Resetting a Honeywell thermostat can vary by model, but a common method is switching the thermostat to "Off" and then cutting power to it for about 30 seconds. This can usually be done by flipping the breaker switch. It's a handy way to resolve some functionality issues. Have you been facing particular problems with your thermostat, or is this a routine reset? I'm here to help with any other questions you might have!