Tag: Y6H920RW5031

Honeywell Y6H920RW5031 T6 Smart Thermostat Installation Guide Turn OFF the power and remove the old thermostat To ensure your safety, always make sure mains power is switched OFF before accessing wiring. Before removing the old thermostat take a picture of the old thermostat’s wiring as reference then proceed to installation. The T6 thermostat should not…