1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Stop CH pump from running at night

Discussion in 'Plumbing and Central Heating' started by EBond, 13 Oct 2021.

  1. EBond

    EBond

    Joined:
    13 Oct 2021
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    I have a 532/i boiler....I think.

    The CH pump comes on in the middle of the night and runs continuously for hours. I think it's a feature designed to keep all the rooms at a uniform temperature by redistributing the heat of the rooms. Regardless the noise is awful and keeps me awake, so I want to stop it.

    My boiler doesn't appear to have a screen like a lot of others. So my question is for my boiler (image attached) what is this feature called and how do I stop the pump running?
     

    Attached Files:

  2. Sponsored Links
  3. Exedon

    Exedon

    Joined:
    2 Oct 2021
    Messages:
    103
    Thanks Received:
    28
    Location:
    North Notts/South Yorkshire
    Country:
    United Kingdom
    Room thermostat with back set temperature?
     
  4. EBond

    EBond

    Joined:
    13 Oct 2021
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    I don't think so, the boiler isn't coming on (heating), it's just the CH pump coming on. I also have the thermostat temperature set to 9c at night, but I doubt the house is getting anywhere close to that.
     
  5. kidgreen61

    kidgreen61

    Joined:
    8 Mar 2009
    Messages:
    2,403
    Thanks Received:
    561
    Location:
    Staffordshire
    Country:
    United Kingdom
    Boiler make, model?
    Maybe PCB fault
     
  6. Tricky-Dicky

    Tricky-Dicky

    Joined:
    21 Jun 2021
    Messages:
    45
    Thanks Received:
    15
    Country:
    United Kingdom
    Hi, sounds like a 'frost stat' is being activated. Reduce the night time thermostat to 4c, and see if the pump still cuts in, or disable the night time stat entirely.
     
  7. Sponsored Links
  8. EBond

    EBond

    Joined:
    13 Oct 2021
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    I was able to reduce down to 5c, it won't go down any further than that. There isnt a specified night time mode on the thermostat as far as I can tell, but I set the period that relates to night as 5c.
     
  9. Gasguru

    Gasguru

    Joined:
    9 Sep 2005
    Messages:
    12,422
    Thanks Received:
    3,305
    Location:
    Sussex
    Country:
    United Kingdom
    Why is the case off?...put it back on and make sure it is fitted correctly..it's a safety critical part of the system and prevents the possibility of combustion
    products entering the room especially if it hasn't had a full service (heat exchanger seals, electrodes etc) for many years.
    This is a British Gas badged Worcester CDi model.
    What external boiler controls have you got fitted?
    A pump running continuously on these models is often down to a faulty pump.
     
    • Thanks Thanks x 2
  10. EBond

    EBond

    Joined:
    13 Oct 2021
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    You'll be happy to know the cover is back on.

    The controller is a British gas branded RC plus. The pump doesn't run continuously through the day, just at night.
     
  11. Gasguru

    Gasguru

    Joined:
    9 Sep 2005
    Messages:
    12,422
    Thanks Received:
    3,305
    Location:
    Sussex
    Country:
    United Kingdom
    It looks like that's just a rebadged Drayton Digistat +2 prog room thermostat.
    Where's the boiler located?
     
  12. CBW

    CBW

    Joined:
    26 Sep 2019
    Messages:
    8,934
    Thanks Received:
    2,384
    Location:
    North
    Country:
    United Kingdom
    Worth turning eco function off?
     
Loading...

Share This Page