Tmaughan

I am not sure, but will ask the next electrician to make sure this has been checked. Thank you

I’m not sure. I do know, from speaking with ROTH, that the Roth box signals to the boiler to switch on. How it does it I am unsure! on my app when the temp is set higher the pump and contact free say they are ‘ON’ and then when the temp goes down it says ‘OFF’ so those two items seem to be working as and when the temp drops etc i’ve checked and both have a 2 minute delay. ROTH logged into my app remotely and said all settings are correct

Thanks for replying. I’m not sure but I’ve noted down what you’ve said so I can check with the electrician

Hi, I’m wondering if anyone has any idea whats wrong with my UFH. I’ve had two plumbers out and two electricians and so far no one has been able to locate the fault. Some background - it’s a new build and been in for one year. For the past year the UFH has worked fine. Then about 2 months ago the system stopped calling the boiler for heat (thermostats still working and calling for heat and the pump still kicked in and actuators all switched on and opened). I could switch the power off and back on and this tended to fix it. However past two works nothing I do gets it working. Plumber and electrician have said everything is setup correctly, wired correctly and mechanically sound so they are unsure on the issue. I am trying to get out developer to instruct a UFH specialist to take a look at the system, but they are dragging their feet. if anyone has any idea on potential cause I would be grateful on whats causing the boiler to not switch on even when all the manifold is functioning We have radiators upstairs and when we switch them on the boiler all works fine.