Truma Caravan Heater Problems

Carver Truma Operation Video

Are you having problems with your Truma Caravan Heater not heating up ?

See this link for a start: 

I was having problems with my heater. NO, I don’t fix caravan heaters – but to help you here is how I fixed mine. If you are lacking heat, by searching the Web, I found that there are several problems that seem to afflict these heaters 1) Relays not working: My model has settings at 500W, 1KW and 2KW. If the relays are faulty, this can reduce the power of the heater. In my case, I tested the power input to the caravan to confirm that all my relays were working correctly, with the caravan taking the correct amount of current for each heat setting. You can check this yourself if you are “handy”. Buy a cheap “clamp-on” current meter from Ebay (that can measure AC current) and place it around the LIVE wire only on the supply to the Caravan. (I modified an extension lead so that I could hook around the LIVE wire only to make current measurements safely. The currents should be: 0.5A, 4A and 8A respectively.

As my currents were all correct, this suggested that my problems lay with the Thermostats on the heating element. To fix this, firstly you need to buy a “repair kit” from Ebay (or supplier of your choice). In addition to BOTH thermostats (you can’t test them, besides by the time you have managed to get to them you will WANT to replace both so you don’t have to do it all again!). Where was I? Oh yes, in addition to BOTH thermostats, you MUST replace the Gasket Seal on the Gas Flue.

PLEASE NOTE: As you need to disconnect the Gas Supply and the Gas Flue – you will need to find a handy Gas Engineer or “phone a friend”….

There is a good Video on YouTube here:

Very good Guide to replacing Truma Thermostats, but I would have liked more detail….

If you want to see the original link with comments – It is published on YouTube by “Attic Treasures”. That takes you through the job, but I would have been happier with more detail, so after you have watched the video, you can follow my article below on how I did it…

These are the little Bu****’s ! – Located BEHIND the Gas Heater!

To Be Continued…..

4 thoughts on “Truma Caravan Heater Problems”

    1. Sorry, I have still not got around to writing up my own comments – but I’m glad this helped. Also be aware of (in my case, Bailey Senator 6, Arizona), the room thermostat sitting over the flue. You may well be running on electric, but some heat comes up that flue pipe and turns the thermostat off early. I’m still trying to figure out what to do about this – insulation behind the thermostat? Better to relocate the thermostat, but where to put it ??? Also its a “special” thermostat – so you HAVE to use the OEM replacement – very expensive. I replaced mine as it seemed to be switching off early. (below temperature). The replacment is better but still not brilliant! I got mine “half price” (still around £60!) on Ebay.

  1. hiya
    can i pick it brains….
    trumatic spaceheater in our caravan
    and it packed up
    what happenned was, we turned it down from 2000w number 9 to 2000w 1 and it stopped heating totally???
    it won’t work on 1000w or 500w either
    the relays on all settings sound as though they click on and off
    any ideas of what we can do.

    1. I couldn’t figure out the signals from the control switch / thermostat to the fire. I’m not sure how the fire works, but if the relays are “clicking” then there must be power to operate the relays, but it seems that either no mains power is reaching the electric element, or the Element has failed. I assume it runs a set of elements that get switched in and out, but I don’t really know.

      Have you seen this thread ?

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