LiftMaster T GT- Logic 4 User Manual - Page 9

TROUBLESHOOTING To locate a dealer in your area visit us online at www.liftmaster.com CONDITION POSSIBLE CAUSE OPERATOR WILL NOT RESPOND TO ANY No power COMMANDS OPERATOR MAKES NOISE BUT DOOR DOES NOT MOVE DOOR DRIFTS AFTER OPERATOR STOPS DOOR OPENS/ CLOSES TOO FAR Accessory failure Possible component failure Operator requires adjustment Operator or door requires adjustment Operator requires adjustment DOOR REVERSES UNEXPECTEDLY Entrapment protection device activated RADIO FUNCTIONALITY NO RESPONSE REMOTE CANNOT BE PROGRAMMED POOR RANGE Remote control is not programmed Low battery Low battery Low battery in remote Possible radio interference FIX ➤ Check circuit breaker. ➤ Verify photoelectric sensors are aligned. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Contact your installing dealer. ➤ Verify photoelectric sensors are aligned. If photoelectric sensors 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. NG MAINTENANCE SCHEDULE WARNING N WARNING To avoid SERIOUS personal INJURY or DEATH: • Disconnect electric power BEFORE performing ANY adjustments or maintenance. • ALL maintenance MUST be performed by a trained door systems technician. Every 3 months or 5,000 cycles repeat all tests in the Testing section. Call a trained door systems technician. 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 EMENT• Every 12 months or 20,000 cycles AVERTISSEMENT ON AVERTISSEMENT 9