MAIN Eco Elite Boiler - no hot water. Heating fine.

Emgee71

Hi,

Hope a techie can help please. Have a Main Eco Elite combi boiler which has worked fine. Woke up today and the heating is working but there is no hot water - not water at all in fact from the hot taps. I think this means the hot system has air in it perhaps? If so how do I bleed it? I bled all of the radiators in case that would help (they were all fine as it happens) but no change. Heating works but water does not. The system pressure is fine - about 2.0 bar and well within the green zone on the gauge. The water thermostat is turned up - nothing has been changed from when it worked yesterday to when it doesn't work today.

Any thoughts/ideas? Help!

Cheers, Mark

Le_Kirk

Presume you have cold water from mains. When you turn on hot water tap, do you get a demand light on the boiler? If not suggest flow switch is faulty.

GunJack

my parent's combi-boiler had this problem recently- there's a 2-way switched valve which goes between hot water and heating which had failed (stuck in one position, in your case heating) and needed replacing. HTH.

kwikbreaks

What the two posters above said are the likely faults.

With a combi boiler the water you get through the hot taps is just mains water that has passed through the boiler and there is nothing to bleed. The water in the rads is the same water all the time and may need bleeding but it won't have any effect on the hot water side of things.

macman

As GunJack implied, the first suspect will be the divertor valve, since the CH is still functioning.
However it's less usual for it to fail completely, you normally get intermittent DHW as a warning for a while. However your RGI will be able to diagnose it.
If you've bled all the rads, the system pressure should have dropped, so you may need to top it up again.