LiftMaster LA100 LA100 Linear Gate Operator Manual - Page 28

Troubleshooting HAVING A PROBLEM? Symptom: Operator will not run or respond to any programming. • Power supply not plugged into outlet or outlet without power. Check circuit breaker. • Issue with wiring from power supply to the gate controller. Check connections at the power supply terminals and the control board. To verify if power supply is supplying appropriate power, check for 24Vac at the terminals on the power supply marked COM and 24Vac with a volt meter. Also, check for 24Vac at the end of the two wires leading from the transformer to the control board to verify wires are good. Symptom: Operator will not respond to a remote control. • If the remote control battery is good, the YELLOW LED on the control board will blink rapidly when the remote control button is pressed. If not, replace battery. • Remote control provided with operator is programmed from the factory. If the LED blinks rapidly when pushing on the remote control button and the operator does not respond, try reprogramming the remote control. Symptom: Relays on control board 'click' when remote control command is given but the operator does not move. • Motor cable wiring from the operator to the control board not connected correctly or loose. Check connections. Symptom: Gate stops and reverses. • A fault has occurred. Check gate path for obstructions. Check operation of gate manually to verify smooth operation. Adjust force setting (see PROGRAMMING FORCE LEARN). Symptom: Gate opens but will not close. • Safety Sensors are blocked or misaligned. Symptom: Gate does not close automatically with TTC enabled. • Operator has lost power. • Gate opened by a forced reversal. • Safety sensors are blocked or misaligned. • Party mode has been enabled. Symptom: Alarm is sounding continuously. • This indicates that the gate has had two consecutive Gate Force obstructions and the control system requires to be reset for continued operation. Check to ensure the gate path is clear. To clear the alarm condition and restore normal operation, push and release the RESET BUTTON on the outside of the control box. FAULT CODE PROBLEM CLEARED 1 Blink Safety Sensors Disconnected. A loud beep will Check all low voltage wiring from sensors for breakage or poor be heard when a run command is given. connections. 2 Blinks Safety sensors connected wrong Check for proper connections of (Red / +) and (Black / -) wires at the control board. Polarity must to be maintained. 3 Blinks Single button input "SWITCH" is shorted. Check for shorted wires or stuck button on switch accessory. 4 Blinks Safety Sensors are misaligned or blocked. A loud beep will be heard when a run command is given. Check sensors path for obstruction or misalignment. When sensors are properly aligned both indicator LED's on the sensors will be lit. 7 Blinks Control board issue. Replace control board. 9 Blinks Gate operator position sensor error Check gate operator cable connections at the control board. 10 Blinks 11 Blinks 12 Blinks 13 Blinks 15 Blinks Control board issue. Replace control board. Force reversal while closing. Maximum safe Check gate path for obstruction. Verify operator cable connections gate force was exceeded. at the control board. Force reversal while closing. Normal gate force Check for obstructions or excessive gate resistance. Relearn gate was exceeded. force (press PURPLE BUTTON 2 times then cycle gate). Force reversal while opening. Normal gate force was exceeded. Power on reset Control board issue. Replace control board. Operation and Maintenance 28