LiftMaster opener will not close from remote; UP arrow LED blinks twice repeatedly.

Safety: Disconnect power before handling wiring at the opener terminals.

• Check sensor LEDs: If one or both sensor LEDs are off, suspect wiring.
• Inspect wiring path: Follow the sensor wires from each sensor back to the opener. Look for breaks, chew marks (rodents), or crushed sections under staples.
• Verify connections: At the opener, ensure the white wires are on the correct terminal (usually white) and the white/black or solid-colored wires are on the sensor terminal (usually black).
• Repair or replace wire: Cut out damaged sections and use low-voltage wire of similar gauge to splice, or run new wire from sensors to opener.
• Test sensors: Restore power and confirm both sensor LEDs are solid before testing door operation.