Tag: Y6H910RW4013 T6R Smart Thermostat

Honeywell Y6H910RW4013 T6R 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. In case of removing the old thermostat be aware that the existing wiring will no longer be used. The T6 thermostat should not be…