Hi,
I have a problem when ever I start my central heating after sometime it trips and I have too reset it by pressing the button on the thermostat chamber but after sometime this show red light again i.e it stopped
Please help how to fix it and why I have to reset it so many times
Thanks

Check the wiring from the thermostat to the furnace. It could be damaged and shorting somewhere. Once you find out where, it might be a simple as taping the damaged wires.