https://support.hysecurity.com/hc/en-us/articles/360042737093
If the previuos flow chart was unsuccessful in determining the issue the following steps can be used to determine the cause.
- With your multi-meter back probe into the top left and top right pins of the 9-pin square harness plug on the top left corner of the board while it is still plugged in. Set your multi-meter up to 200VDC unless it is auto ranging.
- Press reset to clear the FAL4. Once clear press the open or close button to move the gate.
- For the first 2 seconds as the display is flashing opening or closing watch the meter for voltage. If the board is working correctly, you should see 9-12VDC then Fault 4. If there is no voltage coming from the board it is likely damaged and will need to be replaced.
- If your board is outputting voltage, we need to follow that voltage to the motor. Unplug the single blue wire at the top inside corner of the upper DC power switch. Remove your meter lead from the blue wire it is back probed into and connect it to the exposed terminal on the inside of the dc power switch.
- Press reset to clear the FAL4. Once clear press the open or close button to move the gate.
- For the first 2 seconds as the display is flashing opening or closing watch the meter for voltage. If the DC switch is working correctly, you should see 9-12VDC then Fault 4. If there is no voltage coming from the DC switch it is likely damaged and will need to be replaced.
- If your DC switch is outputting voltage re connect the blue wire to the top inside of the DC power switch.
- Locate the motor for the operator and disconnect the wires connecting to the black and red wires coming from the motor. Remove your meter leads from the other connections and connect them to the wires that were previously connected to the motor.
- Press reset to clear the FAL4. Once clear press the open or close button to move the gate
- For the first 2 seconds as the display is flashing opening or closing watch the meter for voltage. If the board, DC switch and wiring are working correctly, you should see 9-12VDC then Fault 4. If there is no voltage coming from the wiring it is likely damaged and will need to be replaced.
- If you have followed the voltage all the way to the motor but the Fault 4 is still occurring with all of the connections secured the motor is likely damaged and will need to be replaced.