Garage Door Opens but Won't Close

A closing problem is a useful clue

A garage door that opens normally but reverses or refuses to close may have a safety-sensor issue. An obstruction, damaged wire or misalignment can interrupt the beam across the opening. Other door and opener faults can create similar behavior, so the symptom starts the diagnosis rather than proving a part is bad.

Look for a simple obstruction safely

Keep out of the door's path and look for objects across the opening, such as a bin, stored equipment or debris. Note whether the sensor lenses look dirty and whether their indicator lights are steady, blinking or off. Do not disable the sensors, bridge the wires or tape a sensor in a position that defeats its purpose.

Use the model's diagnostic information

The meaning of a flash pattern depends on the opener. Some Chamberlain and LiftMaster models use combinations of up and down arrow flashes; other units use different indicators. Record the pattern and the model label if visible safely. Do not apply a code chart from an unrelated opener.

Explain intermittent patterns

Tell the provider if the problem happens at one time of day, after the track was bumped, after a wire was disturbed or only with one control. Also mention whether the door closes partway before reversing or never begins moving. These details help distinguish a beam problem from binding, travel or control issues.

Confirm the repair and the final checks

Ask which sensors, brackets, wiring or opener settings need work and how normal closing and reversal operation will be checked afterward. If the door is crooked, a cable is loose or a spring is broken, stop using it and explain that before the visit.

Call about Columbus-area closing problems

Read garage door sensor repair for the service questions, or opener repair if the opener has additional symptoms. Call (877) 325-9889 with your ZIP code. Confirm appointment availability and all charges before booking.

Source: [Chamberlain Group diagnostic guidance](https://support.chamberlaingroup.com/s/article/Garage-Door-Opener-Diagnostic-Codes). Follow the safety instructions for your specific opener.