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How do I change my the batteries in my smart thermostat?

Battery Replacement

If it’s time to change the batteries in your thermostat, follow the simple steps detailed below for either the Z-Wave Smart Thermostat or the CT100 Z-Wave Thermostat.

Z-Wave Smart Thermostat

  1. Press the Mode button to change your thermostat’s mode to Off. Then pull the device toward you to remove it from its mount.
  2. Turn the thermostat over to examine the batteries for any abnormalities. If there are none, remove the old batteries.
  3. Install the new batteries. Ensure the positive (+) and negative (-) symbols on the batteries match the positive (+) and negative (-) symbols inside the thermostat.
  4. Then, place the thermostat back on the mounting plate.
  5. Press the Mode button to return the thermostat to the preferred mode.
  6. Log in to your Guardian account via myguardianhome.com or launch the Guardian app. Select the desired temperature to ensure the target temperature is being displayed on the thermostat. Note: this may take a few minutes to appear.

CT100 Z-Wave Thermostat

  1. Change the heat/cool mode to off by pressing the Mode button. Then, change the fan to Auto by touching the touchscreen when the fan icon is displayed.
  2. Next, remove the bottom cover by pulling from one side at a time.
  3. Next, remove the existing batteries.
  4. Add the new batteries. Ensure the positive (+) and negative (-) symbols on the batteries match the positive (+) and negative (-) symbols inside the thermostat.
  5. Once the new batteries are installed, reattach the thermostat’s bottom cover.
  6. Change the heat/cool mode by pressing the mode button to select the desired mode.
  7. Log in to your Guardian account via myguardianhome.com or launch the Guardian app. Select the desired temperature to ensure the target temperature is being displayed on the thermostat. Note: this may take a few minutes to appear.

For additional help, please contact our Customer Support team by calling 1.800.PROTECT (1.800.776.8328).