Simple Diagnostic checks for Service Engineer.
1) Check Surrounds for any obstructions
2) Check 240V Mains, Emergency Override and all fuses on control panel
3) Operate Barrier Manually for any Resistance.
4) Check all Mechanical points to ensure secure
5) Check all connections on panel
6) Test all Panel Low Voltages outputs for 12/24 Volts
7) Check for any warning LED’s or screen display warnings

Check if any access is working, not stuck on, or is faulty.
9) Test photocell connections, check power supply, voltages, obstructions. Clean photocells and covers.
10) Test ground loop resistance with a mega, check loop detector if any faults lights displayed. Check DIP switches, Reset if possible. Check power supply.
11) Test and ensure if any timers are installed on the barrier given a hold/ stop command.
12) If possible, remove access control and safety connections and using a jump wire test between common and open. If barrier raises, input one of the access/safety features until fault occurs.
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