Garage door starts to close then immediately reverses and opens fully, no error code shown

Safety first: Do not disable safety devices permanently. Work with power off when adjusting wiring.

Steps:

• Clean lenses: Gently clean the photocell lenses with a soft cloth to remove dust, cobwebs, or moisture.
• Check alignment: Observe the receiver LED; adjust the photocell position until the LED indicates a stable beam.
• Shield from sun: If direct sunlight hits the receiver, fit a small shade or reposition slightly to reduce glare.
• Inspect wiring: Tighten terminals and check for damaged cable between photocells and the control board.

After adjustment, test several open/close cycles to confirm consistent operation.