Simple checks before reporting
If there is no gas smell, alarm, leak or other danger, check that the home has gas and electricity available, using meter/supply information rather than testing by lighting appliances. Check the thermostat settings and batteries if applicable, the timer and any visible error code. A power cut or disconnection may have changed the timer or other saved settings. Restore user settings according to the manual; smart controls may need re-pairing with connected devices. Photograph the visible error code and note the make/model without opening the casing.
