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Pulsacoil a class burning smell

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Post  Neilo20 Wed Jan 02, 2013 12:36 pm

Hi I have had an A-Class running fine for about 5 years. Three days ago I noticed a very strong plasticky/pcb burning smell but it is still functioning as it should.
I did some googling and found out about keeping the topic/overflow tank full. After checking the water level was very low; so I topped it up to the line.
I now started using the unit again but the smell is still very strong during use.
Any advice and help would be very appreciated, thank you.

Neilo20

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Post  mike Wed Jan 02, 2013 1:56 pm

You need to check or get checked.
The wiring to the unit,
The heaters
And the relays and main ACB.
Mike
MGC/H2O
Norfolk

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Post  Neilo20 Thu Jan 03, 2013 11:39 am

Thank you mike for your quick reply.

I have checked the listed areas and seen that the relays appear burnt at the wiring terminals.
The pcb looks ok and I could not see anything amiss on the heaters or wiring.

Please see attached pictures one shows the burns and the other my service display.

I think I best get an engineer maybe?

Also it does seem to be functioning apart from smell. Is this safe for now until I can get it sorted

Pulsacoil a class burning smell Image13
Pulsacoil a class burning smell Image14

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Post  mike Thu Jan 03, 2013 11:43 am

Not really.
I would advise getting this attended to ASAP.
Only use if really necessary.
The burning has warned you of the problem.
And it is possible that it could develop much further and cause much more work.
It would be best to switch the unit off.
Mike
MGC/H2O
Norfolk

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Post  mike Thu Jan 03, 2013 11:46 am

Oh and well done posting such good pictures.
It is a great help to everyone.
Mike

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Post  Neilo20 Fri Jan 04, 2013 4:28 am

Thank you for your help,
Could you recommend the best place to get replacemt parts for it?

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Post  mike Fri Jan 04, 2013 9:31 am

http://shop.segel.co.uk/index.php?main_page=index&cPath=19&zenid=087jsbvera6jrslsi6us43iga7
Or
http://www.keeptheheaton.com/acatalog/Gledhill_Spares.html
Mike
MGC/H2O
Norfolk

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Post  Neilo20 Fri Jan 04, 2013 11:46 am

Thanks again for your help, that's great.

It seems pretty straight forward to swap out the relays but I just thought to my self. How so I stand legally ? Am I aloud to work on my boiler myself?

I was also thinking about the root cause of the problem? Do the relays just burn out, would another fault cause it?

You have been fantastic help thanks again.

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Post  mike Fri Jan 04, 2013 12:04 pm

You need to check the fault codes.
Ref the sensors.
And all wiring leading to and from the relays to their destination.
But the relay do not last forever.
More so if the connections were / are not tightened properly.
It is up to you whether you work on your own unit.
It may be worth checking out whom is available in your area.
On the home on here there is a list of advertisers.
Or try Google for Pulsacoil repairs in Norwich or Norfolk or where ever you are located.
Mike
MGC/H2O
Norfolk


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Post  Neilo20 Fri Jan 04, 2013 12:07 pm

Thanks that is really helpful advice- so there are no legal issue working on your own boiler if I did it?

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Post  mike Fri Jan 04, 2013 12:39 pm

I think you need to consult your solicitor.
This is a forum to help people.
And as you can see / read it has helped many.
Whether you are competent only you know that.
Mike

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Post  Neilo20 Fri Jan 04, 2013 1:03 pm

Sorry if I put you in an awkward position. I fully understand you would not want to be held responsible for any action taken upon the advice on this site.

I merely wanted to check if only qualified personnel were aloud to work on boilers.

Thank you again for all your help,

All the best :-)

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Post  southern nrg Mon Jan 21, 2013 1:01 pm

You will need to fit new upgraded relays to this, the burning is very common, gledhill sent a letter out to all registered properties with these boilers fitted a few years ago regarding this matter, i replace loads of these. The blackening of the cables to the 2 relays is a sign they are on their way out, nine times out of ten they simply just melt the wires. the relays get stuck on and you may come home to find the boiler steaming, hence a lot of vapour in the cupboard. best to get it sorted asap.

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