Truma c6002eh problem on combi mode

Discussion in 'Heating and Air-Conditioning' started by Wayne26, Feb 16, 2014.

  1. Wayne26

    Wayne26 Read Only Funster

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    I have a truma C6002EH boiler. I have recently noticed the water taking longer than usual to heat up.

    When operating on Gas only it heats pretty quickly
    When on 240v setting 2 (1800w) it heats up in about an hour
    Now this is where my problem lies...
    When I'm on combi / winter mode (Gas and Electric together) it's still about an hour. Surely it should be faster than either gas or electric on its own.
    I think the gas isn't actually coming on to heat the water in this mode although the boiler does fire on gas for the heating side when in this mode I hear it light and kick in and out to provide extra power for the heater but makes no difference to the water.

    Any ideas?

    Many thanks

    Wayne
     
  2. Techno

    Techno Funster Life Member

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    If the power requirement is not great for space heating the boiler will give priority to the electric and save gas. If I'm correct then water heating time will not be faster unless you call for more heat in the room too.

    EDIT so yes you are correct the gas is not coming on! turn up the room temperature or switch to gas mode
     
    Last edited: Feb 16, 2014
  3. sdc77

    sdc77 Funster

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    We have this model and have been using it in winter mode.... Water is hot in well under an hour on electric only and on both.. (I've never timed it). We recently had both elements replaced though.. So maybe that's why.
     
    Last edited: Feb 16, 2014
  4. Techno

    Techno Funster Life Member

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  5. Wayne26

    Wayne26 Read Only Funster

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    Thanks guys. After reading the manual that makes sense. I recently had both elements changed and a new PCB. I'm now thinking that only one element might be working? When I turn the electric mode on to 1 the 240 lights don't flicker slightly and I'm what hung the EHU meter to see it the light flashes any faster and it dosent seem to. When I select mode 2 both element the light do dim slightly and the meter light flashes noticibly faster.

    Are the elements individually fused?
    Are the any connection I can check myself or and further tests?

    Thanks
     
  6. Techno

    Techno Funster Life Member

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    If it doesn't function how the manual describes I would take it back to whoever you paid to fix it, I'm sure they charged plenty and it should have a warranty
     
  7. motorhomer

    motorhomer Read Only Funster

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    Took me a while to understand this, but

    In SUMMER mode - ie water heating only

    On elec its either 1800 or 900 watts depending on setting

    On gas only its 2000 watts - ie the lowest of the 3 main automatic levels (2000, 4000, 6000)

    On mixed it doesn't actually use gas it uses elec same as elec only.

    In winter mode (ie heating as well as water heating)

    elec only is as above

    gas only is 2000, 4000, or 6000 depending on the difference between the temp setting and the actual temperature.

    Mixed is 1800, 3800 or 5800 again depending on temp difference.

    Running on mixed gives you no more power than gas only (in fact slightly less) but saves gas!

    Hope that's clear (I Think its right!)
     
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