I have an Alpha HE CB25/33 boiler?

Hi
Water comes out very hot then droppes to lukewarm realy quickly and stayes that way. No problem with radiators they are running at a constant temperature.
Any ideas?

Paul Wright
March 2015

central heating shuts off after 2 minutes the cums back on after 5 minutes then same again

dave
December 2012

ive just had a diaphram fitted and a flow switch but the boiler is still the same

dav
October 2011

Its the diaphram most likely but you should get someone Gas Safe registered to check it out. There is a good reason why we do all the training and reassessing that we have to do.

Heat Matters
December 2009

i think it mite be the DHW flow switch, really easy to fit your self no screws. go to the alpha web site and down load the installation and servicing manual.

good luck

sheldon
May 2008

its your flow sensor on the hot water side of things

cooldude
May 2008

I'm in the exactly same position with a HE CB25. I'm awaiting a call from a plumber for the solution. This actually started to occur once in a while soon after we had it installed but was told it was related to low water pressure (which it isn't). I'll let you know the out come - if you get any answers my email is danielmcnulty@talktalk.net. Thanks

Daniel McNulty
January 2008