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Recent LiftMaster SL3000UL8-related questions: Troubleshooting Liftmaster Sl3000ul8gate safety loop is on. will not reset.there is no obstrution.will not close unless you shut power o... Error Code 42. How To Clear.
My Lift Master 8550-267 door control display has an error code 42.Read out is: "EXCESSIVE OPENING FO... Error Code 15, Motor Control.
The belt will move 1/4 in then stops.Check he sensors etc. The up/down arrows keeps flashing on the ...