Motorised valve

[Joe82]

Hi everyone,

I have an open vented system with a 3 port valve.

I aim to drain my system and add inhibitor as I have been treating it for the last fortnight with sentinel x400.

After checking the motorised valve I found that the manual lever was floppy but I expected it to have resistance to move the valve.

As there is no resistance on the lever I thought this may point towards the valve being stuck but my heating and hot water work ok.

Any ideas would be much appreciated.

 

[footprints]

The lever will move a little way before it operates the sprung valve try pushing it gently a bit further. Should go right over to latch in the notch.

Regards,
footprints

 

[Joe82]

Thanks for the reply,

The lever moves fully over past the bit where it is supposed to latch in with no resistance at all.

The valve is a Honeywell one.

 

[footprints]

Yes it sounds like it is stuck then, the manual position (locked in the notch) is both ports open for draining / filling and removing air, so you will get both services, but not proper control.

 

[45yearsagasman]

Have you tried switching off the power to your heating system (at the fused spur) to check that the valve is not being held over?

 

[Joe82]

Thank you,

What I can't understand is from what I have read on here if the valve is stuck in say mid position I would expect my heating to come on even though I only want hot water and the heating is off but this isn't happening.

 

[footprints]

May not be quite far enough to make the microswitch.