Truma water heater not working on electric

MrGarval
MrGarval Forum Participant Posts: 120
edited March 2016 in Caravans #1

Can anyone help me as to why my Truma  Type US10 water heater fitted to my Bailey Senator 2007 model has just stopped working on electrics but is fine on gas. I have checked the fuse at the fuseboard and that is ok. I am down in Spain and the local dealer
does not seem to want to get involved. Can I carry out any basic checks with a voltmeter? Is it possibly the thermostat. Any help greatly appreciated..

Comments

  • Cornersteady
    Cornersteady Club Member Posts: 14,436 ✭✭✭
    5,000 Likes 1000 Comments Name Dropper Photogenic
    edited March 2016 #2

    Is there a thermal cutout switch? We had the same problem last October but ours was a combi. Check the instructions and see if there is one, ours was just a case of pressing it back in but it did take some force and it was recessed so had to use a pencil. You could always ring Truma back home?

     

    PS I assume you've checked that the EHU is working? or not forgotten to switch something on? water heater/electrics....

  • MrGarval
    MrGarval Forum Participant Posts: 120
    edited March 2016 #3

    Thanks for advise. Yes I have electric to the heater( well out of the Mains heater switch) so I will take the cover off and look further to see if there is a cut-out. Sadly no instruction book. Sorry slow reply, wi-fi problems on site.

  • Boff
    Boff Forum Participant Posts: 1,742
    1000 Comments
    edited March 2016 #4

    If I remember correctly the wattage of the heater element is about 700W or so earlier ones were less. Therefore it should be drawing about 3 amps at 230v. If you measure the resistance of the element it should be something like 75 ohms. If it is zero then
    the element has failed open circuit.  This should trip the van or site or indeed both electrics. If the resistance is very high then it has failed broken circuit. Either way you will need a new element which are easy to fit as long as you can get at them. 

    Those are rough figures so if you got a value of 90ohms I wouldn't worry. You are looking for either zero or infinity. 

  • MrGarval
    MrGarval Forum Participant Posts: 120
    edited March 2016 #5

    Thanks for all the advise and help received.

    I have just removed cover and cannot find a thermal cut-out but to get to it all I had to remove all connections to PCB which appeared to rather loose on the connection (2) so put it all back together after checking fuse etc on PCB and it is now working.
    Annoying thing is I don;t really know why. Will have to monitor and see what happens, will report back later.

    Regards.

  • Unknown
    Unknown
    edited March 2016 #6
    This content has been removed.
  • Cornersteady
    Cornersteady Club Member Posts: 14,436 ✭✭✭
    5,000 Likes 1000 Comments Name Dropper Photogenic
    edited March 2016 #7

    glad it worked outSmile

  • Navigateur
    Navigateur Club Member Posts: 3,880 ✭✭✭✭✭
    1000 Comments
    edited March 2016 #8

    A bit like closing Windows on a computer and opening it up again!!

  • MrGarval
    MrGarval Forum Participant Posts: 120
    edited March 2016 #9

    Well thanks for all your kind comments but sorry to report it has stopped working on electrics again this am. Appears to be a intermittent fault so will wait until we get back home where I can strip it down at leisure and get back-up if needed, which looks
    like I will. At least it is working on gas, oh perhaps I should keep quiet!!

     

  • huskydog
    huskydog Club Member Posts: 5,460 ✭✭✭✭✭
    1000 Comments
    edited March 2016 #10

    have you tried hitting it!!Surprised

  • commeyras
    commeyras Club Member Posts: 1,853 ✭✭✭
    1000 Comments
    edited March 2016 #11

    The OP did the next best thing to hitting it, he tightened loose connections.  This is often the solution.  A hammer is the last resort!  Well done OP and thanks for telling us what you did, always useful.

Categories