DIYnot
Local | Network
   DIYnot > Forums
Local | Network
DIYnot Network Local DIYnot Network Local  
  Forum IndexForum Index     RulesRules    HelpHelp     Join FREERegister Free     About CookiesCookies     SearchSearch     LoginLogin 

Please help! Worcester Bosch 240 problems BG unable to solve

Goto page 1, 2  Next
 
Post new topic   Reply to topic    DIYnot.com Forum Index > Plumbing and Central Heating
Search this topic :: View previous topic :: View next topic  
Author Message
shonky

from United Kingdom

Joined: 03 Jul 2011
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Sun Jul 03, 2011 11:01 am Reply with quote

Hi.
Im a new member with a problem (my expertise is AV so ill help out as much as I can there!)

Ive had a Worcester Bosch 240 boiler for nearly 15 years and had it serviced by BG yearly.

Earlier this year it developed a problem whereas the overheat switch would pop as I filled the bath (usually around 1/3rd full) It would be fine with the central heating or running the shower or sink etc.....The water would alwazs get hot.

BG were called out to solve the problem and swapped the thermostat cut of sensor plus a couple of other small items.

After they left the problem was still present so an engineer returned and fitted a new circuit board and adjusted a few settings.....He also added an earthing cable (which incidentally he did not sleeve....naughty!)

Anyway the problem was still present but I managed to find a way of filling the bath without the overheat tripping ( I would run the bath for a minute or so, stop it for a minute and then repeat..eventually I would get my bath!)

However now whenever you try and run the hot water it takes an age for the boiler to fire...I mean like 5 minutes.

You can hear the piezo clicking away but it doesnt fire, after a while it fires and runs hot for a few minutes then goes out.....If left running it tries to ignite and after another few minutes it fires again but soon goes out etc.

A total nightmare if you are trying to have a shower!

BG have told me the system needs flushing which will cost over 500 but the engineer didnt seem at all convinced that would cure the problem!

Any ideas as to what it might be?

Thanks in anticipation.
Back to top
 Alert Moderators

If you do not want to see this advert, click here to login or if you are new click here to join free.
DP

from United Kingdom

Joined: 10 Dec 2003
Posts: 6584
Location: Glasgow,
United Kingdom
Thanked: 760 times

PostPosted: Sun Jul 03, 2011 11:42 am Reply with quote

Quote:
Ive had a Worcester Bosch 240 boiler for nearly 15 years and had it serviced by BG yearly.


Serviced? in 10 minutes? I do not think so.

Kick up a stink or get an engineer who can locate and fix the fault instead of taling stabs in the dark
Back to top
 Alert Moderators
nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6391
Location: United Kingdom
Thanked: 238 times

PostPosted: Sun Jul 03, 2011 12:24 pm Reply with quote

how on earth does a flush cure an ignition problem? keep calling them out 'til its fixed.
Back to top
 Alert Moderators
shonky

from United Kingdom

Joined: 03 Jul 2011
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Sun Jul 03, 2011 12:52 pm Reply with quote

nickso wrote:
how on earth does a flush cure an ignition problem? keep calling them out 'til its fixed.


I know that!.....thats why I declined, they reckon that the heat exchanger gets silted up and that causes the overheat trip to go!

Ive called them out again for tuesday but im hoping to understand (a little more than they seem to) what the problem might be.
Back to top
 Alert Moderators
nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6391
Location: United Kingdom
Thanked: 238 times

PostPosted: Sun Jul 03, 2011 12:59 pm Reply with quote

shonky wrote:
nickso wrote:
how on earth does a flush cure an ignition problem? keep calling them out 'til its fixed.


I know that!.....thats why I declined, they reckon that the heat exchanger gets silted up and that causes the overheat trip to go!

Ive called them out again for tuesday but im hoping to understand (a little more than they seem to) what the problem might be.


sorry, i missed the bit that said the original fault was still present.

well he is right the DHW heat exchanger can get clogged on these but a flush won't cure it, only stop it happening again. the DHW heat exchanger probably needs replacing, maybe even the primary if the water is bad enough. the O/H stat can also trip if the brass tee piece above the pump is blocked, only seen that on really badly clogged systems though.
Back to top
 Alert Moderators
Jordon

from United Kingdom

Joined: 18 Sep 2008
Posts: 614
Location: Bournemouth,
United Kingdom
Thanked: 95 times

PostPosted: Sun Jul 03, 2011 6:21 pm Reply with quote

Sounds like it could be the pump,plate hex or main hex. Need them to test
it properly.
Back to top
 Alert Moderators
adlplumbing

from United Kingdom

Joined: 09 Dec 2009
Posts: 4475
Location: Lancashire,
United Kingdom
Thanked: 312 times

PostPosted: Sun Jul 03, 2011 7:00 pm Reply with quote

ask them for temp reading on flow and return to heat ex when hot water running
if heat exchanger is scaled then it temp will rise till over heat kicks in
if does not then theirs is another problem
Back to top
 Alert Moderators
DP

from United Kingdom

Joined: 10 Dec 2003
Posts: 6584
Location: Glasgow,
United Kingdom
Thanked: 760 times

PostPosted: Sun Jul 03, 2011 8:04 pm Reply with quote

Surely a repair person should not have to be told what to do. When he or she attends a malfunction, what is suggested should automatically have been done to correct the malfunction.
Back to top
 Alert Moderators
shonky

from United Kingdom

Joined: 03 Jul 2011
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Sun Jul 03, 2011 8:53 pm Reply with quote

DP wrote:
Surely a repair person should not have to be told what to do. When he or she attends a malfunction, what is suggested should automatically have been done to correct the malfunction.


In an ideal world. yes!

The problem is that it seems like the BG engineers are just stabbing in the dark!

Im asking here because I want to understand what might be the problem as they spend their hour here and tell me its fixed each time.

I have an engineer coming tomorrow between 4 and 6 so keep your fingers crossed
Back to top
 Alert Moderators
nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6391
Location: United Kingdom
Thanked: 238 times

PostPosted: Sun Jul 03, 2011 9:07 pm Reply with quote

oh dear, 4-6 is the worst time slot in summer. icon_lol.gif
Back to top
 Alert Moderators
Agile

from United Kingdom

Joined: 26 Jun 2004
Posts: 53497
Location: London,
United Kingdom
Thanked: 3405 times

PostPosted: Sun Jul 03, 2011 10:35 pm Reply with quote

4-6 is hot, they are tired and looking forward to going home.

Probably as soon as they can get out of your house!
Back to top
 Alert Moderators
breadnbutter

from United Kingdom

Joined: 25 Feb 2011
Posts: 978
Location: Bedfordshire,
United Kingdom
Thanked: 80 times

PostPosted: Mon Jul 04, 2011 8:06 am Reply with quote

ipossible hw plate or hw thermister fualt.
Back to top
 Alert Moderators
nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6391
Location: United Kingdom
Thanked: 238 times

PostPosted: Mon Jul 04, 2011 10:21 am Reply with quote

Agile wrote:
4-6 is hot, they are tired and looking forward to going home.

Probably as soon as they can get out of your house!


nope, it's the worst slot 'cos 90% of engineers will be knocked off by 4pm at the moment. that gives you the choice of backshift guys or the weirdo's that do overtime......that in turn means you have higher chance of being bumped after 4pm if the workload is high.
Back to top
 Alert Moderators
Agile

from United Kingdom

Joined: 26 Jun 2004
Posts: 53497
Location: London,
United Kingdom
Thanked: 3405 times

PostPosted: Mon Jul 04, 2011 10:36 am Reply with quote

I would have thought that there is little overtime being agreed at this quiet time of year.

A dentist onece told me that he does his best work about 1130 am after he has just had a cup of coffee!

So I always try to see them at that time!
Back to top
 Alert Moderators
nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6391
Location: United Kingdom
Thanked: 238 times

PostPosted: Mon Jul 04, 2011 10:39 am Reply with quote

depends on the workload, all you have to do is phone dispatch and ask if they have any work left, if they do your on overtime.

most days they run out of work at 3pm round here.
Back to top
 Alert Moderators
Search this topic :: View previous topic :: View next topic  
Post new topic   Reply to topic    DIYnot.com Forum Index > Plumbing and Central Heating All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Similar Topics   Replies   Views   Posted 
gas pressure problems to my flat ??? need to solve this! 16 880 Mon Jul 31, 2006 8:55 pm
Can you solve my Vaillant combi boiler problem, Sherlock? 84 9520 Sun Jun 10, 2007 10:53 am
draining rads to try and solve prob, but tank still full 16 900 Mon Oct 22, 2007 7:31 pm
steam coming from tanks in loft-any ideas how to solve it? 17 740 Fri Dec 12, 2008 5:05 pm
Would this solve the problem????? 6 460 Mon Feb 06, 2006 11:59 pm


 
DIYnot
Find an Expert | Find a Supplier | Search DIYnot.com
Network | Advertising | Newsletter
DIY | DIY How To | @home | DIY Wiki | DIY Forum
By using this site you agree to our Terms of Service / Disclaimer.
Please read our Privacy Policy. Copyright © 2000-2014 DIYnot Limited.