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combi

  1. J

    Potterton combi gold 28 HE, fault?

    Good afternoon all, I am a commercial gas engineer so little experience with domestic (although fully qualified). I have a problem with a Potterton combi gold whereas I initially had no heating. I looked at the actuator on the diverter which was not driving so for £12:50 I just ordered a new...
  2. G

    Replace leaking hot water cylinder or change to combi boiler?

    Hi, In my 2 bedroom flat I have a Worcester Greenstar 24i boiler and a 200 litre Zip AquaFlow hot water cylinder. The hot water cylinder has started to slowly leak from the bottom and I think it will need completely replaced - quote to replace is around £1000. Given that this is only a 2...
  3. P

    Programming instructions for obsolete combi boiler timer

    Just moved into the house, previous occupant has lost boiler timer instructions. It's a Worcester Bosch 28Cdi combi boiler, with electronic timer number 77161920030. This timer is obsolete, can't find any instructions online, Worcester Bosch have not replied to repeated emails. There are many...
  4. G

    Recommended smart thermostat/controller for ATAG combi (ATAG or Tado)

    Hi all I'm considering getting an ATAG IC Economiser (combi), and to take advantage of the 14 year warranty I need to get one of 2 smart controllers: ATAG One Zone Tado v3+ An annoyance about the Tado is that the UK version doesn't support OpenTherm (unlike the EU model), but this is...
  5. J

    Advice combi boiler plumber says can't fix expansion vessel/access it?

    Hi there, I was wondering if anyone could advise if I should get a different plumber for a 2nd opinion. Basically, my combi boiler is in my attic. It is overpressurised at the moment and the overflow pipe always drips. I had a plumber round, he seemed good and honest and knew the neighbour so...
  6. N

    Combi boiler loosing pressure fast

    Hi all, back again with yet another question about my grant vortex combi boiler 😩 Sorted all previous problems and was running sweet until recently… now it’s loosing pressure really quick, from 1.5 bar down to 0 in a couple of hours (even when on standby neither hot water or central heating...
  7. L

    Combi hot water cycling hot cold hot cold

    Morning all, ok so since having a new Worcester greenstar 8000 combi installed I’ve been struggling to get constant hot water… it runs hot for a minute or two then cold then hot etc. the system has been power flushed, magnacleansed, radiators agitated (very little sludge came out) it has mesh...
  8. C

    Expansion vessel for potable water for a combi boiler

    Hi,a customer of mine has a combi boiler and they don't have an expansion vessel for the potable hot water supply. I know there's an expansion vessel for the closed-loop central heating circuit but I doubt the combi boiler has one for the potable water. I was thinking to put one in the airing...
  9. G

    Is this combi boiler installation within safety regulations?

    I am unsure what are the regulations as to how close the pipework coming out of the bottom of my combi boiler can be to the electrical fuse spur? Also, how close can the magna flow be to the electric cable? At present water drips from the pipes coming out of the bottom of the combi boiler onto...
  10. J

    System or Combi in local pub?

    23 rads and one kitchen hot water supply plus two basins in toilets. Had an old Concorde system boiler which gave up. Two zones supplying two large rooms 50' x 12' x 24' each. Local heating company recommended Nevien 42kw combi boiler and things went wrong after that. The installers have made...
  11. G

    U6 Gas meter usage to combi bolier

    Good morning, I have a U6 gas meter (ft3) supplying a worcester greenstar combi boiler. It is currently using about 1.2 ft3 of gas per hour with the central heating on. Is this a normal amount. The reason I ask if I have just had a 41 day bill of £400. The home is in Scotland and we have only...
  12. M

    Single pipe system new combi boiler

    Hi everyone. I’m a homeowner, in essence when we moved in we weren’t aware that our house was a single pipe system we have now found out after the water cylinder has packed in and developed a leak. We have had a Heating engineer round who has advised us to fit a combi boiler doing away with the...
  13. A

    Do you have balance hot and cold water pressure with a combi boiler?

    So getting a digital shower and it says the hot and cold water should be balanced. Am I right in thinking they should already be balanced with the hot taking on the cold pressure entering the boiler or am I way off? Cheers
  14. C

    Replacing boiler for combi how shower will connect

    We have a traditional hot water tank with pumps in loft , the hot water I assume goes up into the loft from the hot water tank and the pumps pump it out at a decent rate. If we go for a combi how would this work as feb hot water would come from the boiler?
  15. M

    Central heating issue on Logic Combi ESP1 35

    Hi, I noticed the pressure this morning on my boiler was just below 1bar so I went to top it up, opened the loop and it just managed to hit over 1bar then just stopped increasing. Now the central heating looks like its on but all the radiators are luke warm even when temperature is 70 degrees...
  16. M

    Advice on electric combi

    Hi , can someone give me good advice on what electric combi boiler to buy , I have 7 large radiators one in each room , I'm after good all rounder , price and kw use , , thank you
  17. J

    Combi OUT -> HIU IN - Pros/Cons

    Hi all, appreciate experts feedback in advance! Currently have Combi in my flat for hot water and heating (water UFH). Thinking to change combi with HIU, what are the main pros /cons?
  18. M

    Baxi Combi Boiler (Duo Tec) - water not heating

    Hi all I’m having a problem with my Baxi combi boiler and wondering if anyone is able to help. In short, the water isn't heating. A few months ago (c.2 months) my Baxi combi boiler had an issue where the hot water would go hot and cold on a regular cycle; it would get hot, then cool down, then...
  19. T

    Combi boiler flame loss during current windy weather

    Hi, I have an ideal logic plus combi boiler that has been working fine for all of winter. With the recent storms when the wind speed starts getting up the boiler keeps cutting out with a "Flame loss" error. It'll reignite first time no problem and then continue until a large wind gust then...
  20. D

    Nest connections to electric combi boiler.

    Hi, I moved into a house with a Trianco Maxi Aztec wet electric combi boiler. The system is too expensive for us to run, so we are removing in 3/4 weeks. Aside from being too expensive, it is not running correctly... We have to call for hot water about 25 minutes prior to use (this is not a...

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