Truma Ultraheat Problems Sprite Major 6

[Dave111]

Hope someone can help with this one.

We have a Sprite Major 6 2006 model fitted with the Truma Ultraheat blown air heating system (duel fuel). We caravan all year and have never had a problem. The system does not have a remote thermostat (it's fitted with the one behind the fire). We are away at the moment using an electric hook up and I cannot get the fire to turn off unless I turn the main switch off on the power control panel. The thermostat control dial and heat position switch seem to work but when I put the heat position dial to zero the fire doesn't go off even though the green light goes out.. I was thinking maybe stuck relay on the pcb in the back of the fire.

Any ideas??

Thanks Dave

 

[gary]

You've hit the nail on the head Dave, one of the relays has welded itself together, only solution is to replace the whole board or perhaps all three relays.

I can supply an exchange board with uprated relays and if you like a remote temperature sensor.

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