timeguard

Quick bit of advice i have a mains eco compact combi. Currently how i activate it for the heating is by turning the old thermostat to the temperature i want-not via the actual boiler which seems to be how the boiler functions. Im intending on swapping it to the Timeguard 2 hour booster as...

I've recently moved into a new flat. I have a Timeguard NTT04 (timer, not thermostat) plugged into the mains to control our Worcester Greenstar Compact boiler. I've plugged all the timings into the Timeguard and the green light comes on when it's supposed to start the heating but the boiler...