Find error codes for your Craftsman garage door opener at Sears PartsDirect.. Craftsman garage door openers flash the LED next to the Learn button to. 1 flash. Condition. Sensors are completely misaligned or sensor wires are broken. 2 flashes. Condition. Safety reversing sensor wires are shorted or the safety .
Diagnostic Chart: 1 or 2 flashes – One or both of the LEDs on the safety reversing sensors. 5 flashes – This is a miscellaneous code.. If the garage door opener still does not operate it may be the logic board or a short in the door control wires.