Tends to stick on leaving boiler and pump both running even though timer
and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.
--
bert

On Thu, 13 Mar 2014 16:44:33 +0000
bert ] wrote:

Tends to stick on leaving boiler and pump both running even though
timer and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

All mine needed was the removal of the actuator, working back and forth
of the stem with a pair of pliers, and careful reassembly.
Your experience may differ, but it's worth a try.
Good luck.

--
Davey.

On 13/03/2014 16:44, bert wrote:
Tends to stick on leaving boiler and pump both running even though timer
and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

Is the valve itself stuck open[1] or is it just that the auxiliary
contacts are stuck closed.

If the former, remove the actuator[2] and rotate the spindle of the
'wet' part of the valve back and forth to free it. If that doesn't work,
it's new valve time.

If the latter, you can replace the micro-switch, but it's a bit fiddly.
Otherwise, replace the actuator.

[1] If the valve is stuck open, the manual lever will move freely with
no resistance. If the gears whirr when you move the lever, the valve
isn't stuck

[2] Assuming it's not a very old one which gives you a flood when you do
that
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

In message , Roger Mills
writes
On 13/03/2014 16:44, bert wrote:
Tends to stick on leaving boiler and pump both running even though timer
and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

Is the valve itself stuck open[1] or is it just that the auxiliary
contacts are stuck closed.

If the former, remove the actuator[2] and rotate the spindle of the
'wet' part of the valve back and forth to free it. If that doesn't
work, it's new valve time.

If the latter, you can replace the micro-switch, but it's a bit fiddly.
Otherwise, replace the actuator.

[1] If the valve is stuck open, the manual lever will move freely with
no resistance. If the gears whirr when you move the lever, the valve
isn't stuck

It moves freely
[2] Assuming it's not a very old one which gives you a flood when you
do that
It's about 5 -6 years old.

Thanks
--
bert

In message , Davey
writes
On Thu, 13 Mar 2014 16:44:33 +0000
bert ] wrote:

Tends to stick on leaving boiler and pump both running even though
timer and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

All mine needed was the removal of the actuator, working back and forth
of the stem with a pair of pliers, and careful reassembly.
Your experience may differ, but it's worth a try.
Good luck.

--
Davey.

Thanks for your help Will give it a go.
--
bert

On 13/03/2014 18:45, bert wrote:
In message , Roger Mills
writes
On 13/03/2014 16:44, bert wrote:
Tends to stick on leaving boiler and pump both running even though timer
and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

Is the valve itself stuck open[1] or is it just that the auxiliary
contacts are stuck closed.

If the former, remove the actuator[2] and rotate the spindle of the
'wet' part of the valve back and forth to free it. If that doesn't
work, it's new valve time.

If the latter, you can replace the micro-switch, but it's a bit
fiddly. Otherwise, replace the actuator.

[1] If the valve is stuck open, the manual lever will move freely with
no resistance. If the gears whirr when you move the lever, the valve
isn't stuck

It moves freely

Sounds like the valve itself is stuck, then.

[2] Assuming it's not a very old one which gives you a flood when you
do that
It's about 5 -6 years old.


In that case, you'll be able to remove the actuator ok. Valves a *lot*
older than that couldn't be taken apart without breaking the water seal.

If you *do* need a new body, there are some on Ebay for £15 with free
delivery.
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

In message , Roger Mills
writes
On 13/03/2014 18:45, bert wrote:
In message , Roger Mills
writes
On 13/03/2014 16:44, bert wrote:
Tends to stick on leaving boiler and pump both running even though timer
and thermostat are both off. Honeywell 272848 Is it likely t be
recoverable or is it a replacement job?
Tends to work if I thump it.

Is the valve itself stuck open[1] or is it just that the auxiliary
contacts are stuck closed.

If the former, remove the actuator[2] and rotate the spindle of the
'wet' part of the valve back and forth to free it. If that doesn't
work, it's new valve time.

If the latter, you can replace the micro-switch, but it's a bit
fiddly. Otherwise, replace the actuator.

[1] If the valve is stuck open, the manual lever will move freely with
no resistance. If the gears whirr when you move the lever, the valve
isn't stuck

It moves freely

Sounds like the valve itself is stuck, then.

[2] Assuming it's not a very old one which gives you a flood when you
do that
It's about 5 -6 years old.


In that case, you'll be able to remove the actuator ok. Valves a *lot*
older than that couldn't be taken apart without breaking the water seal.

If you *do* need a new body, there are some on Ebay for £15 with free
delivery.
I've taken off the actuator. How much should the shaft rotate? About 1/4
turn in my case. Doesn't seem much.
--
bert

On 14/03/2014 11:00, bert wrote:

I've taken off the actuator. How much should the shaft rotate? About 1/4
turn in my case. Doesn't seem much.

That's all it needs between closed and open. Bit like a butterfly valve
in a carburettor.

Was it stiff, and is it now freer as a result of working it? A few drops
of WD40 round the shaft may be an idea.
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

In message , Roger Mills
writes
On 14/03/2014 11:00, bert wrote:

I've taken off the actuator. How much should the shaft rotate? About 1/4
turn in my case. Doesn't seem much.

That's all it needs between closed and open. Bit like a butterfly valve
in a carburettor.

Was it stiff, and is it now freer as a result of working it? A few
drops of WD40 round the shaft may be an idea.
It was a bit stiff and now free but when I put it back together the
actuator then gave up the ghost. Maybe I hit it in the wrong place.
New one fitted and now up and running.
--
bert