If “-AC” appears in the display, this means that the thermostat has lost AC power from your system transformer. You will most likely need to contact a local heating & air conditioning contractor in your area to service your equipment.

Your thermostat is equipped with a feature that is used to remind you to check/change your filter, UV light(s) and/or humidifier pad(s). The feature can be set for off or for a number of days up to 365. When the time period is up a reminder will flash in the display. To remove the reminder and start the countdown over, simply press the RETURN button.

The BACK, NEXT and RETURN button are only used when configuring your thermostats User or Installer settings. You will not need these buttons during normal daily operation.

Some heat pump systems have a system fault output that, when connected properly to your Braeburn heat pump thermostat, will indicate when there is a problem with your heat pump system. For service, call your installer or local heating/cooling contractor.

If the display is flashing the word EMER it indicates that your thermostat is in Emergency Heat mode and that the Emergency Heat is currently running. Emergency Heat is a backup heating system commonly used with heat pump systems. When in Emergency Heat mode your heat pump compressor will not be active. Emergency Heat mode is typically used when your heat pump system is not functioning or when it is too cold outside for your heat pump system to adequately maintain a comfortable temperature.

If this thermostat was just recently installed it is possible that it was not configured for the appropriate system type. This thermostat is factory set for a 1 Heat / 1 Cool conventional system. If it is being installed on multistage or heat pump equipment the “System Type” option needs to be adjusted in the Installer Settings mode. Please see the installer manual.

The temperature sensed by the thermostat is lower than the 40 F (4 C) lower limit of the thermostats display range. The display will return to normal after the sensed temperature raises to within the 40 to 99 F (4 to 37 C) display range. Turn on the heating system or use other methods to raise the temperature. This condition could occur from the system being turned off during a cold weather period or upon installation when the thermostat has been stored for a long period of time in a cold vehicle or location prior to being installed.

The temperature sensed by the thermostat is higher than the 99 F (37 C) upper limit of the thermostats display range. The display will return to normal after the sensed temperature lowers within the 40 to 99 F (4 to 37 C) display range. Turn on the cooling system or use other methods to lower the temperature. This condition could occur from the system being turned off during an exceptionally warm period or upon installation when the thermostat has been stored for a long period of time in a warm vehicle or location prior to being installed.

To enter the USER SETTINGS mode where you can adjust settings such as your temperature differential, press and hold the RETURN button for 4 seconds. The display will then switch to the USER SETTINGS mode. Press the RETURN button to cycle through the user options and the UP or DOWN arrow buttons to cycle through selections for each particular user option. After a few moments of inactivity the display will return back to normal mode.

Your thermostat may be configured for an electric furnace. When configured for an electric furnace the fan comes on immediately when there is a call for heat. Gas furnaces need a couple minutes of warm up time before the fan runs. Please see the “installation” section of your owner’s manual for information on how to properly set your gas/electric fan option. All manuals are available on this website.

Most gas furnaces have a short warm up period before the fan will come on and circulate the warm air throughout your ductwork. This is to prevent cool air from blowing at initial startup and is not controlled by the thermostat.

If you have a multi-stage heating and/or cooling system (2 or more stages of heating or cooling) then this means that the 2nd stage (auxiliary stage) of heating or cooling is running based on the calculated need imbedded in the logic of your Braeburn thermostat. If you do not have a multi-stage heating or cooling system then AUX being displayed means that a multi-stage thermostat was installed on your single stage system and you will occasionally see AUX displayed on the screen, however it does not affect the function of your thermostat or system.

Your thermostat may have been wired incorrectly or you are having a problem with the heating system (heat pump) system itself. You may need to call your installer or a local service contractor in your area.

Put the thermostat in the OFF mode. Remove the batteries (if equipped) and press the reset button located on the front of the thermostat. Replace the batteries and move the system switch to the HEAT position and then try running your heating system (furnace) again. If the problem persists then you may have a problem with your heating system (furnace) that is causing it to run intermittently or turn off prematurely. You may need to call your installer or a local service contractor in your area.

Put the thermostat into the OFF mode. Remove the batteries (if equipped) and press the reset button located on the front of the thermostat. Replace the batteries and move the system switch to the HEAT or COOL position and try running your heating or cooling system again. If the problem persists then you may have a problem with your heating system that is causing it to not operate properly. You may need to call your installer or a local service contractor in your area.

Many Braeburn thermostats include a feature called Residual Cooling Fan Delay. This feature allows the fan to run 0, 30, 60 or 90 more seconds after your cooling compressor turns off. This will blow the remaining cool air through your ductwork and increase overall efficiency. To adjust the Residual Cooling Fan Delay feature, please see your users manual. Users manuals are available on this website.

If your thermostat requires batteries, you need to change them when the battery icon appears in the display. This indicates that the batteries are becoming low and should be changed as soon as possible. Always change batteries when you will be away for a long period of time.

If your thermostat requires batteries, use only type "AA" alkaline batteries. Make sure to install the positive (+) and negative (-) ends of the batteries correctly as shown inside the battery compartment.

Some Braeburn thermostats require 2 "AA" alkaline batteries while many newer models can be battery operated, directly wired (hardwired) or both. Check your user manual for specific instructions.