On 07/01/2013 14:44, Chris wrote:
On 07/01/2013 12:31 PM, Andrew May wrote:
On 07/01/2013 11:36, Chris wrote:
Hi,

I have a Baxi 80 HE plus which firstly works fine for the hot water
system.

However for the central heating several times a week, the Central
heating does not come on as per timer controls. Although the lights on
the timer control light up as expected when the timer is set to swich
the heating on, the boiler does not fire.

However with several goes at switching the timer control on and off e.g.
clicking advance or boost and pressing the reset button on the boiler ,
the Central heating will eventually fire up ( 2 green lights) and stay
on until the timer control switches it off later in the evening.

There are no red fault lights showing on the boiler when it doesn't
fire- in fact when it doesn't fire up there are no green lights either
showing on the boiler.

The pressurised system is just over 1 bar.

Any ideas if this is more likely to be a timing control (Drayton Tempus
7) which I could easily get replaced or a boiler problem ( lots of
money)!

Thanks for any help

Chris


Are you sure that the boiler doesn't fire or does it fire but then go
out. The later might indicate that the flame sensor is not working as it
should.

Thanks for the replies it's given me somehwere to start

Cheers

Not that I understand these things but my previous boiler (not sure
which name) had a problem of not coming on and I traced it to a kink in
the condensate tube, I believe there is a pressure switch on some models
and this kept the boiler from firing intermittently when it had water in it.