Motorised valve

[slug]

every time i turn on just the hot water the radiators heat up as well someone said its the motorised valve is this true

 

[aggis]

We need to know more, what type of boiler [ make model & system type]?

 

[slug]

the boiler is a poterton the system i don't no

 

[Dotty]

What type of valving have you? 1 3port valve - 3 pipes going to it? or 2 2port valves - 2 pipes going to it? What make are the valves? Can you post a picture?

But yeah, if you've a 3pv then it could very well pass.

 

[slug]

3 port lifstyl

 

[fuzzy]

could be the fault of the 3 port but does sound more like a wiing fault, has it always been like this since it was installed or just recently?

 

[slug]

recently

 

[dontknowitall]

My guess is it's the motor in the zone valve.

 

[slug]

a new valve should fix the problem then

 

[dontknowitall]

Just the motor inside it. Cost say around £15 for the part (half hour). The actuator (metal box) is around £50 (one hour). If it's the whole thing you're looking at around £90 (drain down and refill around 3 hours).

9 times out of 10 it's just the motor. Then 9 times out of 10 it's the actuator.