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alpha

  1. T

    Alpha CB28X CH turning on with no demand

    Can anybody advise please. The boiler is set to HW only but the radiators are being heated - the burner is staying on all the time. Tried turning CH thermostat to zero but makes no difference. HW working fine. Any advice would be much appreciated.
  2. D

    alpha intek 28x

    Fitted an alpha intek 28x today should have been a straight forward combi swap, it took 7hrs. The Flue connections were awful, the pipework was not the standard f hw g cold r and I couldnt get the zone valves and salus unit to wire in and work. Ended up sticking a standard room stat on and...
  3. G

    Alpha CD25X - No central heating

    Hi, I had an Alpha CD25X installed at home nearly 3 years ago but last week it ceased to provide central heating although the hot water is working fine. The pressure on the gauge is fine, there are no error lights but even if I turn the CH temperature up to max and turn up the thermostat the CH...
    • G1ZmO
    • Thread
    • alpha central central heating heating
    • Replies: 2
    • Forum: Central Heating Forum
  4. N

    Knackered alpha cb28

    Hoping someone else has come across this before, got sent to a hw fault on a alpha cb28 so took dv,washer set plus micro switch. Found when i got there there had not been hw 3 months and htg was hit and miss. Typical alpha it was leaking everywhere could not find a dry joint in the boiler a...
  5. L

    Alpha cd28x

    Hello i have an alpha cd28x combination boiler and the hot water seams to initially be fine then runs cold after a few moments. The boiler then has all four lights flashing on the panel and I need to reset the boiler to be able to get and hot water. Any help please as to what could be the...
  6. M

    Alpha c23 - gas valve not opening...

    As above - going through full sequence - but not lighting -sparks ok - changed gas valve - no joy - take it it's the board?
  7. X

    Alpha Vertical Flue Terminal FS

    Bought one of these a couple of weeks ago as I had a lad installing the god forsaken Alpha Intec 24x boiler (client wanted cheap and that's simply what we came up with). We've pretty much vowed to go back to using Vaillant (cheap option: Ideal). Although if you actually enjoy installing these...
  8. J

    alpha intec 28 x

    hi lads whilst setting c02 settings on boiler high setting 0f 9.45 sets no probs but whilst trying to get low to 8.6 setting boiler cuts out around 8.9 turn setting back up slightly reset boiler and boiler runs no probs c0/c02 ratio is 0.0007 going back to try again any advise would be great...
  9. J

    alpha intec 28x

    hi lads could do with a bit advise on setting c02 on low setting high setting 9.45 no probs but boiler cuts out at 8.9 when trying to achieve the 8.6 setting. the c0/c02 ratio is 0.0007 at mo but not happy with c02 setting any advise would be great cheers john.
  10. J

    Alpha cd24r help!

    Hi i fitted a alpha last week, a heat only y plan system boiler. This was a replacement for a old heat only. And I can only get hot water if I have the heating on! I think it might be the 3 port valve but just need a second opinion. Can someone please help me as the customer is not happy. I...
  11. H

    Alpha Man - Help needed!!

    Hi, I have an Alpha CD24C which wasn't providing hot water unless the central heating was turned on. I read loads of other threads and figured out the flow switch was working fine so I went ahead and changed the diaphragm. I also replaced the old white thermistor for a newer black one...
  12. Hibster

    Alpha c23 overheat fault.

    Boiler goes to overheat (flashing red at A indicator) but heat is getting out of boiler with out any problem. Have changed both temperature sensors and overheat stat but still does it. Doesn't happen all the time and can cut in and out for long periods without problem. Any ideas? Gas safe...
  13. D

    Alpha CD28 boiler - pressure loss

    Hi all - in need of advice I am experiencing a pressure loss on my Alpha boiler on a daily basis. There is a constant dripping coming out of a copper pipe on the outside of my house - I think this is the pipework from the pressure relief pipework. The boiler works ok but because of this leak...
  14. K

    Alpha CB24, red light, no function

    When I turn on my boiler, it starts off like it is working but not long after it switches off and then the red light turns on. I currently have no heating/warm water...
  15. Z

    Vertical Flue Terminal Alpha Combi

    I've got a broken cap on my vertical flue terminator. Need to have this fixed, before it lets in lots of rain! South Lanarkshire, near Hamilton.
  16. D

    Alpha CB 24

    Hi Gents, I am looking for some advice on a mysterious fault on an above boiler. My first suspicion is that the fairly new PCB has went belly up again. It got changed last September. Giving the boiler a second life but obviously not for very long. Basically the boiler goes randomly to lock out...
  17. A

    Alpha cb 24 x pressure problem help

    Hi. I have an alpha cb 24 x boiler the problem is every few days the 2 neons start flashing and the boiler wont come on which indicates a pressure fault. The pressure is always in the green and deosnt go down. Yet i need to top it up to get it back on. I need to do this at least once a week...
  18. Deleted member 32524

    Question for Alpha man on warranty.

    Been looking at an alpha for a customer needing a combi somewhere about 25-28kw. been pointed at 26 c intec priced at £856 inc flue. Also one says 8yr warranty then the other says no 5 yr. also what is the deal with the 28x intec. less warranty? cheers in advance.
  19. M

    Alpha CB28 Hot Water Problem

    Hi Guys, called to investigate an intermittent 'no hot water' on the above so went armed with a new clip on microswitch thinking nice quick job to end the day. Wrong! Opened tap and pulled switch off boiler fired fine so me thinks diaphragm as pin seemed not to be moving. I've overhauled...
  20. M

    Newbie help with an Alpha cb24x - overheat LED flashing

    Hi all, I have been searching for a solution to my problem, but to no real avail, so am posting hoping someone can help. I have an Alpha cb24x combi boiler, which for years worked with no problems. Initially when I moved in it was "on show" but about 4 years ago I had the kitchen refurbed and...

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