My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and
has been fine until a few weeks ago.
We leave the heating on constant and use the thermostat to control it.
When we turn the thermostat down last thing at night, the pump keeps
running for a very long time, even when there is no heat left in the
radiators. There is also a lot of clicking coming from the boiler. I have
resorted to turning off the mains to get it to stop.
This problem is just with the heating and not the hot water, which only
comes on for a brief period in the day, and the pump always shuts down
normally after the hot water has been on.
Has anyone else had this problem and what did you find helpful?

--

On Mon, 03 Mar 2014 21:44:01 +0000, Mike
wrote:

My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and
has been fine until a few weeks ago.
We leave the heating on constant and use the thermostat to control it.
When we turn the thermostat down last thing at night, the pump keeps
running for a very long time, even when there is no heat left in the
radiators. There is also a lot of clicking coming from the boiler. I have
resorted to turning off the mains to get it to stop.
This problem is just with the heating and not the hot water, which only
comes on for a brief period in the day, and the pump always shuts down
normally after the hot water has been on.
Has anyone else had this problem and what did you find helpful?

I haven't had this problem but W-B have a good repair service. I
would recommend calling them out. And I don't recommend switching off
at the mains. The fans on some W-B boilers are prone to failure and
need running regularly.
--
(\__/) M.
(='.'=) If a man stands in a forest and no woman is around
(")_(") is he still wrong?

Mike wrote:
My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and
has been fine until a few weeks ago. We leave the heating on constant
and use the thermostat to control it.
When we turn the thermostat down last thing at night, the pump keeps
running for a very long time, even when there is no heat left in the
radiators. There is also a lot of clicking coming from the boiler. I have
resorted to turning off the mains to get it to stop.
This problem is just with the heating and not the hot water, which only
comes on for a brief period in the day, and the pump always shuts down
normally after the hot water has been on.
Has anyone else had this problem and what did you find helpful?

Is the clicking noise you hear that associated with cooling down or more
like a relay on the control board opening and closing?

On Mon, 03 Mar 2014 21:44:01 +0000, Mike wrote:

Has anyone else had this problem and what did you find helpful?

Similar sort of problem with the same boiler, yes. Turned out to be the
cheap and nasty Chinese relays they use. Try exposing the control pcb and
gently tapping it whilst listening for the characteristic relay 'click'
followed by the pump cutting out. Then you'll know for sure it's a relay.
However, sometimes there's no 'click' but the same thing happens anyway.
In both cases, it's a relay. Even when the relays are energised and the
contacts appear closed, they can still be open circuit as they often
don't close with sufficient pressure to pass current.
If Worcester-Bosch had used decent relays, it wouldn't have added hardly
anything to the final price, so it's a shame. A service bod won't bother
trying to trace a faulty relay, however, he'll just swap out the whole
board (90 quid odd) and charge you for that plus the labour etc. If
you're handy with a soldering iron, you can save a worthwhile sum just
replacing the duff relay(s).

replying to Cursitor Doom , Mike wrote:
cd wrote:

Similar sort of problem with the same boiler, yes. Turned out to be the
cheap and nasty Chinese relays they use. Try exposing the control pcb and
gently tapping it whilst listening for the characteristic relay 'click'
followed by the pump cutting out. Then you'll know for sure it's a relay.
However, sometimes there's no 'click' but the same thing happens anyway.
In both cases, it's a relay. Even when the relays are energised and the
contacts appear closed, they can still be open circuit as they often
don't close with sufficient pressure to pass current.
If Worcester-Bosch had used decent relays, it wouldn't have added hardly
anything to the final price, so it's a shame. A service bod won't bother
trying to trace a faulty relay, however, he'll just swap out the whole
board (90 quid odd) and charge you for that plus the labour etc. If
you're handy with a soldering iron, you can save a worthwhile sum just
replacing the duff relay(s).


Many thanks for this advice. I am not up to much with a soldering iron and
think I will probably discuss it with the CH engineer who installed it to
start with.

--

replying to Bob Minchin , Mike wrote:
bob.minchinREMOVE wrote:

Is the clicking noise you hear that associated with cooling down or more
like a relay on the control board opening and closing?


No it is definitely not a cooling noise and it sounds louder and more like
a technical problem inside the boiler. Not sure what could be causing it.

--

replying to Mark , Mike wrote:
i wrote:

On Mon, 03 Mar 2014 21:44:01 +0000, Mike
I haven't had this problem but W-B have a good repair service. I
would recommend calling them out. And I don't recommend switching off
at the mains. The fans on some W-B boilers are prone to failure and
need running regularly.
--
(__/) M.
(='.'=) If a man stands in a forest and no woman is around
(")_(") is he still wrong?


Thanks Mark, I will probably end up taking that advice.

--

Proper hate boiler problems as you never know how much it'll cost to be put right! Mind you don't trust BG though as I read that they like to turn a modest fault into a new boiler sale for their commission!

Instead, try asking a local heating engineer for help/advice. It may be something that they can fix quite easily and quickly - if you're stuck with who to ask, try STL Heating because they were very helpful to me and they didn't mess me about either.

On Fri, 13 Feb 2015 04:43:13 -0800 (PST),
wrote:

lying newsgroup spam for STL

Mike wrote:
My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and
has been fine until a few weeks ago. We leave the heating on constant
and use the thermostat to control it.
When we turn the thermostat down last thing at night, the pump keeps
running for a very long time, even when there is no heat left in the
radiators. There is also a lot of clicking coming from the boiler. I have
resorted to turning off the mains to get it to stop.
This problem is just with the heating and not the hot water, which only
comes on for a brief period in the day, and the pump always shuts down
normally after the hot water has been on.
Has anyone else had this problem and what did you find helpful?

Have you got TRVs on all rads? and if so is there a bypass valve and is
it working OK.

Basically the pump is running on unable to lose the excess heat possibly
because the bypass valve is not opening?

Bob Minchin wrote:
Mike wrote:
My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008 and
has been fine until a few weeks ago. We leave the heating on constant
and use the thermostat to control it.
When we turn the thermostat down last thing at night, the pump keeps
running for a very long time, even when there is no heat left in the
radiators. There is also a lot of clicking coming from the boiler. I have
resorted to turning off the mains to get it to stop.
This problem is just with the heating and not the hot water, which only
comes on for a brief period in the day, and the pump always shuts down
normally after the hot water has been on.
Has anyone else had this problem and what did you find helpful?

Have you got TRVs on all rads? and if so is there a bypass valve and is
it working OK.

Basically the pump is running on unable to lose the excess heat possibly
because the bypass valve is not opening?
Bugger - did not spot this was a vintage thread and even one I'd replied
to before! DOH

On Monday, March 3, 2014 at 9:44:01 PM UTC, Mike wrote:
My Bosch Worcester Greenstar 24 Ri Boiler was installed in about 2008. There is also a lot of clicking coming from the boiler.

The whole electrical wiring circuit associated with the boiler and the boiler itself needs to be checked. Sometimes soon after the clicking noise starts the boiler stops working.For your safety and the safety of others around you if you are not qualified never remove the boiler cover and tap on the relays as stated in previous posting. Taping on the printed circuit board relay might cause damage to the board electronic components or circuits.

Thousands of Worcester Bosch boilers repaired and serviced.
Electronic engineer and Electrical Engineer
Gas Safe registered engineer before working for Worcester Bosch, whilst working for Worcester Bosch as a boiler breakdown engineer and currently a gas Safe registered engineer.
Mohun 07737845657
www.worcesterboilerrepairs.com

On 17/04/2016 10:39, wrote:
On Monday, March 3, 2014 at 9:44:01 PM UTC, Mike wrote:

My Bosch Worcester Greenstar 24 Ri Boiler was installed in about
2008. There is also a lot of clicking coming from the boiler.

The whole electrical wiring circuit associated with the boiler and
the boiler itself needs to be checked. Sometimes soon after the
clicking noise starts the boiler stops working.

I suppose he has probably fixed it in the two years since posting, but
just in case, what practical tests would you suggest?

(keep in mind this is a skilled and knowledgeable DIY group - posts that
simply suggest "get a man" tend to get laughed at here).

lst working for
Worcester Bosch as a boiler breakdown engineer and currently a gas
Safe registered engineer. Mohun

If you have got useful things to contribute, let's have them.

Otherwise read:

http://www.diyfaq.org.uk/about.html#can


--
Cheers,

John.

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| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

replying to John Rumm, Tony wrote:
have this problem, last night with water/heating off boiler was still
starting/clicking. luckily engineer visited this am and was able to hear
noise. He spoke with Worcestor boilers support and they say its likely to be
voltage leakage triggering the boiler/fan and have suggested fitting a
capacitor to solve problem...and if that doesnt work then new board. Will post
update when i know its fixed

--
posted from
http://www.homeownershub.com/uk-diy/...er-959948-.htm

On 26/05/2016 14:44, Tony wrote:
replying to John Rumm, Tony wrote:
have this problem, last night with water/heating off boiler was still
starting/clicking. luckily engineer visited this am and was able to hear
noise. He spoke with Worcestor boilers support and they say its likely
to be
voltage leakage triggering the boiler/fan and have suggested fitting a
capacitor to solve problem...and if that doesnt work then new board.
Will post
update when i know its fixed

If it does turn out to be a PCB, then talk to Geoff at
http://www.cetltd.com/

Chances are he will have a remanufactured board to swap at a fraction of
the WB price.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Thu, 26 May 2016 17:55:25 +0100, John Rumm wrote:

On 26/05/2016 14:44, Tony wrote:
replying to John Rumm, Tony wrote:
have this problem, last night with water/heating off boiler was still
starting/clicking. luckily engineer visited this am and was able to
hear noise. He spoke with Worcestor boilers support and they say its
likely to be voltage leakage triggering the boiler/fan and have
suggested fitting a capacitor to solve problem...and if that doesnt
work then new board. Will post update when i know its fixed

If it does turn out to be a PCB, then talk to Geoff at
http://www.cetltd.com/

Chances are he will have a remanufactured board to swap at a fraction of
the WB price.

With ours (same model) it turned out to be a burned/melted wiring harness
subsequent to a seal failure.

I got a fixed price repair and they rebuilt most of the boiler.



--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

"Bob Eager" wrote in message
...
On Thu, 26 May 2016 17:55:25 +0100, John Rumm wrote:

On 26/05/2016 14:44, Tony wrote:
replying to John Rumm, Tony wrote:
have this problem, last night with water/heating off boiler was still
starting/clicking. luckily engineer visited this am and was able to
hear noise. He spoke with Worcestor boilers support and they say its
likely to be voltage leakage triggering the boiler/fan and have
suggested fitting a capacitor to solve problem...and if that doesnt
work then new board. Will post update when i know its fixed

If it does turn out to be a PCB, then talk to Geoff at
http://www.cetltd.com/

Chances are he will have a remanufactured board to swap at a fraction of
the WB price.

With ours (same model) it turned out to be a burned/melted wiring harness
subsequent to a seal failure.

I got a fixed price repair and they rebuilt most of the boiler.
OOI what price, Bob?

On 29/11/2017 18:44, Grannysmith wrote:
replying to Mike, Grannysmith wrote:
I too have a Worcester Greenstar Ri it is 8yrs old , it is making the same
clicking noise my man was going to have a word with the Worcester dealer
but
as yet no comeback. It is making the noise all the time now but only
when the
heating is on not the water


Read the bloody date of the original post !! (Three years ago), and
please use a proper newsgroup reader, not that pathetic forum.