The pilot light on my Ideal E Type boiler lights readily and all appears
well when the boiler fires up but after 1-2 hours of running it shuts down
and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the pump
losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to fix
( a pump change would be ok) would be appreciated.

In an earlier contribution to this discussion,
hdsc00919 wrote:

The pilot light on my Ideal E Type boiler lights readily and all
appears well when the boiler fires up but after 1-2 hours of running
it shuts down and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the
pump losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to
fix ( a pump change would be ok) would be appreciated.


Does your boiler have a permanent pilot light, or one which is lit by the
electronics each time the boiler fires up?

When it cuts out, how do you get it going again? Is there something which
has to be reset manually?

How is your system controlled? Are there any motorised valves - and if so,
how many and what type (2-port or 3-port)? Do any or all of the radiators
have TRVs? Is there a by-pass circuit?

Has it ever worked ok without doing this? If so, how long ago?
--
Cheers,
Roger
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monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

Thanks for relpying. My responses follow on from each of your questions.

Does your boiler have a permanent pilot light, or one which is lit by the
electronics each time the boiler fires up?

This is an older boiler lit with a match -pilot is permanent when working.

When it cuts out, how do you get it going again? Is there something which
has to be reset manually?

Manual reset, wait 3 mins, depess & light whilst holding down for 20 secs.

How is your system controlled? Are there any motorised valves - and if so,
how many and what type (2-port or 3-port)? Do any or all of the radiators
have TRVs? Is there a by-pass circuit?

No sign of motorised valves. Nearly all radiators have TVRs. Not sure on the
last point.

Has it ever worked ok without doing this? If so, how long ago?

Yes for a v.long time until 3 days ago.

In article ,
"hdsc00919" writes:
Thanks for relpying. My responses follow on from each of your questions.

Does your boiler have a permanent pilot light, or one which is lit by the
electronics each time the boiler fires up?

This is an older boiler lit with a match -pilot is permanent when working.

My guess would be that the pilot flame is not playing sufficiently on
the thermocouple, and eventually it decides the pilot has gone out
and cuts the supply off.

There could be a number of reasons. Some which spring to mind...
Dirt in pilot causing wrong size/shape flame.
Thermocouple worn out.
Flue blocked forcing flames to burn lower than normal. *
Oxygen depletion sensor triggering (if fitted) due to blocked
flue or inadequate fresh air supply. *
Gas supply pressure drops too much when main burner fires up.

* These conditions would be a serious risk to life if present.

--
Andrew Gabriel

In message , Andrew Gabriel
writes
In article ,
"hdsc00919" writes:
Thanks for relpying. My responses follow on from each of your questions.

Does your boiler have a permanent pilot light, or one which is lit by the
electronics each time the boiler fires up?

This is an older boiler lit with a match -pilot is permanent when working.

My guess would be that the pilot flame is not playing sufficiently on
the thermocouple, and eventually it decides the pilot has gone out
and cuts the supply off.

There could be a number of reasons. Some which spring to mind...
Dirt in pilot causing wrong size/shape flame.
Thermocouple worn out.
Flue blocked forcing flames to burn lower than normal. *
Oxygen depletion sensor triggering (if fitted)

Andrew, this is a boiler which was heavily advertised in "What Cave"
magazine

due to blocked
flue or inadequate fresh air supply. *
Gas supply pressure drops too much when main burner fires up.


The time scales are not right

--
geoff

In message , hdsc00919
writes
The pilot light on my Ideal E Type boiler lights readily and all appears
well when the boiler fires up but after 1-2 hours of running it shuts down
and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the pump
losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to fix
( a pump change would be ok) would be appreciated.

It could be a whole host of things

I would have thought that pump problems would tend to show themselves in
less than the timescale you reported

Does it always take about the same time to cut out, or is it a bit
random?

--
geoff

Over the short timescale it appears to vary btwn. 1-2 hours

"raden" wrote in message
...
In message , hdsc00919
writes
The pilot light on my Ideal E Type boiler lights readily and all appears
well when the boiler fires up but after 1-2 hours of running it shuts down
and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the pump
losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to fix
( a pump change would be ok) would be appreciated.

It could be a whole host of things

I would have thought that pump problems would tend to show themselves in
less than the timescale you reported

Does it always take about the same time to cut out, or is it a bit random?

--
geoff

On Mon, 15 May 2006 11:33:00 +0000, hdsc00919 wrote:

The pilot light on my Ideal E Type boiler lights readily and all appears
well when the boiler fires up but after 1-2 hours of running it shuts down
and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the pump
losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to fix
( a pump change would be ok) would be appreciated.

I strongly suspect that there is some sort of over heat cut out which is
in series with the thermocouple circuit.

It might or might not actually be over heating.



--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html
Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards

"hdsc00919" wrote in message
. uk...
The pilot light on my Ideal E Type boiler lights readily and all appears
well when the boiler fires up but after 1-2 hours of running it shuts down
and the pilot light is also out.

A search on google suggests the boiler may be overheating due to the pump
losing efficiency although it still appears to be running.

Any thoughts as to whether this is the most probable cause and how to fix
( a pump change would be ok) would be appreciated.

The e type is about as basic as they come. Many don't even have an overheat
stat in the thermocouple connection. If yours has then poor circulation
might be the cause or a failing boiler stat. If it hasn't then most likely
is a failing thermocouple/bad tehermocouple connection/poor pilot flame
needing a pilot burner/injector clean and flame adjustment.
Try the simple/cheap ones first