The latest firmware release introduced a default maximum temperature setting of 194°F (90°C) for safety reasons. While you can set a higher temperature (up to 230°F) in the app, the sauna will only heat to the default limit unless adjusted manually on the HUUM UKU Controller.

How to Adjust the Maximum Temperature on the HUUM UKU Controller:

1. Access the Main Menu
   Press and hold the UKU Controller for 5 seconds until the main menu appears.

2. Navigate to Heating Settings

   • Use the controls to select Heating Settings.

   • Set your desired maximum temperature (up to 230°F).

3. Save and Exit

   • Press the back button to return to the main menu.

   • Confirm 4 precautionary warnings to finalize the change.

4. Verify the Change
   Once completed, your sauna’s maximum temperature should now reflect your updated setting.