LiftMaster RSL12U RSL12U Troubleshooting Guide Manual - Page 14

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 "_ _". LIFTMASTER SYSTEM EXTERNAL ENTRAPMENT PROTECTION Code 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 Meaning System AC Overvoltage System AC Undervoltage Limit Error - Stuck Switch Symptom Operator will not function and show code 55. Operator will continue to run and show code 56. Operator will not run and show code 57. Limit Error - Wrong Switch Missing Power Board Operator will not run and show code 58. Operator will not run and show code 59. Minimum number of monitored entrapment protection devices (one) not installed. The operator will not run and the EYES EDGE LEDs will flash on the main board and expansion board. CLOSE EYE/INTERRUPT held The operator will only move with more than 3 minutes on main constant pressure and will beep while board moving CLOSE EDGE held more than 3 minutes on main board OPEN EYE/EDGE held more than 3 minutes on main board CLOSE EYE/INTERRUPT held The operator will only move with more than 3 minutes on constant pressure and will beep while expansion board moving CLOSE EYE/EDGE held more than 3 minutes on expansion board OPEN EYE/EDGE held more than 3 minutes on expansion board Wireless edge triggered more Gate will not move. than 3 minutes Wireless edge loss of monitoring Gate will not move. Wireless edge triggered Gate reverses to the opposite direction. Solution Check with the utility company. Check wiring and wire gauge to operator. Check switch for proper operation. Check harness for shorts. Replace if defective. Check motor wiring. Check harness for shorts. Check for presence of power board. Make sure there is a monitored entrapment protection device installed and connected to the operator. Check for alignment or obstruction. Check wired input on main control board. The photoelectric sensors may be installed too far apart. Check for alignment or obstruction. Check wired input on expansion board. The photoelectric sensors may be installed too far apart. Check wired input for wiring issue, obstruction or damaged edge. Check wireless edge inputs. Confirm the transmitter and receiver are installed at the recommended locations and within the range specified. Confirm the transmitter battery is operational and installed securely. Check the receiver to main control board wiring harness for damage and make sure the connector is fully seated. If an obstruction occurred, no action required. If an obstruction did NOT occur, check inputs and wiring. Saved YES YES YES YES YES NO YES YES YES YES NO 13