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  1. P

    Combi boiler: my hot water has started running lukewarm.

    I have a Combi boiler and, a few minutes ago I turned on the hot tap in the kitchen and the water was far from hot. In fact, it was decidedly lukewarm. I checked the boiler and the tap icon was lit up, showing it was delivering hot water to the taps and I could hear the boiler running and the...
  2. Z

    Baxi duo tec combi 24 HE A Boiler de-aeration

    Hi everyone, I wanted to ask is there a function to remove air from a Baxi duo tec combi 24 HE A. If there is can some one kindly tell me the procedure. Looking online i found on newer baxi boilers that you turn the heating knob all the way back (12-oclock) anti-clockwise and then 2 quarter...
  3. C

    Main combi 30 HE Safety thermostat

    Hi All, I have the boiler above and the safety thermostat has snapped at the plastic cable right where it means the thermostat. This looks like it was originally all one part but can’t find the replacement harness and thermostat only the thermostat on its own with two electrical connections...
  4. Ant0912

    Flow & Return firebird C26 combi oil boiler

    Hi, can anyone tell me which pipes are flow and return please. I removed old leaking 2008 C26 firebird oil boiler in June . We have now completed damp proofing works & I need to extend these 4 pipes to go through the wall and into a new boiler room. This area will then be stud wall and...
  5. B

    which gas combi replacement advice

    Hi everyone, Just a query about what size in KW gas combi boiler do I need for a top floor flat (3rd floor). I have a Vokera Easi heat plus (20kW) gas combi boiler and it does the job, the radiators never go as hot as the should for example there are ten dots on the heat dial but the radiators...
  6. F

    External combi filter questions

    Hi All, My mum had a Worcester green Star 4000 fitted on one of those eco grants. A external filter wasn't fitted. Should this have been fitted or is it deemed a good to have item so not under any regulations? Thanks
  7. N

    Combi boiler install doesn't seem quite right.

    I've just had a back boiler removed and combi boiler installed and have noticed that my radiators are heating up when using the hot water. I've been told this is due to the residual heat being moved around the system once the hot water is satisfied. But the radiators are heating up as soon as i...
  8. J

    Help with potterton combi boiler bangs when cooling down

    My boiler constantly bangs after its been shutdown for an hour or so..sometimes it's 5 or 6 getting shallower other times it's a few more 10 to 12.Its always after I've Ean the hot water on my potterton combi boiler. I live in uk and would love some help with this annoying issue. Thanks.. Jon
  9. J

    Vokera combi advice please.

    I need to change some leaking valves and fit another radiator to the system. How long can I safely leave the boiler off and drained before there's an issue with the pump? It purges everyday at roughly the same time, but I doubt I'd get all the work done before it's next purge. It was left...
  10. I

    Water Softener advice now I've moved to combi boiler

    Hi, We have a Kinetico 2020c HE Water Softener, fitted in 2008 in our loft to the cold water tank in a vented system with a conventional boiler. All good, was working fine. Recently our old Potterton Suprima conventional boiler packed up and we decided to change to a Vaillant EcoTec COMBI...
  11. F

    Oil Combi Boiler Hot/Cold/Hot

    Hello. I have an oil fuelled combi boiler and the hot water starts hot, then goes cold for a few seconds and then back to hot... Is this right? Thank you.
  12. P

    Ideal Logic Combi 35 constant F1 fault

    Got up on Wednesday morning no hot water, (only cold water coming out of hot tap). Checked boiler, it had zero pressure and F1 fault showing. So I refilled the pressure using the filling loop, up to about 1bar which is where it usually is, which worked fine, had hot water all day. Same thing...
  13. S

    Mixing Vertical and Horizontal Combi Flue

    My installation has been classed as Dangerous 'Do not use' by my boiler manufacturer. I have an Ideal Logic 30kw Combi boiler mounted as high as can be on the kitchen wall. Flue exits out through the wall via an elbow but emerges above a flat roof. Unfortunately it's somewhat less than the...
  14. M

    New Boiler advice - System or Combi?

    I am currently in the middle of a complete rennovation of my house and need some advice on what kind of boiler to get. The house will have 4 bathrooms in total. One on the ground floor (shower), two on the 1st floor (en suite has a shower and family bathroom has a bathtub and seperate shower)...
    • MichaelT
    • Thread
    • boiler combi new boiler system
    • Replies: 5
    • Forum: Boiler Advice Forum
  15. C

    Water Pressure with mixer valve/combi

    I'm in the process of refurbishing my bathroom. I'll be replacing the existing bath with a walk in shower. Will be installing a thermostatic mixer valve fed by mains on the cold side and a combi boiler (Logic Combi c30) for thr hot. Ideally what I'd like to do is have the mixer valve at the...
  16. F

    Pressure issues Ideal Logic Combi 30

    Hi, We have a new Ideal Logic Combi 30. A radiator today came off the wall and developed a leak. Plumber came and fixed (but didn't). At that time the boiler was fine. Today the boiler has lost pressure. I have followed the videos on yt and nothing works. Just stays telling me F1. I have...
    • FrankMcg
    • Thread
    • combi ideal ideal logic logic pressure
    • Replies: 6
    • Forum: UK Plumbers Forums
  17. A

    mains pressure lower than minimum combi system pressure

    We have a vaillant combi boiler that over ~ 2yrs loses a bit of pressure, and recently after 2 weeks away and no use the system would not fire and errored with F75. We attempted to refill, but the mains pressure is only 1.0bar, and the combi needs more than that to light. I ended up removing...
  18. A

    Heatline combi boiler

    I have a heatline vizo 24 combi boiler that starts up for a few seconds and then shuts off. This happens with both hot water and heating. If left all overnight or all day it will work first time and stay on. If tried again soon after the problem comes back.
  19. I

    Combi boiler question regarding usage with no pressure

    Hi, just a quick question. Do I need to fill my combi boiler to run it for hot tap water only? I'm planning to drain the system and leave it drained a while so I can decorate and change some pipes and rads.
    • Iwillhaveago
    • Thread
    • boiler combi combi boiler pressure
    • Replies: 1
    • Forum: Boiler Advice Forum
  20. J

    Obsolete parts worcester combi 35 cdi

    Hi everyone, I have been searching the Web for a spare part for a Worcester 35 cdi ng boiler that is obsolete. I can't find one anywhere and its looking more and more likely I'm doomed . The part is the door extrusion seal 87161031280. I have sold my house STC and this has just happened , so...

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