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9
TROUBLESHOOTING
MAINTENANCE SCHEDULE
To avoid SERIOUS personal INJURY or DEATH from
electrocution, disconnect ALL electric power BEFORE performing
ANY maintenance.
CONDITION POSSIBLE CAUSE FIX
OPERATOR WILL NOT
RESPOND TO ANY
COMMANDS
No power ➤ Check circuit breaker.
Accessory failure ➤ Verify photoelectric sensors are aligned.
Possible component failure ➤ Contact your installing dealer.
OPERATOR MAKES
NOISE BUT DOOR
DOES NOT MOVE
Operator requires adjustment ➤ Contact your installing dealer.
DOOR DRIFTS AFTER
OPERATOR STOPS
Operator or door requires
adjustment
➤ Contact your installing dealer.
DOOR OPENS/CLOSES
TOO FAR
Operator requires adjustment ➤ Contact your installing dealer.
DOOR REVERSES
UNEXPECTEDLY
Entrapment protection device
activated
➤ Verify photoelectric sensors are aligned. If photoelectric sensors are
aligned and operator still does not operate properly, contact your
installing dealer.
RADIO FUNCTIONALITY
NO RESPONSE
Remote control is not
programmed
➤ See PROGRAMMING REMOTE CONTROLS section.
Low battery ➤ Replace battery.
REMOTE CANNOT BE
PROGRAMMED
Low battery ➤ Replace battery.
POOR RANGE
Low battery in remote ➤ Replace battery.
Possible radio interference ➤ Contact your installing dealer.
To locate a dealer in your area visit us online at www.liftmaster.com.
Every 3 months or 5,000 cycles repeat all tests in the Testing section.
Call qualifi ed 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
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