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Post Info TOPIC: Thetford Fridge Piezo


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Thetford Fridge Piezo


My daughter  has has a Thetford three way fridge in caravan (N304M)

1. There is no spark to light the gas - spark maybe 1 in twenty times

2. Can light the flame with a gas torch first time and it stays alight

3. Looked on internet how to remove press ignition  but cant find anything

4. Anyone know how  to remove piezo button to check

5. To remove front panel does the fridge have to be remove

6. Video would be great

Laurie



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Guru

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From Google
There could be several reasons why your piezo igniter is not working. Here are some common reasons and solutions:

Battery: If your piezo igniter is battery-powered, the battery may be dead or low. Try replacing the battery with a new one.

Wiring: Check the wiring of the piezo igniter to ensure that it is properly connected and not damaged. If the wiring is damaged, you may need to replace it.

Obstruction: The spark produced by the piezo igniter may be obstructed by dirt, grease, or other debris. Try cleaning the spark tip with a soft-bristled brush or compressed air.

Cracked ceramic housing: If you are clicking the piezo and you are not seeing a spark, this is usually the problem1. The fix is easy so dont buy a new ignition just yet If none of these solutions work, you may need to replace the entire piezo igniter.

I hope this helps!

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The refrigerator is actually made by Norcold.

Thetford Corp Refrigerator Replacement Parts List, N304M/N404M/N504M Series:

https://www.thetford.com/wp-content/uploads/2015/04/2134/637107-N304M.pdf (pages 11 & 12)

 

Norcold Service Manual for models N300 and N300.3:

https://norcold.com/wp-content/uploads/2018/07/SM_N300_619127D.pdf

 

Norcold N300-3 RV Refrigerator: Troubleshooting on Gas:

https://youtu.be/Ggik387E1wI

 

Norcold 633998 Push Button Igniter For Norcold N260/300/400/500 Refrigerator:

https://www.rvupgradestore.com/Norcold-633998-Push-Button-Igniter-p/00-4778.htm



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Guru

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I have just finished fixing my Thetford fridges piezo system. I have found that often it is as simple as a soot build up on the piezo wand that sits just above the gas burner and it is the contact point that the spark jumps from. I have found that if you give it a few gentle flicks with a stiff wire and knock the fine soot off it will usually fix it. Failling that, a very careful lite brush with a needle file around the area of the contact above the burner should do the job. Also the spark gap should be about 4mm so check that. You can also play a bit with that. I usually have to do this before each trip and it is normally fine for the trip until next time.

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Greg O'Brien

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