User Manual Q&AAnswer
Jan 26, 2025 - 10:56 PM
To adjust the temperature calibration for Zone 1 on the RTH21 Programmable Thermostat Coldbuster Dual, follow these steps:
1. Turn the thermostat off by pressing the power button.
2. After turning the thermostat off, press the mode/menu button.
3. Use the up or down arrow buttons to navigate to the "Temperature calibration for Zone 1" option.
4. Press the mode/menu button to select the option.
5. Use the up or down arrow buttons to adjust the temperature calibration. Each press will increase or decrease the calibration by 1°C.
6. Once you have adjusted the calibration to your desired value, press the mode/menu button to move to the next menu.
7. Press the mode/menu button again to store and exit the menu.
Please note that you should only modify these parameters if it is essential, as the default calibration should be accurate.
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