Truma Ultraheat not working on electric???

do you have a blown air heating supplementing the fire...?

if so, you can run this off gas, gently in the background, better than the fire i would suggest.... 

Yes I do and it does work better than electric but a few people mentioned about having the van ventilated? Seems pretty pointless if that were true I have to say but it stuck on my mind.

The manual doesn't say about having to ventilate on running the gas heater (other than the flue which is fitted etc) so I assume this was nonsense.

Still, it would be nice to understand why the electric isn't working

mike, many continental vans have gas-only systems (the electric 1800w 'E' part being an option....) so, in winter (and there are some very cold ones in central Europe) they will be keeping their gas fired blown air systems ticking over gently.

similarly, when we camp away from an EHU, our heating can only be gas driven...

as long as exhaust outlets are clear, as are any drop vents, running on gas would seem the natural thing to to.

good luck with the fault finding, at least you have a work around

mike, many continental vans have gas-only systems (the electric 1800w 'E' part being an option....) so, in winter (and there are some very cold ones in central Europe) they will be keeping their gas fired blown air systems ticking over gently.

similarly, when we camp away from an EHU, our heating can only be gas driven...

as long as exhaust outlets are clear, as are any drop vents, running on gas would seem the natural thing to to.

good luck with the fault finding, at least you have a 

mike, many continental vans have gas-only systems (the electric 1800w 'E' part being an option....) so, in winter (and there are some very cold ones in central Europe) they will be keeping their gas fired blown air systems ticking over gently.

similarly, when we camp away from an EHU, our heating can only be gas driven...

as long as exhaust outlets are clear, as are any drop vents, running on gas would seem the natural thing to to.

good luck with the fault finding, at least you have a work around

Thanks - mind put to ease :)

I'm certainly not qualified in any respect re the technical side of things but we had a similar problem on electric, intermittent for a bit and went completely. We have two heat sensors in the Truma casing. Was intermittent when one broke and dead when both died.  New heat sensors quite cheap I seem to remember - paid a man to solve buy and fit. . I hope you are happy to snuggle up under some warm bedding

Fortunately the van is under warranty as we only picked it up in September so I guess I'm lucky that it's happened now and not when the warranty expires!

From the point of view of the electrical operation I believe that the Truma relays can fail.  From the point of view of the gas operation The heater should be room sealed so all of the combustion takes place outside of the van therefore safe to run overnight if neccesary. 

The Ultraheat is notorious for failure of (one or more of the 3) relays on the control circuit board.  These fail in such a way that the relays still sound as if they are operating, but in fact the contacts have failed (often welded in one position). 

The most common failure mode results in the heater ONLY working in the 500W position; you could try this. (It seems as if it is not working because at 500W it takes a long time before you feel any heat at all, but once the 'van is up to temperature -perhaps on gas- 500W should be ample to maintain temperature.)

Replacing the relays is not difficult if you are competent at soldering, but if still under warranty get them to fit a NEW pcb!.

The electric elements of my Ultraheat system would initially switch on but fail to come back on after the thermostat had switched them off. My tame caravan tech replaced 2 thermisters (?) ... about the size of a 5p coin & Voila ..... a working heater on all settings 

In the last few years I have repaired my and the brother in laws Truma Ultraheat.As stated above the relays on the circuit board are of poor quality and often burn out.In both cases I changed the pcb’s for ones with beefier relays from a supplier on ebay.As yours is still under warranty I would let them sort it for you.

Good luck.