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Recent contents Top users
  1. H

    Called out to fault on Alpha HE 33. New Fan Installed.

    Hi guys. First post on here. Called out to fault on Alpha HE 33. Fast blow fuse found to have blown. Faulty fan found to be problem. New fan installed and tested. Four days later and a call from customer to say boiler not working again. fast blow fuse found to have gone again. Replaced and gone...
  2. P

    Alpha CB25 pressure rise problem

    Hello everyone, I have a problem with our Alpha CB25 boiler. Problem is little bit complicated to me. We have had a problem with hot water this summer. I changed two parts like heat exchanger and I refurberd divert valve. We always have problem with low pressure I have to fill it up the...
  3. C

    Problem with Alpha E-Tec 28

    Hello, I have a Alpha etec 28 boiler, and getting the Error10 signal at the moment. I know I have to repressurise but I can't find the right valves to to this. Can anyone help please?? I have opened the cupboard beneath the boiler too but not sure what to touch. Thanks!
  4. R

    Faulty GRUNDFOS ALPHA2 L 15-60 130 replace with Grundfos Alpha 1 15-50/60

    My GRUNDFOS ALPHA2 L 15-60 has developed a fault and I'm struggling to find a replacement to enable a simple swap. Would the Grundfos Alpha 1 15-50/60 be a suitable alternative? I'm hoping to simply remove the faulty one and install this without having to do any further work! Many thanks in...
  5. M

    Grundfos Alpha 2 AutoAdapt is slow

    Hi folks be glad of some help with this as its puzzling me.🤔 I have an Alpha 2 15-60-130 pump serving 12 Rads with thermo valves and Hot Water cylinder. The boiler is an Alpha CD18R Since I had another rad installed downstairs I've noticed the heating pump has been noisier than usual ie...
  6. L

    Alpha Boiler problems can't solve

    We have a Alpha Cd25C boiler. The heating went off around 6 weeks ago although we've been able to reset (either by switch or running hot water). We've had a plumber our 5 times and changed Bypass Pump Thermister Cut flue pipe This has not solved the problem. We get heating if we leave the...
    • Lee801
    • Thread
    • alpha boiler
    • Replies: 0
    • Forum: Boilers
  7. gingalig

    Alpha intec 18 pcb change

    Hi, thanks for any advice, I'm about to change the pcb on an alpha intec system boiler. The fault code suggests intermittent voltage supply. Visually the case is brown stained almost directly where the transformer is located and a resistor looks like it's been getting very hot on the board. Are...
  8. P

    Alpha Combi Boiler Eco 2 Plus and Thermostat.

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
    • P. R. GRANT
    • Thread
    • alpha boiler combi combi boiler plus thermostat
    • Replies: 2
    • Forum: Boilers
  9. P

    Alpha Combi Boiler Settings

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
    • P. R. GRANT
    • Thread
    • alpha boiler combi combi boiler
    • Replies: 0
    • Forum: Boilers
  10. R

    Grundfos Alpha 2 does not self prime

    I have replaced a 15 year old Alpha + with a Alpha 2 15-60. It is positioned 1.5m above the boiler( feeding a 10 rads and hot water on S plan), in the attic with a 0.5m head from a header tank. I am having great difficulty getting the new pump to self bleed. Setting it to constant fastest speed...
  11. M

    Anybody installed an alpha e-tec

    Got one to fit in a couple of weeks wondered if anybody had fitted one and what they are like to fit?
  12. J

    Alpha Boiler with 13 Year Guarantee

    Evening Gents! Just seen that Alpha are offering a 13 year guarantee on the E Tec Plus Combi boiler when you fit their Premierpack (Jig and filter combination). I am all about the longest warranty for the cheapest price....but..... Well. What is the opinion of Alpha here? I generally fit...
    • Jerry
    • Thread
    • alpha boiler
    • Replies: 11
    • Forum: Boilers
  13. SlimD

    Alpha Intec 28X intermittent heating.

    Anyone familiar with alphas? Not worked on one before. I had one a couple of days ago that had no heating but DHW was working ok. Problem started out intermittent then got worse until it didn't work at all. Heating would heat up the flow to max then shut down quite quickly until temp dropped...
  14. A

    Alpha InTec 24X - Pressure

    Our boiler keeps losing pressure so I thought maybe we could repressurise ourselves to save the landlord coming out to fix it, since it could be a couple of days before he can. However I cant seem to find any taps/valves in order to do so. I've looked at videos for help but everyone else seems...
  15. J

    Fan fault (red & green flashing) on my alpha HE CB33 and dropping pressure...any ideas?

    Hi guys... I have a alpha HE CB33 and it’s dropping pressure and coming up with error code (blocked flu or fan fault) any ideas?
  16. H

    Grundfos Alpha 3 Pump Settings for Hydronic Balancing

    Hi Forum, I am attempting to manually balance the radiators in my house, to get an average of 11c drop between Flow and Return on each radiator. I have set the boiler temprature to 65c. With the Grundfos Alpha 3, it has several control modes, with each mode needing a value set: Constant...
  17. S

    Alpha cd24c, intermittent ignition failure.

    Morning all. Just to let you know I’m an installer rather than a breakdown/repair engineer, im after a bit of advice please! Boiler in my house is an Alpha cd24c! 3 times over the last 2 months the boiler has gone to lockout, 3rd time being this morning! Reset boiler and all is fine, obviously...
  18. C

    hi all,i have a alpha intec 28x which will fire in test mode

    Hi, the boiler is a alpha intec 28x which will work in test mode but not in normal mode and it gives plenty of hot water
  19. D

    Alpha CD32C pressure to high, need help

    Yesterday my boiler's pressure gauge suddenly shot up to 3 bars (it has never done this before). I turned it off and started to bleed the kitchen radiator, this only brought it down to 2 bars. I also noticed that the overflow pipe is leaking a lot so i turned the water off entirely. This brought...
  20. G

    Pressure problem with alpha cb25

    From cold boiler pressure shoots up in seconds and dumps through prv whether hot water or heating. If you persevere with heating and get it running even on very low heat all settles down and boiler works fine, heating and hot water. Let system go cold and run hot water and system dumps again. I...
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