My system does not reach temperature any more. Even if I set the temperature to 25C, it shuts off
I have 14 radiator valves and a smart thermostat.even if I set the smart stat to 25C, the system turns off at about 19C in the smart stat zone. The app says the system is heating but the boiler turns off and it seems to control at a low temp. The boiler is fine for HW and the heating works, but not to the correct level.
if I activate the new boost feature everything is fine, so I think the system is ok, it’s as if I have a SW bug.
I have recently added two remote room thermostats, could this be linked to the problem?