CH won't turn off: sticking valve or electrical problem?

[PilotGP]

Hi all,

My central heating combines downstairs underfloor and upstairs radiators. Downstairs works fine but the pump serving the rads upstairs comes on correctly when called by the thermostat, but very often won't switch off when the 'stat stops calling for heat, or even when the programmer goes out of the programmed hours.

It seems to be something to do with the 3-way valve - is there anything I can do to isolate the problem?

(When I speak to a local plumber he says "sounds electrical, call the electrician", and the electrician says "sounds like a plumbing problem..." :wink

Much appreciated!

 

[jtsplumbing]

Possible faulty 3 port valve or programmer. just call someone in gas safe engineer can check this out and correct the problem.

 

[Last Plumber]

Hi all,

My central heating combines downstairs underfloor and upstairs radiators. Downstairs works fine but the pump serving the rads upstairs comes on correctly when called by the thermostat, but very often won't switch off when the 'stat stops calling for heat, or even when the programmer goes out of the programmed hours.

It seems to be something to do with the 3-way valve - is there anything I can do to isolate the problem?

(When I speak to a local plumber he says "sounds electrical, call the electrician", and the electrician says "sounds like a plumbing problem..." :wink

Much appreciated!

What you need is a Heating Engineer. Then you'll have someone who is knowledgeable and experienced in both areas.

 

[Last Plumber]

Hi all,

My central heating combines downstairs underfloor and upstairs radiators. Downstairs works fine but the pump serving the rads upstairs comes on correctly when called by the thermostat, but very often won't switch off when the 'stat stops calling for heat, or even when the programmer goes out of the programmed hours.

It seems to be something to do with the 3-way valve - is there anything I can do to isolate the problem?

(When I speak to a local plumber he says "sounds electrical, call the electrician", and the electrician says "sounds like a plumbing problem..." :wink

Much appreciated!

What you need is a Heating Engineer. Then you'll have someone who is knowledgeable and experienced in both areas.