- Ensure that the programmer board ‘XDP-2W’ is powered and connected to a 12V AC power supply when using an elevator control board that operates with a 12V AC power supply. If the programmer board ‘XDP-2W’ is connected to a 24V AC power supply, make sure to connect a 24V AC power supply to the suitable elevator control board.

- Confirm that the positive terminal supplying power to the arrows is connected to the ‘CM’ terminal. Connect the negative terminal to the common of the arrows on the elevator control board. Connect the ‘UP’ arrow terminal on the programmer board ‘XDP-2W’ to the upward arrow terminal on the elevator control board, and connect the ‘DN’ arrow terminal on the programmer board ‘XDP-2W’ to the downward arrow terminal on the elevator control board.

- Connect all the signals of the indicator ‘A-H’ from the elevator control board to the programmer board ‘XDP-2W’.

- If the preceding steps are executed and the issue persists, kindly reach out to our technical support team for assistance.

- Ensure that the arrows are connected correctly following the instructions in the indicator’s user manual. Confirm that the positive terminal supplying power to the arrows is connected to the ‘CM’ terminal. Connect the negative terminal to the common of the arrows on the elevator control board. Connect the ‘UP’ arrow terminal on the programmer board ‘XDP-2W’ to the upward arrow terminal on the elevator control board, and connect the ‘DN’ arrow terminal on the programmer board ‘XDP-2W’ to the downward arrow terminal on the elevator control board.

- Verify the voltage value supplying power to the arrows and the programmer board ‘XDP-2W’ , and check the integrity of the connection wires using a multimeter.

- If the preceding steps are executed and the issue persists, kindly reach out to our technical support team for assistance.

- Access the programmer board's ‘XDP-2W’ programming mode by pressing the ‘DU’ and ‘DT’ buttons simultaneously until an arrow appears on the indicator. Change the displayed numbers by pressing the ‘DU’ button to alter the unit digit on the indicator and pressing the ‘DT’ button to modify the tens digit on the indicator. Press the ‘STORE’ button to save the programming, and repeat this process for each floor until the board’s programming is adjusted.

- If the preceding steps are executed and the issue persists, kindly reach out to our technical support team for assistance.

- Access the programming mode and navigate to program < P3: LED Matrix > on the elevator control board. Use the (+) and (-) buttons to select the number to be displayed on the serial indicator for each floor. Press ENTER to save the changes. To exit the programming mode, press RESET.

- Check the connections of the serial indicator and its associated wiring in the elevator control panel and the shaft. Repair any damaged connections. Measure the supplied voltage to the indicator and the elevator control board, ensuring its stability. Connect the negative terminal of the current shunt ‘Bridge’ to the elevator control board’s ground ‘GND’.

- If the connections are correct and the wires are intact, test with another serial indicator to determine whether the issue lies with the indicator or the elevator control board. Bring the faulty component for maintenance at one of the company's service centers.

- If the preceding steps are executed and the issue persists, kindly reach out to our technical support team for assistance.

- Access the programming mode and navigate to program < P2: Display Mode > on the elevator control board. Use the (+) and (-) buttons to select the display type ‘7SEGMENT’. Press ENTER, and choose the number to be displayed on the seven-segment indicator for each floor. Press ENTER to save the changes. To exit the programming mode, press RESET.

- Check the signals of the indicator ‘A-H’ using a multimeter by measuring the voltage between the signal and the common terminal ‘CM+’. Ensure the integrity of the signals and the absence of any faulty signal, such as ‘No Output’ or ‘Continuous Output’. If any signal is found to be faulty, bring the indicator for maintenance to one of the company's service centers.

- If the signals on the indicator are confirmed to be intact, examine the connecting wires in the elevator control panel and ensure their integrity, with no short circuits. If any issues with the wires or damaged connections are identified, repair the damaged components and test the indicators.

- After confirming the elevator control panel’s wire integrity, review the connecting wires in the shaft and ensure there are no short circuits. Repair any damaged components.

- If the wires leading to the indicators in the shaft are confirmed to be intact, test with another indicator to verify the functionality or damage of the existing indicator on-site.

- If the preceding steps are executed and the issue persists, kindly reach out to our technical support team for assistance.