Vaillant diverter valve

It might also be worth checking that system is free of debris etc. whcih might be jamming the valve.

Thanks for the reply, it was drained and refilled a few weeks ago to add fresh inhibitor, might be connected I suppose. I'll take the valve off later and check for anything obvious...

Lee

We had one of these fitted about 4 years ago I think. had the diverter valve tweeked twice, replaced twice. It was definately a manufacturing fault, I believe the valve gradually unwound itself or something. Turning the boiler on and off seemed to fix it most of the time but was obviously a real pain..specially as the thing tended not to work for the morning rush.

The guy that fitted ours also fitted one at a similat time for my father in-law. Exactly the same problem. Took a while for us to convince vaillant it was a problem but then we had a guy come round who admitted it was a known fault. The company that produced the valve apparently changed the spec, and I believe this problem put them out of business...but that could just be the boiler man talking the tail up. Since our final replacement about 4 years ago, we haven't had a problem.

I wouldn't have though you'd need a warranty given this was a fault with the part. If you need any back up I could send you details of the dates/times and possibly some job numbers from my service book.

Ant.

Snip

Thanks, a phone call to Vaillant is in order on monday then.

Lee