System boiler not firing up for hot water when requested

Discussion in 'Plumbers' Talk' started by bond007, Nov 25, 2021 at 9:37 AM.

  1. bond007

    bond007 Well-Known Member

    Have an ideal system boiler working with hot water cylinder tank.
    I have a hive system connected to it.

    Problem I have is,when hive calls for hot water.
    The boiler doesn't fire up and stays on standby.
    The hive thermostat and receiver shows green light to indicate hot water is on according to it.

    But when I turn the central heating on, the boiler fires up and works.
    So at the moment I can only use the hot water function of boiler.

    Is the 2 port valve for hot water gone faulty?
    Should it slide from auto to on when signal demand is sent. Or should remain on auto?

    Any ideas.....
  2. bond007

    bond007 Well-Known Member

    Temp glitch...think it's sorted it self out.
  3. Teki

    Teki Screwfix Select

    Possibly a sticking valve or faulty microswitch. Is it a 2x 2-port or a 3-port?
  4. bond007

    bond007 Well-Known Member

    2 port honeywell valve.
    Could be a sticky one......
    Works intermittently

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