LiftMaster LA400DC LA400DC Owner's Manual - Page 38

TROUBLESHOOTING ERROR CODES continued... Some errors are saved in the error code history and some are not. If an error is not saved it will briefly appear on the error code display as it occurs, then disappear. Code Error 67 68 69 Meaning Wireless edge triggered more than 3 minutes Wireless edge loss of monitoring Wireless edge triggered CLOSE EYE/INTERRUPT triggered, causing 70 reversal, preventing close, or resetting TTC (main board) 71 CLOSE EDGE triggered, causing reversal, preventing close, or cancelling TTC (main board) 72 OPEN EYE/EDGE triggered, causing reversal or preventing opening (main board) CLOSE EYE/INTERRUPT triggered, causing 73 reversal, preventing close, or resetting TTC (expansion board) 80 Close input (EYE/EDGE) communication fault (secondary control box) 81 Open input (EYE/EDGE) communication fault (secondary control box) Force reversal (Arm 1) 91 Force reversal (Arm 2) 92 RPM / STALL Reversal (Arm 1) 93 RPM / STALL Reversal (Arm 2) 94 99 Normal Operation Solution Check wired input for wiring issue or obstruction. Check wireless edge inputs. IF an obstruction occurred, no action required. If an obstruction did NOT occur, check inputs and wiring. IF an obstruction occurred, no action required. If an obstruction did NOT occur, check alignment, inputs, and wiring. IF an obstruction occurred, no action required. If an obstruction did NOT occur, check alignment, inputs, and wiring. IF an obstruction occurred, no action required. If an obstruction did NOT occur, check alignment, inputs, and wiring. IF an obstruction occurred, no action required. If an obstruction did NOT occur, check alignment, inputs, and wiring. Check the connections between the main board and the secondary operator Check the connections between the main board and the secondary operator. Check for obstruction. If no obstruction, check that the operator arm is engaged and free to move. Refer to Limit and Force Adjustment section, and Obstruction Test. Check for obstruction. If no obstruction, check that the operator arm is engaged and free to move. Refer to Limit and Force Adjustment section, and Obstruction Test. Check for obstruction. If no obstruction, check the operator cable wiring and that the operator arm is engaged and free to move. Replace the operator arm if necessary. Check for obstruction. If no obstruction, check the operator cable wiring and that the operator arm is engaged and free to move. Replace the operator arm if necessary. No action required Saved YES YES NO NO NO NO NO YES YES YES YES YES YES YES 36