Garage Door Won’t Close When the Sun Is Hitting the Sensors? Here’s a Simple DIY Fix
Table of Contents
If your garage door works normally most of the day but suddenly will not close when the sun is directly in front of it, the issue may be the garage door safety sensors.
In some cases, bright sunlight can interfere with the photo eye and make the opener think something is blocking the door.
Chamberlain says direct sunlight can interfere with safety sensors and prevent the door from closing.
The good news is that this is often a simple problem to diagnose, and in some cases, homeowners can fix it themselves with a garage door sensor sun shield.
Why Sunlight Affects Garage Door Sensors
Garage door openers use photo eye sensors near the bottom of the door tracks. These sensors create a safety beam across the opening.
If the beam is blocked, the opener will stop the door from closing.
When strong sunlight shines directly into one of the sensors, it can sometimes overwhelm the sensor and interrupt the beam.
That can cause the door to refuse to close even though nothing is actually in the doorway. Chamberlain identifies direct sunlight as a possible cause of sensor interference.
Common Signs This Is the Problem
You may be dealing with sun interference if:
- The garage door opens normally
- The garage door will not close during certain times of day
- The problem happens mostly when the sun is low and directly facing the garage
- The door closes once the sun moves
- The door closes when you temporarily shade the sensor
A Simple DIY Test
Before buying anything, do a quick test.
Wait until the problem is happening, then place your hand, a piece of cardboard, or another object beside the sensor to create shade over the side facing the sun. Then try closing the garage door again.
If the door closes once the sensor is shaded, sunlight is likely the issue.
The Amazon listing for the sensor shield specifically recommends testing the sensor this way before installing the product.
DIY Fix: Install a Garage Door Sensor Sun Shield
if the shade test works, the next step is to install a garage door sensor sun shield. These small covers are designed to block direct sunlight from shining into the photo eye, which can help stop false sensor interruptions and allow the door to close normally again.
Chamberlain sells its own Safety Sensor Sun-blocker Kit for this exact issue and says it is used to shield sunlight and prevent accidental reversal when sunlight shines directly into the safety reversing sensors.
You can also find aftermarket sun shields on Amazon in different styles and for different sensor shapes, including model-specific options for some Chamberlain, LiftMaster, and Genie sensors.
Because these products are not universal, always check your sensor model and compare the product photos before ordering.
Amazon results for this product category show that compatibility varies by brand and model.
Basic installation steps
- Confirm the problem is sunlight by temporarily shading the sensor and testing the door.
- Identify which sensor gets direct sun.
- Loosen the wing nut or fastener on the sensor bracket.
- Install the shield over or around the sensor, depending on the product design.
- Tighten the bracket again.
- Test the garage door during the same time of day when the problem usually happens.
Many of the product listings in this category describe this as a quick install with no major modification, but the exact method depends on the shield design and your sensor model.
Before you buy
Not every “sun shield” fits every opener sensor.
Some options are made for specific Chamberlain or LiftMaster photo eyes, while others are marketed for other brands such as Genie.
Chamberlain also advises checking your opener manual for compatibility before ordering replacement parts.
