LiftMaster CSL24U CSL24U Installation Manual - Page 39

TROUBLESHOOTING DIAGNOSTIC CODES continued... 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 34 35 36 37 38 39 40 41 42 43 44 45 46 50 51 52 53 54 Meaning Solution Main control board has experienced an internal failure. Disconnect all power, wait 15 seconds, then reconnect power (reboot). If issue continues, replace main control board. Linear Drive Disengaged (Arm 1) Disengage then re-engage arm. Check wiring and connections. Linear Drive Disengaged (Arm 2) Absolute Position Encoder Error, not getting Check APE assembly and wiring connections. Replace the APE assembly if position information from encoder necessary. Max-Run-Time Exceeded Error Check for an obstruction, then reprogram the limits. Product ID Error 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. Product ID Failure Unplug product ID harness then plug back in. Disconnect all power, wait 15 seconds, then reconnect power before replacing product ID harness. Hard Stop Limit (Arm 1) Hard Stop Limit (Arm 2) 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). Battery overvoltage Too much voltage on the battery. Check harness. Make sure there is NOT a 24V battery on a 12V system. Battery overcurrent Possible short of the battery charge harness. Check harness. Make sure you do NOT have a 12V battery on a 24V system. No battery at boot up 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. Exit Loop Error Shadow Loop Error Interrupt Loop Error 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. Wireless edge battery low Replace batteries in wireless edge. Run-Distance Error Gate unbalance detected. Make sure the gate is installed on a level surface and not on an excessive grade. Pass-point not detected (Arm 1) Check yellow pass-point wiring. If limits are not accurate, reprogram. Pass-point not detected (Arm 2) Brownout occurred 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. Wireless Second Operator Communication Check the second operator for power. If OFF, restore power and try to run the Error system. If powered, deactivate the wireless feature and then reprogram the second operator. Saved NO YES YES YES YES YES NO YES YES YES YES YES YES NO YES YES 37