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Reteplav
 
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Default Alpha Combi Boiler CB24

My daughter has an Alpha CB24 Combi boiler fitted and it`s got a problem

..It intermittently will not fire-up either on Hot Water or Central heating, or
when it does work it will suddenly shut down.

I had a look at it and the Domestic Hot Water (DHW) flow valve microswitch was
suspect.
I`ve changed it and all was well.....for nearly an hour ...then back to square
one...nothing fires-up again for at least 5 minutes.. ( I suspect that this
might be due to preprogrammed delays built into this system??)

I`ve got more info but the first question to ask is does anyone know anything
about Alpha boilers and the sequence of events that makes this boiler fireup.

ie. Which sequence the switches and sensors (temperature etc.) . come
"into-play".

This boiler is not 3 years old and it`s already had a new pressure switch
before I fitted this flow switch.


Failing getting an answer re this Alpha brand , can anyone recommend a decent
AND reliable combi boiler.(....if there IS such a beast !!! )

{)

TIA


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Hellraiser
 
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Default Alpha Combi Boiler CB24


"Reteplav" wrote in message
...
My daughter has an Alpha CB24 Combi boiler fitted and it`s got a problem

.It intermittently will not fire-up either on Hot Water or Central

heating, or
when it does work it will suddenly shut down.

I had a look at it and the Domestic Hot Water (DHW) flow valve microswitch

was
suspect.
I`ve changed it and all was well.....for nearly an hour ...then back to

square
one...nothing fires-up again for at least 5 minutes.. ( I suspect that

this
might be due to preprogrammed delays built into this system??)



www.alpha-boilers.com Go there, they have user and installation manuals as
well as technical info with regard to their boilers - might be something of
use there.

Hellraiser..............


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Junior Member
 
Posts: 1
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Quote:
Originally Posted by Reteplav
My daughter has an Alpha CB24 Combi boiler fitted and it`s got a problem

..It intermittently will not fire-up either on Hot Water or Central heating, or
when it does work it will suddenly shut down.

I had a look at it and the Domestic Hot Water (DHW) flow valve microswitch was
suspect.
I`ve changed it and all was well.....for nearly an hour ...then back to square
one...nothing fires-up again for at least 5 minutes.. ( I suspect that this
might be due to preprogrammed delays built into this system??)

I`ve got more info but the first question to ask is does anyone know anything
about Alpha boilers and the sequence of events that makes this boiler fireup.

ie. Which sequence the switches and sensors (temperature etc.) . come
"into-play".

This boiler is not 3 years old and it`s already had a new pressure switch
before I fitted this flow switch.


Failing getting an answer re this Alpha brand , can anyone recommend a decent
AND reliable combi boiler.(....if there IS such a beast !!! )

{)

TIA
Hi There..I have the same boiler with the same problems. I contacted Alpha Boilers direct and spoke to their technical guy. After explaining the problem he told me that it was the Temperature Sensor that needed to be changed. It is possible that it was suppering from hard water limescale. Does the "B" light flash continously? If so that the problem.
Cost about a tenner for the part.

Hope this helps...GA
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