LiftMaster HDSL24UL Installation Manual - English - Page 42

TROUBLESHOOTING Troubleshooting Chart SYMPTOM Operator does not run and diagnostic display not on. Control board powers up, but motor does not run. Gate moves, but cannot set correct limits. POSSIBLE CAUSES a. No power to control board b. Open fuse c. If on battery power only, low or dead batteries d. Inoperable control board e. Inoperable power board a. Reset switch is in the RESET position b. Jumper is not in place for stop circuit c. If on battery power only, low or dead batteries d. Open or close input active e. Entrapment protection device active f. Vehicle loop detector or probe active g. Inoperable control board h. Inoperable motor or motor control module a. Gate does not move to a limit position b. Gate is too difficult to move c. Limits are set too close Gate does not fully open or fully close when setting limits. Operator does not respond to a wired control/command (example: open, close, SBC, etc.) Operator does not respond to a wireless control or transmitter a. Gate does not move to a limit position b. Gate is too difficult to move a. Check open and close command input LEDs b. Reset switch is in the RESET position c. If on battery power only, low or dead batteries d. Entrapment protection device active e. Vehicle loop detector or vehicle probe active a. Check XMITTER LED when wireless control is active b. Reset switch is in the off position c. Poor radio reception Gate stops during travel and reverses immediately. a. Control (open, close) becoming active b. Vehicle loop detector active c. Low battery voltage d. Inherent entrapment protection was activated while moving SOLUTIONS a. Check AC and battery power b. Check fuses on the power board c. Charge batteries by AC or solar power or replace batteries d. Replace inoperable control board e. Replace power board a. Set reset switch to NORMAL OPERATION b. Put a jumper on the stop circuit c. Charges batteries by AC or solar power or replace batteries d. Check all open and close inputs for a "stuck on" input e. Check all entrapment protection device inputs for a "stuck on" sensor f. Check all vehicle detector inputs for a "stuck on" detector g. Replace inoperable control board h. Replace motor or motor control module a. Use manual disconnect, manually move gate, and ensure gate moves easily limit to limit. Repair gate as needed. b. Gate must move easily and freely through its entire range, limit to limit. Repair gate as needed. c. Ensure the gate moves at least four feet between the OPEN limit and the CLOSE limit. a. Use manual disconnect, manually move gate, and ensure gate moves easily limit to limit. Repair gate as needed. b. Gate must move easily and freely through its entire range, limit to limit. Repair gate as needed. a. Check all open and close inputs for a "stuck on" input b. Set reset switch to NORMAL OPERATION, see page 31 c. Charges batteries by AC or solar power or replace batteries d. Check all entrapment protection device inputs for a "stuck on" sensor e. Check all vehicle detector inputs for a "stuck on" detector a. Activate wireless control and check XMITTER LED is on. Re-learn wireless control/transmitter to control board. Replace wireless control as needed. b. Set reset switch to NORMAL OPERATION, see page 31 c. Check if similar wired control operates correctly. Check if wireless controls works properly when within a few feet of operator. Check operator's antenna and antenna wire. Check other wireless controls or devices. a. Check all open and close inputs for an active input b. Check all vehicle detector inputs for an active detector c. Battery voltage must be 23 Vdc or higher. Charge batteries by AC or solar power or replace batteries d. If there are no obstructions in gate path, manually disconnect the gate, and ensure it moves easily limit to limit. Repair gate as needed. 42