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  1. L

    viessmann 100 boiler keeps switching off after 30 mins

    Ok I went to the 3 port valve and tapped the metal part a few times with a toffee hammer and the boiler has sprung into life, its been working for 5 hours now without going off Does that mean the top part of the valve needs changing or the whole unit Thanks
  2. L

    viessmann 100 boiler keeps switching off after 30 mins

    Hi John Viessman engineer has been out and the boiler is not the problem, he tested the thermostadt and says thats working as well. So what does that leave, the programmer and the 3 point valve? anything else I need to consider Thanks
  3. L

    viessmann 100 boiler keeps switching off after 30 mins

    Thanks for all the replies, when you say the external controls do you mean either the thermostadt, Timer or 3 point valve? is there anything else? I want to get someone in but how do I find a reputable person in my area, are there sites you can go on with lists of good engineers in your area...
  4. L

    viessmann 100 boiler keeps switching off after 30 mins

    Its not a combi boiler. Just got up and checked the boiler because the house is freezing, boiler is off, the only way to get it to work is to turn dial fully clockwise until it clicks (reset position), turn it back to zero then up to full on, the boiler is now working agaoin but will go off...
  5. L

    viessmann 100 boiler keeps switching off after 30 mins

    theres only 1 knob to turn that sets the temp
  6. L

    viessmann 100 boiler keeps switching off after 30 mins

    I have all the documentation and the benchmark log book also his gas safe registration number
  7. L

    viessmann 100 boiler keeps switching off after 30 mins

    He has emigrated to Australia typical just our luck
  8. L

    viessmann 100 boiler keeps switching off after 30 mins

    When it happens the display on the boiler is completely clear, there is a picture of a house but the radiatior and tap symbol usually showing are missing as is the water temperature, also there is no fault code displayed. If I reset it the boiler bursts into life for another 30 Mins then...
  9. L

    Fused spare

    Im totally confused now so change of idea, if I take a spare from a socket on the upstairs ring that does not already have a spare on it, is there a legal limit to the length the 2.5 cable can run? my only chance is the double socket on the other side of the loft and would that be ok? If it...
  10. L

    Fused spare

    We had an RCD main board fitted when the house was rewired 2 years ago so a shaver socket can be run from the lighting circuit?
  11. L

    Fused spare

    Same problem though getting the supply to the area I need the socket, If I cant use an extention lead Nearest ring socket already has a spare from it to the loft. Is ther a limit to the length you can run a spare from a socket on the upstairs ring?
  12. L

    Fused spare

    That was the thought I just need to know if it is a no no The fused spare would be outside the 3 Zones (0, 1, 2) 2foot from the window 4 foot above basin 9 foot from shower no bath fitted
  13. L

    Fused spare

    Next to window 4 foot above hand basin 9 feet away from shower cubicle
  14. L

    Fused spare

    Hi Is it possible to run an extention lead from the upstairs ring, then replace the extention lead socket with a fused spare, and wire an Electric toothbrush into the fused spare? I have a photo in my album but not sure what to do with it :D Thank you
  15. L

    Viessmann Vitodens 100-W boiler keeps switching off

    New thermostat you mean? are they all universal or would it have to be another Sunvic? which is the best one to get Thanks
  16. L

    Viessmann Vitodens 100-W boiler keeps switching off

    Hmm I dont have a tester, dont know how to proceed now then Thanks anyway
  17. L

    Viessmann Vitodens 100-W boiler keeps switching off

    The stat is the Sunvic TLX, is there anyway to test it or do I just have to buy and fit a new one?
  18. L

    Viessmann Vitodens 100-W boiler keeps switching off

    Well thats helpful? They have worked fine for 11 years without a problem and as yet no one has said the thermostat is at fault. The boiler has only been in for 9 months If there is a chance its the thermostat how do I test it?
  19. L

    Viessmann Vitodens 100-W boiler keeps switching off

    So by an external problem do you mean the Thermostat?? I have no idea how to test it, if not the thermostat what else could it be Thanks
  20. L

    Viessmann Vitodens 100-W boiler keeps switching off

    What do I check for this problem then? could it be the Thermostat? although when I turn it I hear it click but that doesnt mean its working does it. How would I check it, its a Sunvic Thanks
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