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:
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Access the Main Menu
Press and hold the UKU Controller for 5 seconds until the main menu appears. -
Navigate to Heating Settings
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Use the controls to select Heating Settings.
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Set your desired maximum temperature (up to 230°F).
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Save and Exit
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Press the back button to return to the main menu.
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Confirm 4 precautionary warnings to finalize the change.
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Verify the Change
Once completed, your sauna’s maximum temperature should now reflect your updated setting.
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