Mid Position Actuator not working?

[newdiy]

hello, my mid position actuator only switches itself to HW posistion and not to CH when called. however I can use the manual lever to move it to CH to get heating.

The model is called BGMVSP-23. it has W-M-H three positions and has lever on the opposite side of W-M-H. Don't know what it is for. I can press it and it release itself.

what is wrong with my actuator ? If it needs replacing, do I call a plumber or electrician? which model and make is compatible with my actuator?

Appreciate for any help you may offer.

Many thanks in advance.

 

[superdupergasman]

This is a British Gas Mid Pos actuator.

An ACL one will fit in its place.

HOWEVER it could be the room stat or timeclock that is the problem.

One screw removes the cover of the valve alowing you to test for voltage to the motor with a multimeter.

 

[newdiy]

thank you for your reply.

I can hear clicking sound when adjusting the room stat to increase and decrease temperature.

timeclock is digital and it's BG brand.

When CH light is on and HW light is off, the actuator still points to HW, it can not switch itself to CH.

does this mean that timeclock is not in working order?

Don't have multimeter available. Anything else I can check?

 

[seco services]

no i would opt for the motorised valve motor (synchronous motor)
take the lid off the valve and place a meter on the wires
or turn hw off and turn heating on you'll hear the motor and the lever should move to h

 

[twgas]

if you dont have a meter there are 3 basic options;

1) borrow/buy one

2) get an engineer in

3) throw parts at it till it works,
I would say motor first

 

[newdiy]

thank you seco and twgas.

no i would opt for the motorised valve motor (synchronous motor)
take the lid off the valve and place a meter on the wires
or turn hw off and turn heating on you'll hear the motor and the lever should move to h

I tried and turned off HW and turned on heating, the lever does not move to H automatically. however, I can move lever to H by hand.

if you dont have a meter there are 3 basic options;
1) borrow/buy one ....

with a meter, what sort of voltage should I look for?