Troubleshooting - Chamberlain MGJ User Manual

CONDITION POSSIBLE CAUSE
OPERATOR WILL NOT
No power
RESPOND TO ANY
COMMANDS
Accessory failure
Possible component failure
OPERATOR MAKES
Operator requires adjustment
NOISE BUT DOOR DOES
NOT MOVE
DOOR DRIFTS AFTER Operator or door requires
OPERATOR STOPS
adjustment
DOOR OPENS/CLOSES
Operator requires adjustment
TOO FAR
DOOR REVERSES Safety device activated
UNEXPECTEDLY
RADIO FUNCTIONALITY
NO RESPONSE Remote control is not
programmed
Low battery
REMOTE CANNOT BE
Low battery
PROGRAMMED
POOR RANGE Low battery
Possible radio interference
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
T R O U B L E S H O O T I N G
To locate a dealer in your area visit us online at www.liftmaster.com
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.
M A I N T E N A N C E S C H E D U L E
WARNING WARNING
To avoid SERIOUS PERSONAL INJURY or DEATH from
electrocution, disconnect ALL electric power BEFORE performing
CAUTION
ANY maintenance.
AVERTISSEMENT
ATTENTION
8