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Boiler on when thermostat was switched off

Discussion in 'Plumbing and Central Heating' started by DIY67, 28 Nov 2018.

  1. DIY67

    DIY67

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    This is weird. Early this morning I briefly turned the remote thermostat (Flowmaster 22199SX) on and then off. Went back to sleep and woke up a couple of hours later to it still running even through the remote was completely turned off. Went downstairs and (its a horrible fiddly, confusing thermostat) turned it on and off again. The boiler (Heatline) shut down but while the pump was running out before it shut there was a clicking tick at intervals. Also the bar seems to run right at the top of the black pressure gauge before it hits red. It settles between 1 and 2 bar.

    Is it possible for a boiler to be turned on without the remote stat being on ? Is this a sign of it needing a new battery ? This has happened once before last year.
     
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  3. Diyisfun

    Diyisfun

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    Does it not have a low battery warning?
    How was it fixed last year?
     
  4. DIYnot Local

    DIYnot Local

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