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 

Baxi 105e Boiler central heating not working, hot water fine


 
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
DrGonzo98

from United Kingdom

Joined: 02 Sep 2009
Posts: 4
Location: West Midlands,
United Kingdom

PostPosted: Wed Sep 02, 2009 3:15 pm Reply with quote

I'm new to this forum so please bear with me.

I've moved to a new property that has an existing Baxi Combi Instant 105e Boiler. The hot water works fine but when I've tried to fire up the central heating it doesn't work.

When I switch on the CH after 10 second the 'hot water tap symbol' flashes green, the ignition flashes yellow then goes solid. After about 12 seconds the 'hot water tap symbol' goes off and then about 30 seconds later the boiler stops. The radiators at no stage heat up.

I've looked in the fault finding manual and the according to this the 'radiator symbol' should come on green to begin with instead of the tap symbol.

Any suggestions of what the fault might be or anything I can try make it work / diagnose it further?
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.
EliteHeat

from United Kingdom

Joined: 28 Jan 2006
Posts: 1094
Location: London,
United Kingdom
Thanked: 2 times

PostPosted: Wed Sep 02, 2009 4:55 pm Reply with quote

How are you trying to start the heating?
Back to top
 Alert Moderators
Rob

from United Kingdom

Joined: 14 Aug 2006
Posts: 4229
Location: London,
United Kingdom
Thanked: 347 times

PostPosted: Wed Sep 02, 2009 5:47 pm Reply with quote

The flashing HW symbol is probably pre-heat. Meaning your probably not turning the heating on properly.

Is the timeswitch in the on position? Is the room stat turned up?
Back to top
 Alert Moderators
davebgas

from United Kingdom

Joined: 09 Feb 2009
Posts: 2043
Location: London,
United Kingdom
Thanked: 200 times

PostPosted: Wed Sep 02, 2009 6:09 pm Reply with quote

Flashing HW light is boiler in pre-heat.
Back to top
 Alert Moderators
gaspro1981

from United Kingdom

Joined: 07 Dec 2008
Posts: 1582
Location: Devon,
United Kingdom
Thanked: 253 times

PostPosted: Wed Sep 02, 2009 7:30 pm Reply with quote

so its a 105e instant icon_question.gif
Back to top
 Alert Moderators
davebgas

from United Kingdom

Joined: 09 Feb 2009
Posts: 2043
Location: London,
United Kingdom
Thanked: 200 times

PostPosted: Wed Sep 02, 2009 7:33 pm Reply with quote

Think the OP says it is in opening post mate
Back to top
The following user says thank you to davebgas for this useful post:
gaspro1981 (2 Sep 2009)
 Alert Moderators
gas4you

from United Kingdom

Joined: 23 Feb 2007
Posts: 17613
Location: Norfolk,
United Kingdom
Thanked: 748 times

PostPosted: Wed Sep 02, 2009 7:35 pm Reply with quote

Check all external heating controls are on. Check for 240VAC at the switched live terminal on the boiler.

Also check the hw/ch knob has not broken, so will not turn on to ch.
Back to top
 Alert Moderators
gaspro1981

from United Kingdom

Joined: 07 Dec 2008
Posts: 1582
Location: Devon,
United Kingdom
Thanked: 253 times

PostPosted: Wed Sep 02, 2009 7:37 pm Reply with quote

davebgas wrote:
Think the OP says it is in opening post mate

f**k me spot on icon_redface.gif
Back to top
 Alert Moderators
davebgas

from United Kingdom

Joined: 09 Feb 2009
Posts: 2043
Location: London,
United Kingdom
Thanked: 200 times

PostPosted: Wed Sep 02, 2009 7:40 pm Reply with quote

Quote:
Check for 240VAC at the switched live terminal on the boiler.

Fault finding starts here...... does the CH demand light come on?
Back to top
 Alert Moderators
baxpoti

from United Kingdom

Joined: 15 Dec 2006
Posts: 4488
Location: United Kingdom
Thanked: 555 times

PostPosted: Wed Sep 02, 2009 8:09 pm Reply with quote

On the boiler incoming terminal block, locate terminals 1 and 2. Isolate , label and disconnect any wiring on here and link the terminals 1 and 2.

Heating now works?
Back to top
 Alert Moderators
davebgas

from United Kingdom

Joined: 09 Feb 2009
Posts: 2043
Location: London,
United Kingdom
Thanked: 200 times

PostPosted: Wed Sep 02, 2009 8:25 pm Reply with quote

Baxpoti, you're probably the man to ask about a 105e if its ok to PM you?
Back to top
 Alert Moderators
Agile

from United Kingdom

Joined: 26 Jun 2004
Posts: 52973
Location: London,
United Kingdom
Thanked: 3342 times

PostPosted: Wed Sep 02, 2009 10:04 pm Reply with quote

If Baxpoti has anything useful to say then he should say it here or in the CC !
Back to top
 Alert Moderators
DrGonzo98

from United Kingdom

Joined: 02 Sep 2009
Posts: 4
Location: West Midlands,
United Kingdom

PostPosted: Fri Sep 04, 2009 2:19 pm Reply with quote

Elite Heat / Rob 884

I'm starting the heating by moving the switch on the the timer to the 'on continuous position as opposed to timer or off (if that makes any sense).

There is an external control a thermostat on the landing. Some (not all) of the rads also have thermostat valves on them too
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 
Baxi 105e problem - CH fine, but not hot water 5 480 Fri Apr 18, 2008 6:49 pm
Baxi 105e HW works fine but CH dosn't??? HELP!!! 8 860 Thu Jan 04, 2007 11:53 am
baxi combi 105e ch fine no dhw 5 420 Mon Feb 09, 2009 1:45 pm
No hot water,central heating working fine? 5 160 Wed Jun 12, 2013 8:32 am
Central Heating System Not Working - Hot Water Fine 5 1240 Thu Dec 07, 2006 1:49 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.