Honeywell TH8000 Series manual Replacing Your Batteries

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Replacing Your Batteries

Not all thermostat models require batteries. If your thermostat has batteries, a low battery warning flashes on the home screen for approximately 30 days.

NOTE: If the batteries are not replaced when the Low Battery warning is flashing, the LO batt screen will display continuously and the thermostat will not operate until the batteries are replaced.

M19963

NOTE: Although the thermostat has a low battery indicator, replace the batteries once each year to prevent leakage and to prevent the thermostat and heating/cooling system from shutting down due to lack of battery power in the thermostat.

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Contents TH8000 Series Programmable Thermostats Contents Features Down Arrow Home Screen Key DescriptionTime Home Screen Display DescriptionEditing Schedule Programming Your Heating and Cooling ScheduleM19955 Saving Changes Cancelling a Schedule Period OK to Pick Multiple Days FAN Setting Time Operating Your Thermostat Setting Fan and System KeysSetting FAN KEY Setting System KEYHold Temperature Until Temporary Hold Setting Temperature OverridesPermanent Hold Vacation Hold Inside Fan Status Displayed on Home Screen Fan ScheduleManual Override of Fan Schedule Replacing Your Batteries Remove thermostat from the base by pulling straight out Batteries Cleaning Your Thermostat Screen View Outside Temperature Select Models Reading Your Outdoor Temperature Select ModelsONE Remote Indoor Sensor Installed Select Models Reading Your Remote Indoor Temperature Select ModelsMultiple Remote Indoor Sensors Installed Select Models Resetting Expired Timers Reminder Timers Select ModelsScreen Locked View or Reset Timer Settings Before They ExpirePartially Locked Screen Reading Your Inside Humidity Level Select Models Fully Locked ScreenInside Dehumidification Control Select Models Temperature RecoveryRecovery Setting Calendar When Thermostat is First Powered Advanced Heat Pump Features Select ModelsSetting Calendar Setting Calendar After Thermostat is Already FunctioningSET Current DAY SET Month Advanced Settings Press to Exit Change User Setup Current Setting User Setup Number 0140 Current Calendar Month User Setup Number 0160 Schedule Options User Setup Number 0150 Current Calendar DateUser Setup Number 0320 Display Temperature Shown in F or C User Setup Number 0500 Furnace Air Filter Timer User Setup Number 0330 Daylight Savings On or OffUser Setup Number 0520 UV Lamp Timer User Setup Number 0510 Humidifier Pad TimerUser Setup Number 0640 Time Format Exit User Setup User Setup Number 0670 Screen Lockout FunctionFrequently Asked Questions and Answers Limited Five-Year Warranty Customer Assistance