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Introduction Most issues with our valves can be resolved by cleaning the internal components with a mild acid solution. To do this, uninstall the unit, plug all openings except one, place the unit in a sink or tray, and pour the acid solution into the open port. Allow it to soak for a few hours, then rinse thoroughly and reinstall. If necessary, disassemble the unit and clean all parts individually. New Intellifaucet boards Our Intellifaucet logic boards, introduced in 2017, include new features that can sometimes be misunderstood. Certain adjustable settings may cause issues if altered improperly. Pressing and holding the STOP button for 3 seconds activates calibration mode, while holding it for 5 seconds enters personality mode. Accidental activation of these modes can lead to temperature or operational errors. Calibration errors If calibration values are accidentally altered, you may experience temperature errors or a complete loss of temperature control. The default calibration values for both gain and offset are 0. Please refer to the Intellifaucet Owner's Manual, available online, for detailed calibration instructions. Keypad errors Occasionally, key presses may not function as expected. This issue can often be resolved by unplugging and replugging the internal 12-wire cable, which removes any corrosion that may have accumulated on the connector. If all other solutions fail, the keypad may need to be replaced with a new one. Personality We now use a single microcontroller for all our products. However, each faucet size requires specific preset values to function correctly. Additionally, our Batch Intellifaucets require different settings than our Intellifaucet K and RK series. If a Batch unit is mistakenly configured as a K-type Intellifaucet, it will not read the flowmeter, and the Batch Active LED will remain constantly illuminated. Here's how to set or reset the personality values: 1. Press and hold the STOP button for 5 seconds. The display will show 1-16. 2. Press the appropriate key on the keypad once to set the personality. See the image below for the key values. 
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