Alpha Combi (HE CB 25/33)

May 07, 2016 8 Replies

My daughter has one - sometimes it fails with no obvious fault being displayed - just the mains indicator blinking every 5 secs.



Not wanting to get too involved, but I was thinking of checking the following:



The Condensate Drain.



The seal around the front cover of the combustion chamber.


Does anyone have any experience and could offer any other things to check? Something seems to be preventing it from starting - or the start-up is failing.


Same boiler and daughter you posted about on the 1st?:-)

Yup - not many people with experience around, it would seem.

Isn't that the low pressure warning?

Chris Bartram wrote in news:ngl2mj$p3m$1 @dont-email.me:

The book suggests it means Mains On. if it is a flash every 5 seconds.

Probably because dribble used to eulogise about Alpha boilers all the time - made sure none of us bought one! ;-)

Having said that, Alpha have a front panel lights diagnostic pager here:

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Pressure would be the first obvious thing to check.

What ever happened to him? We don't see Maxi often either! LOL

John Rumm wrote in news: snipped-for-privacy@brightview.co.uk:

Pressure is fine: Flashing "B" every 5 seconds means:

Electrical supply to the boiler is on (Flashing yellow B indicator) no action required

Update - Checked the pump is on speed 3. Checked the front of the combustion chamber is properly fitted and seal is in good order. Fan is working.

Just wondering - is the pump over-run not cutting out after 4 mins. If so could this prevent the ignition sequence (I don't think so)

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