valliant boiler

west · 26 Sep 2006

I have a combi boiler that works perfectly when the thermostat kicks in the central heating, but will not work when the hot tap is turned on. Occasionally after running the hot tap for about 3/4 minutes the hot water will suddenly start up, other times it will not.

the water pressure is about 2 bars.

Agile · 26 Sep 2006

Its probably a 242/282 with a failed diverter valve!

Tony

noseall · 26 Sep 2006

we had exactly the same problem and everyone thought it was the diverter valve.

eventually after two new dv's were fitted, we called out a vaillant engineer and he discovered it was the fan proving switch that was at fault. something to do with the air pressure sensor?

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

valliant boiler

west

Agile

noseall

DIYnot Local

Similar threads