LiftMaster MJ MGJ User's Guide Manual - Page 8

TROUBLESHOOTING To locate a dealer in your area visit us online at www.liftmaster.com CONDITION POSSIBLE CAUSE OPERATOR WILL NOT RESPOND TO ANY COMMANDS No power Accessory failure Possible component failure OPERATOR MAKES Operator requires adjustment NOISE BUT DOOR DOES NOT MOVE DOOR DRIFTS AFTER OPERATOR STOPS Operator or door requires adjustment DOOR OPENS/CLOSES Operator requires adjustment TOO FAR DOOR REVERSES UNEXPECTEDLY Safety device activated RADIO FUNCTIONALITY NO RESPONSE REMOTE CANNOT BE PROGRAMMED POOR RANGE Remote control is not programmed Low battery Low battery Low battery Possible radio interference FIX ➤ Check circuit breaker. ➤ Verify photo eyes are aligned. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Verify photo eyes are aligned. If photo eyes are aligned and operator still does not operate properly, contact your installing dealer. ➤ See PROGRAMMING REMOTE CONTROLS section. ➤ Replace battery. ➤ Replace battery. ➤ Replace battery. ➤ Contact your installing dealer. MAINTENANCE SCHEDULE Every 3 months or 5,000 cycles repeat all tests in the Testing section. Call qualified service contractor for maintenance. To locate a dealer in your area visit us online at www.liftmaster.com. The operator should be serviced at the following intervals: • Every 3 months or 5,000 cycles • Every 6 months or 10,000 cycles • Every 12 months or 20,000 cycles WARNING To avoid SERIOUS PERSONAL INJURY or DEATH from CAUTION electrocution, disconnect ALL electric power BEFORE performing ANY maintenance. AVERTISSEMENT ATTENTION 8