Panasonic microwave fault codes
Panasonic’s code lookup lists eleven H-codes and explains none of them, while a separate UK support answer explains four in hedged terms and their service manuals decline to separate those same four at all. These pages use all three, and add the thing no consumer document mentions: their microwaves can lock themselves out permanently.
Where the code shows on a Panasonic
Panasonic use three prefixes and their own UK support answer sorts them for you: codes beginning H are system malfunctions needing an authorised technician, and codes beginning U are user errors you can resolve from the operating manual. There are eleven H-codes on Panasonic’s own list. Their service manuals treat H95, H97, H98 and H99 as one family indicating magnetron and inverter circuit problem areas and say nothing about the other seven; their UK support answer splits four of them, attributing the inverter circuit to H95, the magnetron to H97 or H98, and a general unassigned condition to H99, hedging each one. H96 is explained nowhere, despite sitting in the middle of that group. U-codes are conditions rather than failures — U14 is an empty water tank on a combination steam model, U50 is an overheated cavity. E-codes are faults Panasonic route straight to service, and E01 is the only one they explain, in a single line telling you to stop using the appliance. Then the word displays, which are the ones most often mistaken for faults: Cooling, HOT or HOT INSIDE WAIT, D or DEMO MODE, and Child or LOCK. None of those four is a fault. One warning specific to their inverter models, documented in Panasonic’s North American inverter service manual and not contradicted by anything they publish for the UK: the appliance counts how many times it has produced H97 and H98, and past a threshold it stops working for good until a service reset is done.
How to reset a Panasonic
For everything except the H-codes, unplug the microwave and plug it back in — Panasonic’s own UK support answer asks for thirty seconds, and their advice for the Alexa-connected models is the same disconnect and reconnect. The child lock is cleared by pressing Stop/Cancel three times within ten seconds, which Panasonic UK state directly and every UK manual we read confirms; three presses of Start is what sets it. Demo mode on the NN-CD87, NN-CF87, NN-CT55J, NN-CT56J, NN-CS894, NN-DS596, NN-CF853 and NN-CF873 series is cleared with Micro Power once then Stop/Cancel four times, and on other models by the sequence in that model’s manual. The H-codes are the exception and the reason matters: on the inverter models whose North American service manual documents it, three H97 events or two H98 events disable the oven permanently, and Panasonic state it stays disabled even after the defective part has been replaced and the oven power-cycled. Clearing that needs a documented service sequence entered with the door open, which also displays the total magnetron running hours and the number of H97 and H98 events recorded. Do not expect an owner power cycle to touch it.
Most common Panasonic faults
The Panasonic codes people look up most.
- H97Get it checkedAn inverter or magnetron fault — and a counter. Panasonic state three H97 events disable the oven permanently, even after the faulty part has been replaced.
- H95Get it checkedPanasonic’s UK support answer puts H95 on the inverter circuit; their service manuals decline to separate it from H97, H98 and H99 at all.
- DUsually simple to fixDemo mode. The appliance lights up, counts down and appears to work while making no microwaves at all, and it survives being delivered to you.
- CoolingUsually simple to fixNothing is wrong. Panasonic publish this one plainly: the fan is clearing heat off the electronics, and the word goes away when it stops.
Every Panasonic fault code
10 published codes. Filtering happens in the page — every one is in the HTML.
Showing 10 of 10 codes
Panasonic models
Codes can differ between generations. Check yours.
Guides that help with Panasonic faults
How to reset a microwave, and what the display means
Every make says unplug it, but the seconds differ. What each brand publishes, the displays that are not faults, and what to do with a code nobody publishes.Read the guideMicrowave faults: what you can fix, what you must not open
The plug fuse, the door, the waveguide cover and a mug of water are yours. Everything behind the casing is not, and unplugging it does not change that.Read the guide
Looking for Panasonic’s own support? www.panasonic.com. We are not affiliated with Panasonic.