DIY Doctor

Main navigation

hot water no heating vokera linea 24

Postby leon » Sun May 18, 2008 6:08 pm

am working on the linea 24, boiler fires up fine on hot water on heating mode the boiler fires up then reaches temperature in about 30 seconds. Have checked pump which is ok also checked for a blokage on the return isolation valve as seemed like a circulation problem flushed water through the return pipe work. Problem stll occuring followed fault finding flow charts in manual. When i remove the power head off the three way valve the boiler fires up and the temperature display falls. i have tryed replacing the power head and the pcb, have checked modulator coil and there is no voltage across the terminals am thinkng that the gas valve may need replacing, any ideas
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sun May 18, 2008 5:49 pm


Simply Build It

Postby htg engineer » Mon May 19, 2008 7:27 pm

Have you checked gas pressures ?
Sensor or thermistor faulty ? cutting boiler off too soon ?
Check flow through heat-ex, very hot ? possible blockage in heat-ex ?

So from cold, you put the boiler on the radiators don't heat or very little ??
does the flow pipe from boiler get hot ?

Diverter choked ? or faulty, you've changed the head what about the valve itself ?

htg engineer
Rank: Project Manager
Posts: 3256
Joined: Tue May 22, 2007 5:22 pm

Postby moger4 » Mon Mar 05, 2012 5:03 pm

i had this problem , the divertor valve itself is stuck , i got a service kit and fitted it and it run fine the rod gets caked in scale and sticks , you have to clean up (greese the rod with silicone greese) and replace all the kit parts and it runs perfectly after that
Rank: Apprentice
Progress to next rank:
Posts: 19
Joined: Fri Nov 13, 2009 6:55 am

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics