TROUBLESHOOTING
Problem Possible Cause / Solution
Opener is working properly but Replace LED cluster.
courtesy light does not turn on
Courtesy light does not turn off Replace logic board.
Opener hums as trolley hits the 1. Disconnect trolley by using the emergency release.
trolley stop
2. Close door manually.
3. Relieve Belt connector by loosening both,
refer to page 8.
(trolley should be kept disengaged).
5. Refer to page 17 to reset UP Limit.
6. Refer to page 8 to re-tighten chain-to-cable connector
until it is 1/4 inches (.64 cm) above the base of rail
(reference the figure shown on page 8).
7.
Repeat the abov
e steps if trolley still hits the stop bolt.
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