How To Replace Battery In Lux Thermostat. To replace the batteries in the thermostat. Mount the thermostat on an inside wall about 5 ft.
This setting should always remain enabled unless the thermostat is being powered by System Power alone without any batteries present. Remove the used batteries from the battery tray and discard appropriately. If CHANGE FILTER is reading on the LCD screen the number.
Press the Hold button and then release it.
Should it fail to do so however you can follow this Lux thermostat troubleshooting procedure to try and. Slide the new batteries. Be sure that they are installed with their polarity and - correct. Press and release the Next button in the center of the thermostats programming panel three times.
