We had a new boiler fitted last July through our builder. Guys who did initial install were great and nice tidy work. They put in a Vaillant system boiler, Instinct cylinder and the Vaillant sensoHome control.
We had issues straight away with the radiators coming on when it was hot weather and should only have been hot water. Guys kept saying it was the controller but Vaillant said it wasn't. Installers came out and changed some pipe work around that initially seemed to fix it. This was ongoing until colder weather and then they said rads just needed balancing (builders son did this by just turning up flow on all that we felt were too cold) and they told us issue was fixed.
Now it's warmer weather and rads are on even though we have set required room temp to 17 and the thermostat is reading 23.5 due to rads being hot! Not all rads are on. The downstairs ones and the loft ones are but the first floor aren't. Currently we are having to manually turn them on and off with TRV or set whole heating to off on control. That's fine in really hot weather but sometimes you need the chill taken off in morning/evening.
Any thoughts on what this is? Anything we can check ourselves? Otherwise will get someone out but not original installers as they don't seem to be able to fix it.
We had issues straight away with the radiators coming on when it was hot weather and should only have been hot water. Guys kept saying it was the controller but Vaillant said it wasn't. Installers came out and changed some pipe work around that initially seemed to fix it. This was ongoing until colder weather and then they said rads just needed balancing (builders son did this by just turning up flow on all that we felt were too cold) and they told us issue was fixed.
Now it's warmer weather and rads are on even though we have set required room temp to 17 and the thermostat is reading 23.5 due to rads being hot! Not all rads are on. The downstairs ones and the loft ones are but the first floor aren't. Currently we are having to manually turn them on and off with TRV or set whole heating to off on control. That's fine in really hot weather but sometimes you need the chill taken off in morning/evening.
Any thoughts on what this is? Anything we can check ourselves? Otherwise will get someone out but not original installers as they don't seem to be able to fix it.