Troubleshooting; Maintenance Schedule - Chamberlain GH User Manual

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
Accessory failure
Possible component failure
OPERATOR MAKES
NOISE BUT DOOR
Operator requires adjustment
DOES NOT MOVE
DOOR DRIFTS AFTER Operator or door requires
OPERATOR STOPS adjustment
DOOR OPENS/
Operator requires adjustment
CLOSES TOO FAR
DOOR REVERSES
Entrapment protection device
UNEXPECTEDLY activated
RADIO FUNCTIONALITY
Remote control is not
NO RESPONSE
programmed
Low battery
REMOTE CANNOT BE
Low battery
PROGRAMMED
POOR RANGE
Low battery in remote
Possible radio interference

MAINTENANCE SCHEDULE

To avoid SERIOUS personal INJURY or DEATH:
• Disconnect electric power BEFORE performing ANY
adjustments or maintenance.
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
• Every 12 months or 20,000 cycles
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.
WARNING
WARNING WARNING
• ALL maintenance MUST be performed by a trained door
systems technician.
AVERTISSEMENT
AVERTISSEMENT
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