Heating doesnt work, Can you help?

Colbaker · 8 Mar 2010 at 22:01

Hi all,

My heating stopped working today and i have no idea why, i was hopeing someone here might know what the issue is?

I have a combi boiler and for some reason it has stopped heating and pumping the water around the rads, It works fine with the hot water though? yesterday it happened but i just turned it off and back on again and all was fine, this did not work today.

Any idea's

Felix Da Housecat · 8 Mar 2010 at 22:04

Check the timing. If nothing has changed then call an engineer out.

Al-Ectrician · 8 Mar 2010 at 22:06

sounds like divertor is failing.

what pressure on your gauge ?

Colbaker · 8 Mar 2010 at 22:13

normal pressure readings sitting in the middle of the green.

Gaz1988 · 8 Mar 2010 at 22:16

must be broken!

Greebo · 8 Mar 2010 at 22:20

Suspect water heating pump.

St0rmer66 · 8 Mar 2010 at 22:51

Greebo said:
Suspect water heating pump.

But then the hot water wouldn't work. It uses the same pump for both on a combi.

As for the OP: it depends entirely on which boiler you have, it could be a number of things. Unless you've set the timer wrong then it's unlikely to be anything you can fix yourself.

Angilion · 9 Mar 2010 at 01:52

On the plus side, the fact that the boiler works for hot water implies that nothing very major is wrong. The repair will probably not be hideously expensive.

cambb · 9 Mar 2010 at 06:36

Sounds like diverter valve.

FlyingFish · 9 Mar 2010 at 07:14

It really does depend on what make and model of boiler you have. Some have diverter valves, others dont. Some have two pumps, but most have one.. For someone qualified it should be pretty straight forward to fix your boiler..

Mick

PS. If you have a battery powered digistat, try new batteries....Have seen that 'problem' a few too many times

Greebo · 9 Mar 2010 at 09:13

St0rmer66 said:
But then the hot water wouldn't work. It uses the same pump for both on a combi.

As for the OP: it depends entirely on which boiler you have, it could be a number of things. Unless you've set the timer wrong then it's unlikely to be anything you can fix yourself.

Sorry, my mistake. My combi has a seperate pump for hot water and centra heating and when our central heating failed but the boiler still did hot water, it was the pump which was faulty.

As said though, it varies so much between combi boilers so can be anything but at least it's heating so likely to be a cheap repair.

weird_dave · 9 Mar 2010 at 09:32

Mine only uses the pump for the rads, hot water just uses mains pressure. It has 2 heat exchangers to do it tho, if I turn the hot water on below the detection threshold while the heating is on, I get super hot water

Not meaning to hijack, but anyone know how to get trapped air out of a heat exchanger?

PatZ1989 · 9 Mar 2010 at 13:20

Generally if nothing seems obvious ur looking at a call out

mick4545 · 9 Mar 2010 at 21:20

I've had this problem with a Worcester\Bosch combi boiler. It was the diverter valve. A soaking with WD40 sorted it out.

This was 2 years ago and its still woking.