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Error code reference
Jenn-Air Microwave Error Code F4-E8
Inverter Over Temperature.
SourceMicrowave Oven - Tech Sheet: Service Diagnostics & Safety (W10767736)p. 9
Diagnostic procedure
The full F4-E8 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
Cycle power, place a load in microwave cavity, start microwave cooking function, wait 1 minute to verify failure. Check cooling fan connection for loose connectors and oven installation for air blockage. Verify cooling fan is running during cooking.
SourceMicrowave Oven - Tech Sheet: Service Diagnostics & Safety (W10767736)p. 9
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
2 manuals in the MyPros+ library document this code for Jenn-Air microwave.
Models covered by the manuals that document this code
- JMW2427DB00
- JMW2427DB01
- JMW2427DS00
- JMW2427DS01
- JMW2430DB00
- JMW2430DB01
- JMW2430DP00
- JMW2430DP01
- JMW2430DS00
- JMW2430DS01
- JMW3430DB00
- JMW3430DB01
- JMW3430DB02
- JMW3430DB03
- JMW3430DP00
- JMW3430DP01
- JMW3430DP02
- JMW3430DP03
- JMW3430DS00
- JMW3430DS01
- JMW3430DS02
- JMW3430DS03
- JMW3430DS04
- JMW3430HP00
More models are covered than are listed here.
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