Combi oven trips ONLY on cool down?

[Bascule]

Hi

I have a three year old Panasonic Combination Microwave and oven – (It’s an NNCF778S, one of the ones with no turntable, and a pull down door)

It works perfectly, in all modes, Oven, Microwave, grill, combi etc. It will cook for as long as you want, I use it daily in preference to a full size oven as I live alone – so its regularly on for 1-2 hours at a time. Its used mostly for convection, only occasional microwave use.

However, recently, it has started tripping the main house RCD – not while cooking, not ever, regardless of how long it’s been on – but it consistently will trip them after the cooking has finished – during the cool down cycle, several minutes of the fans still running (which have been running all along), at some point it will trip – 4 uses out of 5.

If it trips – its a hard fault til it completely cools – needs to be unplugged. Next use, even lengthy, its all good, til the cool down.

Doesn’t make a difference if its been microwaving or convection cooking – trips during the cool down. If I unplug it the moment its finished, and only plug it back in when it’s fully cooled, no problem.

I have ‘assumed’ the element is unlikely, as it can cook for hours with no issue, and the trip problem still happens when it’s been microwave only.

Changing to a different ring circuit makes no difference – I put it on the cooker one and the fault still occurs.

I don’t really want to fork out for a new one if this can be fixed, I hate the wastage and funds are always tight.

I’d be really grateful for any pointers on this!!!

Thanks!

Ben

[kwatt]

Re: Combi oven trips ONLY on cool down?

Weird fault and Panasonic do not play nice with tech info as in, there is none. 🙁

A guess wold be a stat or cooling fan motor but it is a guess.

K.

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