Panasonic Microwave Ovens - Recent Questions, Troubleshooting & Support


There is no error code 888.
All error codes on this machine start with the letter H.

Panasonic... | Answered 9 hours ago


Fairly sure you can download one from the Panasonic website. I did for my inverter combination oven.

Panasonic... | Answered 3 days ago


That would be an inverter issue. Here's my overview of Panasonic microwave faults:
Diagnosing Panasonic microwave oven stoppages:

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter, controller, magnetron, or a bad connection from one or the other.
If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 7 seconds, it has a problem with the inverter.
If the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

Or see if this describes what's happening:

Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector. If so, see:

http://www.microwavecontrol.com/safety.htm
http://www.microwavecontrol.com/disassembly.htm
http://www.microwavecontrol.com/doorsw.htmH95, H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.
It may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.
Due to the complexity and lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.
In Canada, you can find an authorized Panasonic servicer here.
Got more questions? Please contact me directly for full details since FixYa doesn't always inform us of follow-up questions. Remind me of the full model number and FCC ID number from the tag and your detailed symptoms.
- William E. Miller, AS-EET
pupista@gmail.com
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide "Recycling by repairing since 1982"

Panasonic... | Answered on Dec 08, 2017


As with many, if not most microwaves, Panasonic Genius microwaves cook using waves at 2450Mhz.

Panasonic... | Answered on Dec 06, 2017


Look at the instruction manual for manufactured from date.
If it works, it works. Nothing common to look for.

Panasonic... | Answered on Dec 05, 2017


See my help file on door switches here.

If you have other questions, please feel free to contact me directly (see below). .- William E. Miller, AS-EET
pupista@gmail.com
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Panasonic... | Answered on Dec 01, 2017


Diagnosing Panasonic microwave oven stoppages:

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter, controller, magnetron, or a bad connection from one or the other.
If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 7 seconds, it has a problem with the inverter.
If the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

Or see if this describes what's happening:

Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector. If so, see:

http://www.microwavecontrol.com/safety.htm
http://www.microwavecontrol.com/disassembly.htm
http://www.microwavecontrol.com/doorsw.htm

It may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.
Due to the complexity and lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.
In Canada, you can find an authorized Panasonic servicer here.

If you have other questions, please feel free to contact me directly (see below). .- William E. Miller, AS-EET
pupista@gmail.com
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Panasonic... | Answered on Dec 01, 2017


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes.

Be sure the cooling fan is running when the oven is cooking and be sure any vents or filters are not blocked.

Feel free to contact me directly (see below) if you have other questions.
.- William E. Miller, AS-EET
pupista@gmail.com
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Panasonic... | Answered on Dec 01, 2017


Luzetta
This is a common problem with microwave ovens and is easy to diagnose. Whenever I replace the fuse, I always perform this test. I don't want the unit coming back in a couple of days with the same problem.
Install a known good fuse. It should be a 20 Amp, Slo-Blo, with a ceramic body. Leave the cover off. Place a container with at least 2 cups of water inside the unit. Cook on high for at least 5 minutes. As soon as it finishes, UNPLUG the unit and feel the fuse. If it is extremely hot, the fuse is going to fail in a short period of time. The fusible material inside the fuse is melting from this excessive heat. It only takes a small amount of resistance at the fuse holder contacts to create this amount of heat. Replace the fuse holder rated at least 20 Amps. The higher the better.

Panasonic... | Answered on Dec 01, 2017


Would need to check power to main board. A lot of times it is the small low voltage transformer on the main board. If the primary winding goes bad it cant get power to the rest of the board to function. So to start, is there power getting to the low voltage transformer on the main board??Have you had any thunder storms or power surges at your home where it is plugged in? If a home loses its Neutral power line it can mess up a lot of electrical devices in the home. do you notice your lights browning at times. If so you may need to get your power company out to do a load test on you system. But the transformer is a very low amp device and will not blow the main fuse if it goes bad. So you could bhave aburnt trace on the back of the main board or a bad transformer. Best guess. Good luck

Panasonic... | Answered on Nov 29, 2017


Check those 3 micro switches in the door latch assembly.

Panasonic... | Answered on Nov 27, 2017


Contact Panasonic directly on their website

Panasonic... | Answered on Nov 27, 2017


Internal fuse may have opened.

Panasonic... | Answered on Nov 26, 2017

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