Domestic RM2852 piezoelectric fires over and over again.

If you are on AC mode where you are, then just unplug the ignitor module from the board. That should stop the sparking (except see below)

On mine that is the smaller plug with four wires. The big plug with more wires comes from the fridge control board.

If that stops the sparking wait till May (still under warranty then?) and now get it fixed by a tech.

Or--Somehow, the ignitor board is getting 12v independently from whatever the board is signalling. On gas, the fridge works (cycles even) but keeps sparking but the flame detector is not shutting it off. Even if the board is signalling the sparker to stop from what the flame detector is telling the board.

Meanwhile even on AC mode, the sparker is on and won't stop but there is no gas, so the board is not making the sparker spark, the board thinks it is on AC. So the sparker is getting 12v from somewhere else whenever the fridge is turned on, either to AC or Gas.

So the board may be ok. You have a 12v connection direct to the ignitor module that is on the same switch the fridge control on/off (gas or AC) is on. That could be in the board though--the big plug and the little plug meet at the board.

I would take both plugs out and the board to check inside for any debris that might be making a crossed signal. Just disturbing those might fix it, who knows?

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I could according to my credit card company but I won't be doing that in any case. Even more hassle than just fixing it myself. Especially since it's working anyways, just not correctly. It'd be different if my ice cream was melting...

It's a major problem to take it to a tech because we live full time on here and my wife is currently working. If it comes down to it I suppose I'll just have to take care of it myself and leave them some shitty reviews anywhere I can. Some times companies change their mind when they realize that they are getting battered on Facebook and Twitter. Got an extra $1500 from my car insurance that way as a matter of fact.

Well I'd rather buy the part then go to a tech so that won't be happening unless they'll send it to him and let me pick it up.

buylow12 wrote:
A bad main board in 6 months nice.... They better send the part or the whole thing will go back on the warranty on my credit card. I can install it but what a waste of my time, obviously they're not going to pay someone else to install it. That would make too much sense.

Your Warranty pays for both Labor and the Part. Pipe dream if you think you can send the refer back and get full credit. Doug

Ralph Cramden wrote:

dougrainer wrote:
I doubt Dometic will send you a replacement part. They will require you to go thru an Authorized Service Center. Doug

Not accurate at all. Dometic has sent parts, and yes one of those parts was a fridge main board, directly to my home when the warranty was still in force. They also sent a white LED board to replace the blue in our current fridge. I also know of plenty of others who have received parts directly from Dometic.

Regardless If I needed a main board and was ponying up $ I would go with Dinosaur Electronics board and forget about the cheap Dometic OEM board made from cheap components.

I deal with Dometic every week and have for 40 years. They DO NOT send warranty parts out to retail customers. They may make an exception but it is very rare. Doug

I'd certainly prefer a tech to do it but I'm not planning on going anywhere anytime soon, we're here till May. So unless they'll send a mobile tech out, and pay for it, I'm stuck working on it.

IMO there might be more going on here than just a bad board, so if it were mine, and under warranty, I would rather have a tech do it all. That way if he replaces the board and something is still wrong, he can figure it out instead of you.

My first thought that it could be a Murphy in the wiring to the board, and not the board, seems to be most unlikely, since it is a plug in from ignition module to the board, not individual wires to blade terminals.

However, it is a puzzle how the gas mode works at all if the board is bad. And then how can it still spark after there is a nice blue flame? I thought the flame sensor from the ignition module would shut off the ignition spark.

Or if that signal goes back to the board, then what use is the ignition module if it just passes voltage to/from the sparker and sensor?

Sparking while in AC mode but no flame means there is no gas. (good!) but I thought the signal to spark "went with" the signal to open the gas valve.

I would buy the Dinosaur like you say but Dometic should send me a new one for free sense it's only 6 months old. The last one I had was 15 years old, should have hung on to it.... Must have been made different back then.

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