Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: Nickbat on 15 November 2009, 15:34:23

Title: Any combi boiler experts out there?
Post by: Nickbat on 15 November 2009, 15:34:23
I have a problem getting my boiler to kick in when the hot taps are turned on. To get the hot to flow in the kitchen, I have first to turn on the bathroom hot tap, then turn it off once the boiler fires up. However, sometimes, even after turning on the bathroom tap it can take a good minute or two before the boiler fires.

I changed the kitchen taps a couple of weeks ago and the problem, which I think existed before, has become much worse since.

On the boiler (a Vokera Maxin 24), there is a hot water temperature control (just a knob, with a thinner to thicker line denoting min to max) and that is truned to its maximum.

There, that's all the info I can think of.

Is this a situation which requires a service engineer?

Hope not, they cost a fortune!  :( :'(
Title: Re: Any combi boiler experts out there?
Post by: MickAP on 15 November 2009, 15:56:24
Does the heating side of things work ok, is it presurrised ok?
Went out to my sons house the other night and his had lost all pressure in the system preventing it from firing up, got it back up to pressure and let loads of air out from the system (heating) and all was ok again, it fired up.

Mick
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 15 November 2009, 16:24:28
Quote
Does the heating side of things work ok, is it presurrised ok?
Went out to my sons house the other night and his had lost all pressure in the system preventing it from firing up, got it back up to pressure and let loads of air out from the system (heating) and all was ok again, it fired up.

Mick

Yep, all pressurised and the heating works.
Title: Re: Any combi boiler experts out there?
Post by: cem_devecioglu on 15 November 2009, 16:48:06
problem seems similiar to mine I had before..

there is a valve/gasket similiar that must be changed..

cheap not something expensive in mine.. I think it will be same for yours..by the way I call someone and watch when he's changing ;D :y
Title: Re: Any combi boiler experts out there?
Post by: Debs. on 15 November 2009, 16:53:11
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)
Title: Re: Any combi boiler experts out there?
Post by: cem_devecioglu on 15 November 2009, 16:55:31
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)

long live Debs :y
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 15 November 2009, 17:28:35
Flow sensor......I would say
Title: Re: Any combi boiler experts out there?
Post by: PhilRich on 15 November 2009, 18:16:46
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 15 November 2009, 22:12:07
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.
Title: Re: Any combi boiler experts out there?
Post by: ENFIELD_MV6 on 15 November 2009, 23:23:35
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.

if the person who comes is CORGI registered avoid as it means that they have not took the gas safe exam which has superceeded corgi. Basically corgi no longer exists so if thats the only badge/crudentials they have ask them if they are gas safe registered  :y :y :y
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 15 November 2009, 23:25:45
Quote
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.

if the person who comes is CORGI registered avoid as it means that they have not took the gas safe exam which has superceeded corgi. Basically corgi no longer exists so if thats the only badge/crudentials they have ask them if they are gas safe registered  :y :y :y

Thanks for the tip!  :y
Title: Re: Any combi boiler experts out there?
Post by: ENFIELD_MV6 on 15 November 2009, 23:29:40
Quote
Quote
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.

if the person who comes is CORGI registered avoid as it means that they have not took the gas safe exam which has superceeded corgi. Basically corgi no longer exists so if thats the only badge/crudentials they have ask them if they are gas safe registered  :y :y :y

Thanks for the tip!  :y

No worries use to help a gas safe engineer do some plumbing work (fetching and carrying plus lifting the boiler onto its brackets lol) and learnt a fair bit as he only ever fitted combi boilers when replacing systems so did learn a fair bit along the way
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 16 November 2009, 08:30:11
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.

Not that any of them are engineers, fitters or technicians is the correct reference.

Also, the laws are quite clear as they dont state that you need any specific certification if doing a job for no reward, you simply need to prove compitence (for which thier are methods).

To add to it, the chances are that the flow sensor is external to the main gas part (combustion chamber and burner section) and hence is very accessable with pretty much 0 risk on the gas front (and hence means the job technicaly falls outside that covered by the gas regs anyway).

Even better, the manual for the lump will probably tell you where it is and the part number.

I dont buy the heat exchanger bit as this would not slow the boiler firing unless the flow rate was stupidly restricted.

I get bits here:

http://www.onlineboilerspares.com/
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 16 November 2009, 08:32:57
In fact, here is the diagram in question

http://www.onlineboilerspares.com/product1897.html
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 16 November 2009, 08:41:08
And here is the manual

http://vokera.excaliburstudio.co.uk/wp-content/uploads/2009/04/maxin_24e_28e_installation_and_servicing_-instructions.pdf

Note, the manaul confirms that you do not have to access the burner chamber.
Title: Re: Any combi boiler experts out there?
Post by: cem_devecioglu on 16 November 2009, 09:37:33
Quote
And here is the manual

http://vokera.excaliburstudio.co.uk/wp-content/uploads/2009/04/maxin_24e_28e_installation_and_servicing_-instructions.pdf

Note, the manaul confirms that you do not have to access the burner chamber.

good work..You deserve your name as usual :y
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 16 November 2009, 09:39:33
Lol, I HATE it when people are told you cant touch certain things when in reality you can (assuming you are compitent).

Title: Re: Any combi boiler experts out there?
Post by: Dishevelled Den on 16 November 2009, 10:25:58
A fascinating and informative thread  8-) 8-) :y :y
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 16 November 2009, 11:02:33
Quote
And here is the manual

http://vokera.excaliburstudio.co.uk/wp-content/uploads/2009/04/maxin_24e_28e_installation_and_servicing_-instructions.pdf

Note, the manaul confirms that you do not have to access the burner chamber.


Magic Mark!!!  :y :y :y

Part ordered from Boiler Spares.  :y :y
Title: Re: Any combi boiler experts out there?
Post by: Debs. on 16 November 2009, 11:17:57
Quote
Lol, I HATE it when people are told you cant touch certain things when in reality you can (assuming you are compitent).


I recently returned a 're-plastering favour' (by a Kentish friend) by installing his new Worcester-Bosch C/H condensing-boiler....being a competent plumber and sparky; but having no 'legal' certification: I contacted a local (Herne, Kent) 'Gas Registration Scheme' chap and outlined what I intended to do (RE: flues, wiring, water and gas piping sizes/route etc.) and he happily agreed to come `cap the gas supply before I removed the old boiler and then came back to make the final gas connection, commission and certify the boiler.....all for a reasonable £90. fee.
 
Common sense prevailed; the Gas/Building regs and manufacture`s warranty stipulations were adhered-to the letter and I was praised for a 'quaility' installation (".....and it`s nice to see someone whom can really use a pipe-bender")......a result! ;)
Title: Re: Any combi boiler experts out there?
Post by: unlucky mark mv6 on 16 November 2009, 18:53:52
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.
As long as you are not breaking any gas lines,you dont need to be gas safe. :y
Title: Re: Any combi boiler experts out there?
Post by: Marks DTM Calib on 16 November 2009, 18:57:18
Quote
Quote
Quote
Quote
My thoughts...
London hard water: heat exchanger choked or flow sensor/diaphragm is sticky or faulty. ;)


Spot on Debs, you clever girl! I'm a retired gas service engineer and those are the two most likely culprits :y

Thanks girls and guys!  ;)

I guess that's an engineer job, then. :(

Especially as I've heard it's illegal to fiddle with them if you're not Corgi registered.
As long as you are not breaking any gas lines,you dont need to be gas safe. :y

And even then you dont, as long as you are not charging and can prove compidence  :y
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 17 November 2009, 11:56:26
Thanks to everyone, especially Mark.  :y :y

Part arrived this morning, fitting was a piece of cake, and now I have hot water on demand!

Total cost: £11.38!

 :) :) :) :) :) :) :) :) :) :) :) :)
Title: Re: Any combi boiler experts out there?
Post by: davethediver on 17 November 2009, 12:00:03
So OOF saved you the call out fee another result :y
Title: Re: Any combi boiler experts out there?
Post by: Dishevelled Den on 17 November 2009, 12:00:24
Quote
Thanks to everyone, especially Mark.  :y :y

Part arrived this morning, fitting was a piece of cake, and now I have hot water on demand!

Total cost: £11.38!

 :) :) :) :) :) :) :) :) :) :) :) :)


Well played Nick 8-) 8-) :y
Title: Re: Any combi boiler experts out there?
Post by: Debs. on 17 November 2009, 12:01:33
Quote
Thanks to everyone, especially Mark.  :y :y

Part arrived this morning, fitting was a piece of cake, and now I have hot water on demand!

Total cost: £11.38!

 :) :) :) :) :) :) :) :) :) :) :) :)

Well done that man! :y
Title: Re: Any combi boiler experts out there?
Post by: Nickbat on 17 November 2009, 12:21:11
Quote
Quote
Thanks to everyone, especially Mark.  :y :y

Part arrived this morning, fitting was a piece of cake, and now I have hot water on demand!

Total cost: £11.38!

 :) :) :) :) :) :) :) :) :) :) :) :)

Well done that man! :y


Forgot a special thanks to you, Debs, for your spot-on diagnosis.  :y :y