Appliance Diagnostic

Panasonic Microwave H97 Error Code - Inverter Drive Circuit Fault

H97 signals an internal power supply fault within the high-voltage inverter power circuit module.

What Caused This Error?

The control system reports H97 when the monitored condition described by the error code is outside the expected operating range. In this case, the most likely trigger is defective inverter pcb module. Other common contributors include loose high-voltage harness lead and short circuit in magnetron.

Step-by-Step Diagnostic Check

  1. Unplug microwave unit from outlet.
  2. Disconnect electrical power before opening panels. Verify wire leads connecting main PCB to inverter board are secure.
  3. Disconnect electrical power before opening panels. Test magnetron terminal resistance.
  4. Disconnect electrical power before opening panels. Replace high voltage inverter board module.
Most Likely Replacement Part

Inverter Power Module

OEM Part #: MODEL-SPECIFIC

Buy Replacement Part →