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 

Potterton Promax 15 HE boiler problem


 
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
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Thu Jan 05, 2012 6:42 pm Reply with quote

Hi all,

I have a problem with my potterton promax 15 HE boiler.

I came home yesterday to find the heating was off, so I did what I normally do and hit the on/ off reset button on the front of the boiler but the boiler didnt start up, I repeated a couple of times but still nothing. I noticed the boiler was warm so I left it for half an hour to try again, still nothing. Last night I was in the kitchen and the boiler fired up on its own, ran for approximately 30 seconds and then switched itself off again. Having spent some time in the kitchen today I've timed the boiler starting up and switching off after 30 seconds at 10 minute intervals.

I would be very grateful if anyone cold shed some light on the problem.

I had the ignition PCB board replaced last month for another problem and everything had been working fine until now.

Cheers Jdogg80
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.
swbjackson

from United Kingdom

Joined: 12 Dec 2008
Posts: 1684
Location: Sussex,
United Kingdom
Thanked: 148 times

PostPosted: Thu Jan 05, 2012 8:12 pm Reply with quote

What were/are the lights on the front of the boiler doing?
Back to top
 Alert Moderators
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Thu Jan 05, 2012 8:22 pm Reply with quote

There are no lights on the front, just a metal outer casing with a reset switch
Back to top
 Alert Moderators
swbjackson

from United Kingdom

Joined: 12 Dec 2008
Posts: 1684
Location: Sussex,
United Kingdom
Thanked: 148 times

PostPosted: Thu Jan 05, 2012 8:28 pm Reply with quote

Sorry I was forgetting they're hidden on this model. To properly diagnose the fault an engineer needs to check the lights on the PCB which is behind the front casing.
Back to top
 Alert Moderators
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Thu Jan 05, 2012 8:57 pm Reply with quote

I had both the ignition PCB and the control PCB out of the housing unit and still can't see any lights
Back to top
 Alert Moderators
swbjackson

from United Kingdom

Joined: 12 Dec 2008
Posts: 1684
Location: Sussex,
United Kingdom
Thanked: 148 times

PostPosted: Thu Jan 05, 2012 10:11 pm Reply with quote

There should be 3 lights on the front of the plastic housing.
Back to top
 Alert Moderators
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Thu Jan 05, 2012 10:32 pm Reply with quote

There's no lights on the plastic housing just vents. I had it all opened up in the dark when the boiler kicked and there's nothing lighting up anywhere.
Back to top
 Alert Moderators
swbjackson

from United Kingdom

Joined: 12 Dec 2008
Posts: 1684
Location: Sussex,
United Kingdom
Thanked: 148 times

PostPosted: Fri Jan 06, 2012 6:27 am Reply with quote

On the promaxes I've fitted and the instsructions show 3 lights below the reset button. There is also the screw for setting the boiler stat to the right of the reset.
Back to top
 Alert Moderators
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Fri Jan 06, 2012 4:10 pm Reply with quote

I can assure you there are defo no lights on this model. The reset switch is on its own on a separate bracket.

With this info do you have any idea what might be wrong with my boiler?

Cheers
Back to top
 Alert Moderators
gazthepottertonengineer

from United Kingdom

Joined: 21 May 2005
Posts: 1268
Location: United Kingdom
Thanked: 117 times

PostPosted: Fri Jan 06, 2012 5:33 pm Reply with quote

He has an earlier version of the Promax ! Which does not have any lights and has 2 pcbs rather than the 1 Dc platform on the later ones!

Check to see that the pump is running!
Back to top
 Alert Moderators
jdogg80

from United Kingdom

Joined: 05 Jan 2012
Posts: 6
Location: Cheshire,
United Kingdom

PostPosted: Fri Jan 06, 2012 8:54 pm Reply with quote

Thanks for your advice.

for anyone looking in the future, my mate came round to have look, he checked the pump and it had power and was working. He took the front off the thermostat in the hall way and straight away the boiler started. He wasn't to sure what the problem was, dust, moisture or whether something had become displaced, but its still working so fingers crossed the thermostat doesn't need replacing .
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
Page 1 of 1

 
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 
potterton promax combination boiler heating problem 4 40 Mon Sep 23, 2013 2:56 pm
Potterton Promax HE24 Lockout problem 5 1060 Sun Feb 03, 2008 12:14 pm
CH startup problem on Potterton promax 15HE 2 560 Wed Jan 07, 2009 6:50 pm
Potterton Promax HE Plus Ignition Problem 2 40 Fri Oct 21, 2011 9:32 pm
Potterton Promax HE - Problem firing 2 560 Mon Nov 17, 2008 5:39 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.