Recent content by wilro15

Yes thats the right number and it does have that bump. I've ordered a new head which should be here sometime next week. Thanks!

Hi Space Cat, It is the terminal labelled "2" that is not wired up which is "CH OFF".

Here is a photo of the side of the valve It says "Valve used for hot water only" - maybe I'm dumb but this doesn't sound like a 3-way valve to me.

Oh so nothing to get excited about then. :( So I've diagnosed that Switch S1 doesn't work - does this mean the whole valve needs to be replaced?

Ok more weirdness... The valve is still wired up to permanently on as suggested above. If I turn OFF the power I can hear the valve reset to neutral HW only position. If I then turn ON the power, switch on the CH on the programmer and push down the valve lever FAST the system comes on...

So I followed the instructions posted by D_Hailsham for testing the CH by wiring it up to permanent live and the valve did nothing. So this means Switch S1 is not working. How is this resolved?

Thanks for the info everyone. My programmer is a Siemens RWB9 and has these connections: N L 1 (HW) 2 3 4 (CH) Number 2 is not wired up.

So I have been told my system has a 3-way valve that can switch between HW or CH or both. The valve has a lever on the side which is spring loaded. When I push it down the water goes through to both HW and CH. When I release it and returns to rest the water goes only to HW. In this state...

The system did have some crap in there, last year it was power flushed. A number of the pipes had become blocked up due to corrosion and these were replaced. The radiators don't get cold at the bottom - but at the top - as one of them continually needs to be bled. I hope its not the...

For what its worth I did replace the room stat and it made absolutely no difference. Bugger.

What do you mean by place a wire between the wiring in the room stat?

For what its worth, it wasn't the Synchron motor. I replaced it last night and nothing has changed. I hit "CH ON", the red light comes on the controller but no activity anywhere else. I hit "HW ON" and everything comes to life but the radiators stay cold. If I then manually push the lever...