Hot Water Issue. Dual Valve System

[JackRBaker]

Hi All

I have an issue with my hot water.

I have a gas boiler situated next to a hot water cylinder fed from a water tank in the loft.

There are two separate valves one for the heating and the other for the hot water. (No 3-Way Valve)

Both valves open when asked to via the controller (Hive System) however I only seem to be able to get hot water when the both the heating and the hot water is requested.

When the hot water is requested without the heating the valve opens but the boiler doesn’t fire up.

Any help would be greatly appreciated.
Jack

 

[Riley]

Valve not opening fully and making micro switch

 

[JackRBaker]

Valve not opening fully and making micro switch

Thanks for your reply. I will have a look into this and let you know the result.

 

[JackRBaker]

Valve not opening fully and making micro switch

Replacement valve head arrived today. Installed and solved the problem immediately. Inspected the old valve and as you said. Micro switch wasn’t making.
Thanks for your help