hot water won't turn off

[ShaunCorbs]

Now try your heating and hot water systems eg one at a time does everything work eg boiler come on pump etc

 

[Bradley31]

Turn the fused spur off and remove the grey wire and make safe (when you turn power back on this might be live)

I have just realised that we have had some underfloor heating out in downstairs in an extension and they wired it in next to the boiler. Could they have wired something in wrong there? We had noticed that our water all winter was really hot and we had been using a lot of oil. I think I have only noticed this issue when the heating finally went off. Maybe this has been happening since the new bit of wiring went in!

 

[moonlight]

Thats sounds like a possibility.

 

[ShaunCorbs]

Yep maybe do you have an extra port valve by the manifold?

 

[Bradley31]

Yep maybe do you have an extra port valve by the manifold?

I think the grey wire I have disconnected upstairs is the one in the frost stat in the screw without a number to the right of slot 4

 

[Bradley31]

Now try your heating and hot water systems eg one at a time does everything work eg boiler come on pump etc

Heating came on as it should with the programme. HW didn’t do anything

 

[ShaunCorbs]

Was the stat up ? You may have to lift it due to upto temp on the cylinder

 

[Bradley31]

Was the stat up ? You may have to lift it due to upto temp on the cylinder

Good thinking! Turned up the stat and it kicked in as it should! It’s a miracle still not convinced the the under floor heating is wired up right. Not sure what to do next now?

 

[ShaunCorbs]

Test the whole system eg leave it a couple of days and see how it goes / what doesn’t work

Don’t forget to turn the star back down to 60

 

[Bradley31]

Test the whole system eg leave it a couple of days and see how it goes / what doesn’t work

Don’t forget to turn the star back down to 60

Thanks for all the help today