Chamberlain SL 1000-XI Installation & Operating Instructions Manual page 27

3. IF MAX RUN TIME LED IS TURNED ON ONLY
1. Limit cams do not engage the limit switches.
2. The belt or chain has been broken.
3. The belt slips during gate movement.
4. Limit switch cable is disconnected.
5. Bad limit switch.
6. Stalled motor.
4. IF OPEN MTR LED IS TURNED ON ONLY
1. The motor thermal overload switch is popped.
2. The wires connecting the motor to the Control Board are disconnected
3. Bad motor.
5. IF FAULT LED IS TURNED ON ONLY
1. A limit switch is stuck closed.
2. The belt was broken before the start of the gate movement.
3. Safety Bar switch is activated.
4. Stalled motor at open or close limit.
Rev C 24 of 36
Doc 6001194 (01-20259)