Honeywell v4073 'ticking', radiators warm up with the HW

[markjp1]

Good Morning, I have a ticking V4073 3-port motorised valve.
When the HW is on, with CH off, the Valve will tick and the rads warm up, with the CH on there seems to be no appartent problem, either with CH on it's own or at the same time as the HW. I would welcome any ideas as to the problem.

Thanks
Mark

Untitled

• markjp1
• 16 Mar 2009
• 1

Untitled

• markjp1
• 16 Mar 2009
• 1

Untitled

• markjp1
• 16 Mar 2009
• 1

 

[doitall]

Micro switch is stuck, buy a new actuator, provided the old one has a dimple on the case.

Perhaps a photo of the valve.

 

[markjp1]

Thank you, I have put some images in my album, It's a bit tight in my airing cupboard so I could not get a good pic I am afraid.

//www.diynot.com/network/markjp1/albums/

 

[OilLecky]

Yup. Micro-switch duff. Renew the actuator head.

 

[markjp1]

Many Thanks for your replies.