Why is my boiler overheating?
I'm using Tado radiator thermostats with the Internet Bridge and my existing boiler thermostat. I thought I could leave the boiler on permanently and use the smart schedules to control the rads (Tado technical support agreed this would work). But the boiler has cut out due to overheating twice in two days. I've gone back to my boiler timer for now but does anyone know why this might be happening?