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  1. C

    Sunvic TLX thermostat or boiler the problem?

    kevplumb: thanks - I would assume so as the thermostat has worked reliably for some time and has only recently started playing up. Any other thoughts or is the consensus that it's the thermostat that needs replacing?
  2. C

    Sunvic TLX thermostat or boiler the problem?

    I have a Sunvic TLX thermostat - this one, I believe: http://www.uk-plumbing.com/sunvic-room-thermostat-tlx2259-p-1345.html?zenid=c9e346cf7cfee920947e2eba941f0dfc The problem I'm having is that when it is set to 20 degrees and the hall, where it's located, is certainly colder than that (I...
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