LiftMaster LA412UL Installation Manual - Page 38

TROUBLESHOOTING Diagnostic Codes Table Some codes are saved in the code history and some are not. If a code is not saved it will briefly appear on the display as it occurs, then disappear. LiftMaster System Installed System Informational External Entrapment Protection Inherent Entrapment Protection Code 31 32 33 35 36 37 38 39 40 41 42 43 44 45 46 51 52 53 54 60 61 62 63 64 65 66 67 68 Meaning Main control board has experienced an internal failure. Linear Drive Disengaged (Arm 1) Linear Drive Disengaged (Arm 2) Max-Run-Time Exceeded Error Product ID Error Product ID Failure Hard Stop Limit (Arm 1) Hard Stop Limit (Arm 2) Battery overvoltage Battery overcurrent No battery at boot up Exit Loop Error Shadow Loop Error Interrupt Loop Error Wireless edge battery low Pass-point not detected (Arm 1) Pass-point not detected (Arm 2) Brownout occurred Wireless Second Operator Communication Error Minimum number of monitored entrapment protection devices not installed. CLOSE EYE/INTERRUPT held more than 3 minutes CLOSE EDGE held more than 3 minutes OPEN EYE/EDGE held more than 3 minutes CLOSE EYE/INTERRUPT held more than 3 minutes CLOSE EYE/EDGE held more than 3 minutes OPEN EYE/EDGE held more than 3 minutes Wireless edge triggered more than 3 minutes Wireless edge loss of monitoring Solution Disconnect all power, wait 15 seconds, then reconnect power (reboot). If issue continues, replace main control board. Disengage then re-engage arm. Check wiring and connections. Check for an obstruction, then reprogram the limits. Was the control board just replaced? If so, erase limits, enter limit setup mode and set limits. If not, disconnect all power, wait 15 seconds, then reconnect power before changing product ID harness. Unplug product ID harness then plug back in. Disconnect all power, wait 15 seconds, then reconnect power before replacing product ID harness. Limit may be set too tightly against a non-resilient hard stop (re-adjust limit). Operator may be at end of travel (re-adjust mounting). Too much voltage on the battery. Check harness. Make sure there is NOT a 24V battery on a 12V system. Possible short of the battery charge harness. Check harness. Make sure you do NOT have a 12V battery on a 24V system. Check battery connections and installation. Replace batteries if depleted to less than 20V on a 24V system or less than 10V on a 12V system. Make sure there is NOT a single 12V battery on a 24V system. Failure or missing loop (SHORT or OPEN - LiftMaster Plug-in Loop Detector only) Check loop wiring throughout connection. May be a short in the loop, or an open connection in the loop. Replace batteries in wireless edge. Check yellow pass-point wiring. If limits are not accurate, reprogram. AC/DC board supply dipped below allowable level. Review power supply and wiring. If rebooting, ensure enough time for discharge of power to force a fresh boot. Check the second operator for power. If OFF, restore power and try to run the system. If powered, deactivate the wireless feature and then re-learn the second operator. Review monitored entrapment protection device connections. This swing gate operator will operate only after installation of a minimum of one external safety device in either the open or close direction. Check wired input on main control board; check for alignment or obstruction. Check wired input on expansion board; check for alignment or obstruction. Check wired input for wiring issue or obstruction. Check wireless edge inputs. Saved NO YES YES YES YES NO YES YES YES YES YES NO YES YES NO YES YES YES YES 38