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Panasonic Microwave Fault Codes



Panasonic Microwaves have built in fault codes...


The H98 error code indicates a primary failure in the magnetron or inverter circuitry.


The H97 error code on the many Panasonic microwaves is an indication of one of 4 possible failures: magnetron tube, control board, high voltage Inverter board, and/or loose wiring.


Some look like H97, H98...

Troubleshooting of Inverter Circuit (U) and Magnetron...

This oven is programmed with a self diagnostics failure code system which will help for troubleshooting, H97, H98 and H99 are the provided failure magnetron and inverter circuit problem areas. This section explains failure codes of H97, H98 and H99. H97, H98 and H99 appears in display window a short time after start key is pressed and there is no microwave oscillation.

Panasonic Fault Codes

NOTE:

DO NOT try to REPAIR this Inverter Power Supply (U) and also DO NOT RE-ADJUST PRESET VOLUME on the board. It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very high voltage and very large current. Off alignment or inverter board operation is dangerous. Operating a misaligned inverter circuit is dangerous due to the very high voltage and current that is produced by this board. Defective boards must be replaced with a new one.

- Check magnetron filament for open or short to casing before proceeding to determine a good magnetron.

Alternative way to troubleshoot oven with AC Ampere meter used.

H97, H98 and H99 appears in display window a short time alter start key is pressed and no microwave oscillation with AC Ampere meter used for troubleshooting.

Panasonic Fault Codes 2

NOTE:

DO NOT try to REPAIR this Inverter Power Supply (U) and also DO NOT RE-ADJUST PRESET VOLUME on the board. It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very high voltage and very large current. Off alignment or inverter board operation is dangerous. Operating a misaligned inverter circuit is dangerous due to the very high voltage and current that is produced by this board. Defective boards must be replaced with a new one.

- Check magnetron filament for open or short to casing before proceeding to determine a good magnetron.



Some common Panasonic Repair Parts For These Fault Codes above:




Panasonic Microwave Parts




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