If your Comfort Touch’s screen is blank, then it’s not getting any power. Plug in your boiler and check the cables and connection to the thermostat.
It’s up to you whether you want your Comfort Touch to display a fixed room temperature, or not. Adjust this setting on your Comfort Touch’s configuration screen. Press the ‘+’ and ‘–’ symbols simultaneously for two seconds to enter this configuration screen. Using the ‘+’ and ‘–’ symbols, advance to the ‘Stby’ screen. Select either ‘On’ (room temperature displayed by default) or ‘Off’ (room temperature hidden by default).
The flame symbol means your central heating system is currently running to reach your desired heating level.
This means the boiler has a fault. The ‘F’ symbol may or may not be followed by either a single- or double-digit code. Please consult your boiler’s user manual for an explanation of this fault code. Please contact your installer if this doesn’t resolve your problem.
This means that your central heating boiler is not Smart Power-compatible and won’t work with this thermostat.
This means that OpenTherm® communication between the thermostat and boiler is not responding. Check the thermostat’s connection to the boiler. Please contact your installer if in any doubt.