Honeywell FAQ

Common FAQ for Honeywell

• What is "FC" on my Honeywell thermostat display?

  "FC" stands for "Failed Communication" and typically indicates an issue with the connection between the thermostat and the heating/cooling system. Troubleshoot steps can be found in the user guide or by contacting Honeywell customer support.

• Why is my Honeywell thermostat not turning on the heating/cooling?

  This could be due to a power issue, incorrect settings, or a malfunction in the thermostat. Refer to the user guide or contact Honeywell customer support for assistance.

• How can I reset my Honeywell thermostat?

  Depending on the model, you can usually reset the thermostat by pressing the "reset" button or by using the "reset" option in the menu settings. Refer to the user guide for specific instructions.

• Why is my Honeywell thermostat stuck on "Hold" mode?

  "Hold" mode is typically used when you want to keep a specific temperature for a longer period of time. Check if the thermostat is set to "auto" mode and if the desired temperature is lower/higher than the current room temperature. You can also refer to the user guide for more information on how to change the settings.

• What does "Int" on the thermostat screen mean?

  "Int" stands for "Internal" and typically appears when there is a malfunction or internal error within the thermostat. Try resetting the device or contact Honeywell customer support for assistance.

• How often should I change the batteries on my Honeywell thermostat?

  It is recommended to change the batteries in your thermostat once a year or when the low battery indicator appears on the display.

• Can I control my Honeywell thermostat remotely?

  Some Honeywell thermostats have remote control capabilities through a smartphone app or home automation system. Refer to the user guide or contact Honeywell customer support to see if your model has this feature.

• What is the difference between "Fan" and "Auto" mode on my Honeywell thermostat?

  "Fan" mode continuously circulates air, while "Auto" mode only runs the fan when the heating/cooling system is actively running. Using "Auto" mode can save energy and reduce noise.

• How do I set a schedule on my Honeywell thermostat?

  Refer to the user guide for specific instructions on setting a schedule for your particular model. Most Honeywell thermostats have a "schedule" or "program" option in the menu settings.

• My Honeywell thermostat is showing the wrong time, how do I fix it?

  This could be due to a daylight saving time change or a loss of power. You can usually manually adjust the time in the menu settings or by resetting the thermostat.

• Why is my Honeywell thermostat showing an incorrect temperature?

  This could be due to the thermostat being installed in a location with a draft or direct sunlight, causing it to read the wrong temperature. Make sure the thermostat is installed in an optimal location and refer to the user guide for more information on temperature accuracy.

• What does "Aux Heat" mean on my Honeywell thermostat?

  "Aux Heat" refers to auxiliary heating, which is used to supplement the primary heating source in very cold temperatures. This is normal and does not indicate a malfunction.

• Can I change the display language on my Honeywell thermostat?

  Some Honeywell thermostats have language options in the menu settings. Refer to the user guide for specific instructions.

• Why is my Honeywell thermostat constantly running?

  This could be due to incorrect settings, a malfunctioning thermostat, or a problem with the heating/cooling system. Troubleshoot steps can be found in the user guide or by contacting Honeywell customer support.

• How do I switch from heating to cooling on my Honeywell thermostat?

  Most Honeywell thermostats have a "mode" or "system" button that allows you to switch between heating and cooling. Refer to the user guide for specific instructions for your model.

• My Honeywell thermostat is not displaying the outdoor temperature, how can I fix this?

  The outdoor temperature display may require an additional outdoor sensor to be connected. Refer to the user guide or contact Honeywell customer support for assistance.

• What is the "Schedule" feature on my Honeywell thermostat?

  The "Schedule" feature allows you to set specific times for the thermostat to adjust the temperature throughout the day, providing energy savings and comfort control. Refer to the user guide for instructions on setting a schedule for your model.

• Can I adjust the temperature range on my Honeywell thermostat?

  Depending on the model, you may be able to adjust the temperature range in the menu settings. Refer to the user guide for specific instructions.

• Why does my Honeywell thermostat have a blinking flame icon?

  The blinking flame icon indicates that the heating system is actively running. This is normal and does not indicate a problem.

• Can I replace my Honeywell thermostat with a different brand?

  It is possible to replace your Honeywell thermostat with a different brand, but you may lose certain features or compatibility with your heating/cooling system. It is recommended to consult with a professional before making any changes.

• How do I know if my Honeywell thermostat is compatible with my heating/cooling system?

  Honeywell has a compatibility checker tool on their website, or you can refer to the user guide or contact Honeywell customer support for assistance.

• What does the "Recovery" feature do on my Honeywell thermostat?

  The "Recovery" feature allows the thermostat to start heating/cooling early in order to reach the desired temperature at the scheduled time. This is useful for saving energy while still maintaining comfort.

• How do I lock the settings on my Honeywell thermostat?

  Some Honeywell thermostats have a "lock" option in the menu settings, which allows you to restrict access to the settings. Refer to the user guide for specific instructions for your model.

• My Honeywell thermostat is showing "Lo Batt" on the display, what does this mean?

  "Lo Batt" stands for Low Battery and indicates that the batteries need to be replaced. Refer to the user guide for instructions on how to change the batteries for your model.

• How do I change the temperature units (Fahrenheit/Celsius) on my Honeywell thermostat?

  Refer to the user guide for specific instructions on how to change the temperature units for your particular model. This can usually be done in the menu settings.