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Quote: Originally posted by arc systems on 08/4/2012

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There are so many if's, the isolation switch can let enough 240v through to power the green led as that's running on 5v via a 10v transformer on the control board, so it can still be at fault. But not if the switch is a Truma one, it's other makes, ie, clipsol, that seem to be the problem?
The stats are impossible to test as they always check out perfectly! changing them regardless though, has cured no end of problems.
BTW, Lack of wheel balance is the likely reason for these to play up as the do!

But, the biggest long standing problem is the room stat misreading the vans temperature and switching off long before it should, then taking an age to switch back on again which now sounds more likely to be your problem?

This stat is in the control switch, so, where is yours situated? and what direct sources of heat can influence it, either from the front or from the back of the switch?

For instance, if the back of the switch is in the wardrobe above the heater? hen open the doors and move clothing away from it, now see if the heater behaves better?
Same goes if it's behind the tele? move the tele away!

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Thanks for the reply. The only reason I thought it might not be the room stat (it is a truma one) is that at night when the temp drops very low and the heater has been left turned off I still can't get it to turn on even when the dial is turned up to number 9. The Stat is located on the side of the cupboard above the fire and by the TV but at night the TV has been turned off at the plug so wouldn't have been giving off any heat. The other thing is that we can't ever get it to work unless the dial is turned up to 9, if it does turn on and then we turn it down to below this the heater turns off. I think its back to the dealer on Wednesday but will certainly be encouraging them to look at the internal stats and room stat! Fingers crossed its not a big job as we are hoping to go away again at the end of next week!

I would say that on average it only works sometimes after it has been left turned off at the isolator for sometime and then it is switched on, turned up to 9, and left without the fan turned on......it seems turning on the fan seems to make it turn off (and stay off) a lot quicker!

dazzer - this really could be our heater! Exactly the same symptons as yours. Lets hope our dealers get to the bottom of the problem.

Dazzer - ours does exactly the same, I thought ours was broken.

I've just posted the same problem!