3.1K ohms, BLK-WHT = 3.1K ohms). Replacing the sensor will not fix an electrical noise issue.

SourceGE Advantium 120 - Service Manual (SCA1000/SCA1001)p. 40, 50

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

7 manuals in the MyPros+ library document this code for GE microwave.

Models covered by the manuals that document this code

More models are covered than are listed here.

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