関連ワード:  why does my thermostat say stage 2    why does my thermostat say stage 2 heat    why does my thermostat say cool stage 2    why does my lux thermostat say stage 2    why does my thermostat say stage 1 and 2    why does my thermostat say stage 1 and 2 but    why does my nest thermostat say heat stage 2    why does my nest thermostat say cool stage 2    why does my thermostat say heat on stage 1 and 2    what does stage 2 mean on thermostat