Error code reference

Whirlpool Oven Error Code Microwave Oven Inverter Error

Microwave oven inverter error

Microwave oven inverter error - communication or inverter failure.

First step from the service manual

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.

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
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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