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
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...
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
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
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
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...