that's exactly the case the hot water works fine with programmed times, programmer responds to the wireless thermostat, but when heating comes on it wont activate the boiler itself nor the pump valve
Hi
I have similar problem with LP241
after changing to T720R the heating wont start the boiler
the wiring looks exactly the same as LP241 but for some reason it wont bring up the heating.
the water heats ok its just the central heating