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  1. M

    High pitched whine that rises and falls for hours after central heating has been on

    yeah, yesterday I've started putting the heating on in the morning & the afternoon to see if it happens. got up this morning and it started for an hour again. Plumber vacuum tested the new pipework before it went live to check his joints cos i did say "could it be a joint pulling air???" (press...
  2. M

    High pitched whine that rises and falls for hours after central heating has been on

    Hi Stuart, ball valve definitely closing off as it should.
  3. M

    High pitched whine that rises and falls for hours after central heating has been on

    Hi Davy, The tank is still about approx 1m above the radiator as its now in the garage as we moved from he loft. i did expect the rads to fill a little slower due to this but i checked the tank today and its full so its not drawing air in from there & we've set the fill level to max in the tank.
  4. M

    High pitched whine that rises and falls for hours after central heating has been on

    pumps runs on for about 5-10mins after shutdown. I'm pretty sure there's a bypass fitted on the circuit at the boiler. I'll post a pic
  5. M

    High pitched whine that rises and falls for hours after central heating has been on

    Hi All, Recently had a loft conversion done. 2 bedrooms and a bathroom. One large radiator in one room, bathroom has a towel radiator & the other room has one large radiator & a small one on the opposite wall. I obviously expected it would take a bit of time to get rid of the air after a...
  6. M

    2 port valve ,cylinder stat query for hot water

    Thanks SimonH2, your help is appreciated.
  7. M

    2 port valve ,cylinder stat query for hot water

    hi all, mother in law calls to say she has no hot water.eventually find junction box for valves in garage loft.when controller calls for hot water, voltage on cable to valve motor(brown) and nothing happens so i'm assuming motor is not driving the valve and making the contact at micro switch to...
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