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

"Chris" wrote in message
...
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

My pressure is 1.5 bar.
Worth a go?

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


You can download a Baxi HE diagnostic chart, it will tell you if red,
green. flashing or no lights has a reason.
I used it to find out one of temp sensor faulty ...

If you can't find it on Baxi ... ping me a PM and I'll email you a copy
.... at least it may tell what is at fault Boiler or timer.

If it were me and it was due to com on and hadn't I check across timer
contacts ... but that depends how you feel about testing such things.

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.

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

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.

If you are saying that even a manual start will not start it and there are
no errors, then assuming you are attempting to start it from the control,
surely this means the control is not telling the boiler to start hence no
errors, or did I miss something, its been a funny weekend.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Mr Pounder" wrote in message
...

"Chris" wrote in message
...
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

My pressure is 1.5 bar.
Worth a go?

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 there any motorised valves in the system? If so, you could have a
problem with one of those. Assuming that your boiler isn't a combi (I'm
not familiar with the model, so I don't know) you may have a motorised
valve for each heating and hot water zone. If it's an S-Plan system, the
timer/room stat will control the valve and the valve will switch the
boiler on when it's open. So if the valve doesn't open, or if it does
open but its auxiliary switches don't work, you'll get no heating.

Could this be your problem?
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

Roger Mills 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 there any motorised valves in the system? If so, you could have a
problem with one of those. Assuming that your boiler isn't a combi
(I'm not familiar with the model, so I don't know) you may have a
motorised valve for each heating and hot water zone. If it's an
S-Plan system, the timer/room stat will control the valve and the
valve will switch the boiler on when it's open. So if the valve
doesn't open, or if it does open but its auxiliary switches don't
work, you'll get no heating.
Could this be your problem?

I'll raise your 2 port valve with a faulty mid position valve:-)

--
Adam

On 07/01/2013 18:58, ARW wrote:
Roger Mills 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 there any motorised valves in the system? If so, you could have a
problem with one of those. Assuming that your boiler isn't a combi
(I'm not familiar with the model, so I don't know) you may have a
motorised valve for each heating and hot water zone. If it's an
S-Plan system, the timer/room stat will control the valve and the
valve will switch the boiler on when it's open. So if the valve
doesn't open, or if it does open but its auxiliary switches don't
work, you'll get no heating.
Could this be your problem?

I'll raise your 2 port valve with a faulty mid position valve:-)


Yes, indeed. If it's a Y-Plan system, an intermittent problem with the
3-port mid-position valve could well cause the OP's symptoms.
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

Roger Mills posted
On 07/01/2013 18:58, ARW wrote:
Roger Mills 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 there any motorised valves in the system? If so, you could have a
problem with one of those. Assuming that your boiler isn't a combi
(I'm not familiar with the model, so I don't know) you may have a
motorised valve for each heating and hot water zone. If it's an
S-Plan system, the timer/room stat will control the valve and the
valve will switch the boiler on when it's open. So if the valve
doesn't open, or if it does open but its auxiliary switches don't
work, you'll get no heating.
Could this be your problem?

I'll raise your 2 port valve with a faulty mid position valve:-)

I'm having exactly the same problem and I have come to the exact same
conclusion. It seems the valve itself has become sticky, and the
actuator motor cannot manage to shift it to the fully open position
after a whole night switched off. (It opens and shuts it OK during the
day, just as the OP's does.)

I haven't yet replaced it because it'll mean draining down the system
etc, and then there's the worry that the valve has been on 20 years and
may not come off very easily

But soon ...

--
Les