LiftMaster RSL12U RSL12U Troubleshooting Guide Manual - Page 15

DIAGNOSTIC CODES Some codes are saved in the code history and some are not. If a code is not saved it will briefly appear on the display as it occurs, then disappear. When servicing of the operator is complete, erase the code history by pressing the STOP button until the display flashes "Er" then "CL" (about 6 seconds). When the codes have been erased the display will show "_ _". EXTERNAL ENTRAPMENT PROTECTION Code 70 71 72 73 74 75 80 81 82 83 Meaning Symptom Solution CLOSE EYE/INTERRUPT triggered on the main board During the close cycle the gate will stop and reverse to the full open position and the Timer-to-Close becomes disengaged. The gate will not close. Check for an obstruction in the path of the gate. If an obstruction did NOT occur, check the inputs and wiring on the main control board. CLOSE EDGE triggered on the main board During the close cycle the gate will stop and reverse to the full open position and the Timer-to-Close becomes disengaged. The gate will not close. OPEN EYE/EDGE triggered on the During the open cycle the gate will main board reverse for 4 seconds, then stop. The gate will not open. CLOSE EYE/INTERRUPT triggered on the expansion board During the close cycle the gate will stop and reverse to the full open position and the Timer-to-Close becomes disengaged. The gate will not close. Check for an obstruction in the path of the gate. If an obstruction did NOT occur, check inputs and wiring on the expansion board. CLOSE EYE/EDGE triggered on the expansion board During the close cycle the gate will stop and reverse to the full open position and the Timer-to-Close becomes disengaged. The gate will not close. OPEN EYE/EDGE triggered on the During the open cycle the gate will expansion board reverse for 4 seconds, then stop. The gate will not open. Close input (EYE/EDGE) communication error between primary and secondary operators Open input (EYE/EDGE) communication error between primary and secondary operators The gate will not move except with constant pressure. Check inputs and communication method between operators, either wired or wireless. Ensure both operators have power. Erase the wireless communication and reprogram the two operators. Close input (EYE/EDGE) The expansion board LEDs are off communication error between and the gate will not move. main control board and expansion board Check the connections between the main board and the expansion board. Open input (EYE/EDGE) communication error between main control board and expansion board Saved NO NO YES YES 14