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Error code reference
Whirlpool Oven Error Code Microwave Oven Inverter Error
Microwave oven inverter error
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Diagnostic procedure
The full Microwave Oven Inverter Error 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 (Off, wait 10 seconds, On), start a microwave cooking function and wait 1 minute to verify failure reappears. Unplug and check that P21 and P22 connections of the Microwave Appliance Manager are firmly connected.
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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