If you are unsure about what to do we recommend contacting a skilled local tradesperson. You can search for a heating engineer on yell.com.
Visit our Heating your home page for more information on the heating systems in your home.
Can you see 'communication fault' flashing on your thermostat controller? Back to top
First of all check to see if your boiler is running.
This type of issue can be caused by low battery power on your radio thermostat, which controls your boiler. This can be resolved by replacing the battery in your thermostat.