Help putt solution in radiators last night . radiators still working and flame in boiler is still lit but no h

Question

Help putt solution in radiators last night . radiators still working and flame in boiler is still lit but no h

Answer 1

Make sure the taps on each end of the rad are open, check every rad.  If that doesn't work make sure the pump is working.  If it's not that then possibly air in the system, you may need to bleed them.  Beyond that you may need a plumber.

Answer 2

You may have other things in the system that if they are not working properly will cause the valve to not function.

Make sure you are getting a signal from the pilot sensor.

Make sure there isn't a power ventilator that isn't working

Make sure the flow sensor isn't tripped.

Make sure the overheat sensor isn't tripped.