Recent content by ecrepepitude

  1. E

    Alpha CB28 Intermittent/cycling Hot Water

    And it works!!!! The first good hot shower in ages!!! My wife is very pleased Many thanks to all of you who put forward suggestions, Kind Regards to everyone Bill
  2. E

    Alpha CB28 Intermittent/cycling Hot Water

    OK Got lots of black bits out of HX using a combination of Sludge Remover,91% solution of Sulphuric Acid,Water pressure and tapping with a small hammer, NOT all at the same time!(BE CAREFUL WITH ACIDS!) Have reassembled system refilled using the rest of the sludge remover and I am...
  3. E

    Alpha CB28 Intermittent/cycling Hot Water

    OK Finally got HX off There is Black Gunk inside Question is ..... What do I clean it out with ? Regards
  4. E

    Alpha CB28 Intermittent/cycling Hot Water

    Hi Paul Yes the behaviour is exactly the same with the switch shorted Thanks for the info I will give it a try when my Wife okays the lack of hot water for a day or half a day (may take some time) Regards
  5. E

    Alpha CB28 Intermittent/cycling Hot Water

    Thanks again I will remove and check the DHW HX and the diverter valve assy. As these are the only things I can do Already proved the switch by shorting. Regards
  6. E

    Alpha CB28 Intermittent/cycling Hot Water

    Thanks for your help Guys The references to a thermistor interests me are we talking temperature sensors here? If so which one? As far as I know the DHW H/X is as clean as a whistle. Cheers
  7. E

    Alpha CB28 Intermittent/cycling Hot Water

    I have an Alpha CB28 about 4 years old. Heating works fine but when drawing hot water the burner cycles on and off. The off time for the burner is always about 10.5 seconds The on time varies when tested but is always the same for that test i.e. 22 secs on 10.5 off 22 secs on...
Back
Top