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  • FIRST POST
    • rumblefish
    • By rumblefish 10th Sep 19, 12:56 PM
    • 213Posts
    • 436Thanks
    rumblefish
    Boiler firing up when not needed!
    • #1
    • 10th Sep 19, 12:56 PM
    Boiler firing up when not needed! 10th Sep 19 at 12:56 PM
    Hi,

    Looking for some boiler advice please - boiler is a 2003 Ferroli Tempra 18 with an un-vented hot-water cylinder in the airing cupboard.

    The boiler seems to be firing up all the time even when the heating and hot-water is switched off so there is no draw on the system.

    Any ideas?

    Thanks!
Page 1
    • Cardew
    • By Cardew 10th Sep 19, 3:01 PM
    • 27,974 Posts
    • 13,832 Thanks
    Cardew
    • #2
    • 10th Sep 19, 3:01 PM
    • #2
    • 10th Sep 19, 3:01 PM
    How do you define 'no draw on the system'? If your water heating is switched on it will fire occasionally as the cylinder cools.
    • Inner Zone
    • By Inner Zone 10th Sep 19, 3:03 PM
    • 2,633 Posts
    • 1,566 Thanks
    Inner Zone
    • #3
    • 10th Sep 19, 3:03 PM
    • #3
    • 10th Sep 19, 3:03 PM
    Duplicate thread here:


    https://forums.moneysavingexpert.com/showthread.php?t=6046567
    • btr30
    • By btr30 10th Sep 19, 3:38 PM
    • 64 Posts
    • 32 Thanks
    btr30
    • #4
    • 10th Sep 19, 3:38 PM
    • #4
    • 10th Sep 19, 3:38 PM
    My guess would be a sticky motor or end switch which is not closing, on either the heating or hot water valves. This will "trick" the boiler to believing there is a demand from either of these circuits and therefore the boiler will run outwith time and temperature demand.
    I squirt of WD 40 in the motor might get you by for a while, or if motor is seized it will require to be replaced,
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