When I arrived at Gerry’s home she let me know that the thermostat wasn’t working. I looked at the thermostat and it was turned off. She informed me that she wasn’t told how the thermostat worked when it was installed. I asked if she used the programming or preferred to just set the temp herself. She prefers setting the temp herself. I removed the programming from the thermostat and set to 25c. Showed her how to use it and what 2 buttons to press to adjust the temp. Checked the furnace, all appears to be working at this time. No charge courtesy call.