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combi

  1. R

    Most Reliable combi Gas boiler (25KW)

    Been a retired plumber now for almost 20 years so a bit out of touch with the trade. I am wanting to replace a combi boiler . What is the most reliable and cheapest boiler to install, I would welcome any comments on those so called 5/10 year warranties that are given out. I would prefer...
  2. J

    UFH and Rad Pipework Layout From Combi.

    Hello I'm new to the forum and wanted to ask a question after having a good read. House is undergoing a complete renovation and new pipework needs to be installed for the heating system. The current boiler is a WB Greenstar 34CDI combi boiler and is not very old so I wanted to reuse this in a...
  3. I

    Main combi eco 30 pump overrun

    Hi, I have noticed recently that when the central heating, set at 60 on boiler, goes off the pump no longer overruns for the period of 3 minutes like it always has. Is this a problem? With the dhw it does the 1 minute overrun still. Thanks.
  4. S

    Camray 5 Combi Oil Boiler locks out on hot water demand

    Having a few issues with my combi boiler, its 14 years old now and due to be replaced as we are building extension, but need to get another 10 months out of the combi yet! Was having pressure and lockout issues and the relief vale had activated couple times, expansion tank is fuel of water so I...
    • Seumas
    • Thread
    • boiler combi hot water oil boiler water
    • Replies: 3
    • Forum: Boiler Advice Forum
  5. W

    Ideal Logic Combi 35

    Hi all, I've got a bit of a strange issue relating to my Ideal Logic Combi 35 which has recently started displaying a F2 error when trying to use the central heating system. The boiler works fine when using hot water, however when I try to turn on the central heating system the boiler works...
  6. P

    Intermittent hot water problem wb combi

    WB combi has recently had it's annual service. It has been working reliably up to that point for many years. Now we keep losing hot water - temps on boiler increase over 100 on the display and it shuts down heat. Engineer claims it's coincidental and must be a blocked heat exchanger that has...
  7. J

    Storage Combi Boilers

    Do gas fired storage combi boilers store the water at high temperatures like say 75C? and if so do they have a internal TMV?. when the storage runs out presume they then just carry on like any combi boiler?. Do they allways store DHW and not primary water?. Oil fired combis probably are all...
  8. R

    Hot water coming on combi sometimes other times not

    Hi guys thankfully not been needing to com on for a while but could do with a pointer. 2 weeks ago I noticed boiler didn’t fire for hot water in kitchen which is next to boiler and cold main in, it came on after a few seconds longer than norm I thought just a blip, but this weekend and since...
  9. P

    Combi sys losing pressure every 2 days 4 months but no sign of leak

    Combi boiler system losing pressure every 2 days. We've been topping it up for months now and have had various radiators replaced and flooring pulled up downstairs around each of the radiators but so far no leaks have been found. I'm at a bit of a loss of where the leak can be because given...
  10. R

    Baxi 228 combi boiler hot water flow rate poor?

    Hi, Just checking I'm not talking rot. Today I visited a house with a Baxi 228 combi boiler. The technical spec for the DHW output is shown in the image. Boiler was installed 27 months ago. Baxi is claiming 13.3 litres @ DT 30. I set the boiler DHW temperature to a high setting. I was...
  11. S

    Baxi Combi 105e: CH lost 1 bar of pressure in a few hours

    Hi everyone Summary is in the title. Found the boiler was at 0.5 bar earlier today so topped up to 1.5 bar. Checked before bed and its back to 0.5 bar. There are no signs of a leak around any radiators nor any suspicious water damage on the downstairs ceiling. Before I rip up all the flooring...
  12. S

    Ideal Logic Combi 30 - pump only keeps activating for 4 mins.

    Hi, As per the thread title, I have an Ideal Logic Combi 30 and I am having a problem with the pump, which keeps activating without any DHW/DCH. When the pump activates, it runs for exactly 4 minutes each time and this can happen as frequently as something like 5 times an hour or as...
  13. E

    Good afternoon , Can any one age this combi boiler ? TIA

  14. P

    Mystery Worcester Bosch Combi Status Code 265.

    Can anyone please explain why my 12 month old WB Greenstar 28CDi Compact ErP Combi with fascia mounted Comfort ll room stat continually stalls with a 265 Status Code "Stand-by mode forced due to energy transfer limit", causing it to take twice as long to reach the set room temperature than it...
  15. P

    Baxi Duo-Tec Combi 33 HE DHW Fault

    Hello, Looking for someone who can please help solve this problem and fix our boiler. Staffs area. CH seems fine. Boiler can be coaxed into full burn with the fan spinning at full speed, so I think everythings fine on the gas/air/flue/condensate side of things. If there is DHW demand on the...
  16. J

    unvented cylinder v combi store

    Hi all, My customer is renovating a house. Complete renovation of the plumbing. It's a three-bed house for a young family of 3. It will have one main bathroom (bath and maybe an over-bath shower), plus two shower ensuites. I have yet to check the incoming water pressures/flow rates to the...
  17. C

    Combi boiler into existing wood burner system

    My parents house has a wood burning stove that is also connected to the central heating ( they have radiators and used to have an old boiler which they took out and replaced with the wood burner ) so the wood burner can also heat water which can then be pumped round the rads and works fine when...
    • Christopher644
    • Thread
    • boiler burner combi combi boiler system
    • Replies: 3
    • Forum: Boiler Advice Forum
  18. F

    Ideal 25kw combi boiler issue No heating Just hot water

    I wish to thank the boiler guy for disconnecting Hive for me from the combi boiler. You did a wonderful job of cutting off the heating bit, so now I cannot heat the house but still have lovely hot water coming out of the taps, So luckily I have moved my 76-year-old father out of the house. Turns...
  19. D

    Worcester Greenstar 30 Cdi Combi loss of CH & HW -overheating

    Hi all, 12 year old boiler, regularly serviced working fine, then wife turned on hot water and it stopped working. Same then with CH. Left it for a while worked and then stopped again. I looked at it when got home and when run water boilersstarts up, temp rises and then it cuts out. Same with...
  20. J

    Vaillant Ecotec Exclusive Green IQ 835 combi modulation problem

    Hello, We got a Vaillant Ecotec Exclusive Green IQ 835 combi boiler in November 2021 as we wanted the most efficient boiler that modulated really well, especially for heating. Two weeks after the installation, the heating engineer needed to recalibrate the boiler and after that we started...

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