Truma S3002P - not staying alight (1 Viewer)

[JaG]

Just got our new (to us) motorhome and found a problem with the Truma S3002P heater.
Press and turn the gas control knob to maximum and press the ignition button. The pilot lights instantly and held for up to a minute. Let it go and it goes out instantly. Main flame does not kick in at all, not that it should do until the gas control is released (I think).
Anyone confirm what the problem is?
Thanks

 

[Lenny HB]

Probably the safety thermocouple, from memory there is a plate under the heater that unscrews to get access (form under the van). Leisure Shop Direct have them in stock.

 

[JaG]

I think I may have found the problem...and it looks like you are right. It does look like the thermocouple, as in the photos. It is well frayed and separated half way along. While I have got it all out I will clean up the jets, etc. Strangely enough I only had a parcel from them yesterday...the heater element supplementary kit at £238 as there was no element in the heater.
Thanks for the advise.

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[jockaneezer]

That looks more like the HT igniter cable than a thermocouple.

 

[JaG]

That looks more like the HT igniter cable than a thermocouple.

No, it is definitely the thermocouple as I have had it all apart removed it from the heater. The cable was attached to the top one.

 

[jockaneezer]

@JaG My apologies, never seen a heater one with a braided covering, although our hob does have HT type ones to each burner, good to get to the bottom of it though

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[JaG]

@JaG My apologies, never seen a heater one with a braided covering, although our hob does have HT type ones to each burner, good to get to the bottom of it though

I have had loads of these heaters over the last 41 years of caravanning/motorhoming and I have never seen a braided one either, though by the look of it it is original from 2002.