HW & HTG off - radiators hot & pump still running -

[steveco]

Please can someone advise me on this:-
The boiler continues to run and the radiators stay hot even with the heating and hotwater in the off position on the timer control - The only way I can stop the boiler and pump running is to switch off the mains switch. - The system has a 3 port motorised valve and Drayton flow share relay. Hot water cylinder, circulation pump and room thermostat are new. - The flowshare valve lever is very stiff to move (not sure if this is normal).
Any advice would be much appreciated.
Thanks
Sven

 

[baxpoti]

vot boiler do ya hev Sven

 

[kevplumb]

The flowshare valve lever is very stiff to move

might be a place to start

 

[steveco]

Ya - de boiler is a IDEAL freestanding under the counter jobby. - Please should the little lever sticking out the front of the motorised valve be easy to move? - My Swedish fingers are finding this quite a difficult task ( I am not having de frost bite yet)

 

[ChrisR]

You probably have one of these

and an RB1 or RB2 box.
It's v expensive for the actuator only, and the valve isn't available now, I believe.

Fit a modern valve complete, and rewire it.

 

[steveco]

Many thanks ChrisR for the advice - Please, why is the pump still running with the hot water and timer in off position on the timer control box?

 

[ChrisR]

Either the programmer is faulty, or, more likely, because (as the programmer doesn't directly control them) the stuff in between is faulty.
Test with a multimeter.

Look at the relay, you may see the contacts stuck in which case you can change it for a DPDT type of suitable rating.

 

[steveco]

Many thanks for your help - may your Abba records never scratch and your Volvo never falter !
Sven.