LiftMaster MJ MJ5011E Installation-2008 Manual - Page 22

TROUBLESHOOTING Technical Support 1-800-528-2806 CONDITION POSSIBLE CAUSE FIX OPERATOR WILL NOT RESPOND TO ANY COMMANDS A) No power ➤ Verify primary line voltage (120Vac,60Hz) is present at terminals L1 & L2. The LED will flash when power is present. B) Stop circuit not complete ➤ Verify Stop Button input (terminals 3 & 5) is properly wired and stop button is not stuck. C) Stuck button on 3-button control station ➤ Verify that all buttons are actuating freely and releasing properly. D) Interlock input activated ➤ Verify jumper is located at terminals 3 & 4 if interlock is not present. ➤ Verify interlock is properly wired and not activated. E) Motor overload tripped ➤ Overload is internal within motor. Allow to cool and retry. F) Accessory failure ➤ Attempt to close by holding the CLOSE button for more than 5 seconds. If door closes, check accessory for proper wiring, polarity, connections or damage. ➤ Verify safety eyes are aligned or safety edge is not activated. G) Possible component failure ➤ Call Technical Support for assistance. OPERATOR MAKES A) Clutch slipping NOISE BUT DOOR DOES NOT MOVE ➤ Adjust clutch, see ADJUSTMENT section. B) Brake not releasing (if present) ➤ Verify brake assembly operation and wiring. C) Door operation problem ➤ Disconnect trolley and check door for proper operation. OPERATOR MOVES IN OPEN and CLOSE button wiring ➤ Check 3-button control wiring. THE WRONG DIRECTION connection reversed DOOR DRIFTS AFTER OPERATOR STOPS A) Door not balanced properly ➤ Disconnect trolley assembly and check door for proper operation. B) Clutch slipping ➤ Adjust clutch, see ADJUSTMENT section. C) Brake not functioning properly ➤ Check brake mechanism to ensure brake lever is free and brake pads are engaging the brake disc. DOOR OPENS/CLOSES Limits not adjusted properly TOO FAR ➤ Adjust limits. See ADJUSTMENT section. DOOR REVERSES UNEXPECTEDLY Intermittent Safety Device activation ➤ Check all connections. TTC NOT FUNCTIONING A) Monitored Safety Devices ➤ Check all connections. Verify Photo eyes are not blocked and the sensing edge is not activated. B) TTC temporarily disabled ➤ Close and Open the door. TTC will be re-enabled. C) TTC not programmed properly ➤ Reprogram TTC. See PROGRAMMING TTC section. RADIO FUNCTIONALITY NOTE: Built in radio receiver compatible with all LiftMaster 315MHz remote control devices. NO RESPONSE REMOTE CANNOT BE LEARNED A) Remote control is not programmed ➤ See PROGRAMMING REMOTE CONTROLS section. B) Remote control not compatible ➤ Obtain qualified LiftMaster remote control device. C) Low battery ➤ Replace battery. A) Low battery ➤ Replace battery. B) Remote control not compatible ➤ Obtain qualified LiftMaster remote control device. POOR RADIO RANGE A) Low battery in remote B) Antenna not configured C) Ambient radio interference or building structural issue ➤ Replace battery. ➤ See SETUP RADIO ANTENNA. ➤ Use EXTERNAL ANTENNA kit (see ACCESSORIES page). 22