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motorised valve failure, perhaps?

If it's an old-style ball-valve with a brass float-arm, then the arm needs to be bent downwards carefully in order to lower the float level. If you could post a picture, this might help in giving you more specific advice.

Here's a link to the User Guide on Honeywell's website http://www.honeywelluk.com/productdownload.aspx It might be worth trying the Reset button on the front panel of the programmer; if that doesn't work for you, I think it's time to replace the programmer. I've just replaced my ST699...

Difficult to answer without a good knowledge of Spanish litigation procedures. In the UK, I would be suggesting that you write a formal letter demanding payment in accordance with your contract (I take it that there was a written contract at the outset) and stating what action you will take...

thanks, guys!

tryitandsee: thanks for your reply - shall I draw off a pint for you, and would you prefer it in a tankard or a straight glass? :lol: I've re-read the instructions on the Sentinel inhibitor, and it doesn't mention holding some back and pouring it into the f/e tank when full. I take your...

Earlier this year, I replaced several old Danfoss TRVs on my system with Drayton RT-111 TRVs. I took the opportunity to clean the system using Sentinel X800 (applied strictly in accordance wit the manufacturer’s instructions), and having flushed it twice, then added Sentinel X100 inhibitor...

Compare an ideal outcome with the costs if it were to go disasterously wrong. If all goes smoothly, you will have gained a little experience, (perhaps) earned a little money, and earned some esteem. If however it goes wrong, you may end up forking out for a pro to put it right, and you may...

The kit comprises a replacement front cap, and a replacement insert. Instructions are provided; it's supposed to 'de-sensitise' the valve; and as I said, it worked for me.

From your description, this sounds like a Torbeck valve. These are made by Opella, and the makers are aware that water hammer is a problem in some installations. They will provide a "prototype parts kit" free upon request - fitting this cured the problem for me. Try giving them a call on 01432...

I know that this thread is amost 3 years old, but I thought I'd share my experience anyway. I fitted a side-entry Torbeck valve yesterday, and found that just before it closes, there was a very loud juddering sound in the rising main pipework, somthing like a pneumatic drill being used in the...