So your LiftMaster garage door opener has the error code 4-6? We can help you self-diagnose why your garage door opener is giving you the 4-6 error code and what to do about it.
Understanding LiftMaster Error Codes
The “up” and “down” arrows on your LiftMaster will determine what error code your garage door
opener is experiencing. This is done though particular light patterns to specify what the problem is. For
the LiftMaster 4-6 error code, the “up” button will flash 4 times and the “down” button will flash 6
times. This error code usually happens when you try to close your garage door.
The LiftMaster Error Code 4-6 is related to your safety sensors. With this error code, your garage door
will not work properly. Garage door safely sensors are required by the law for the safety of consumers,
so when there is something wrong with your sensors, your garage door system will stop working.
There must be two garage door safety sensors on either side of your garage door, if there is not, the
garage door opener will have 4-6 error code.
Possible Causes for the Error Code 4-6
Blocked Sensor
Most commonly for a regularly functioning garage door, it will have this error code if there is dirt or
debris on your garage door sensors. Try cleaning your sensors with a damp paper towel. Also, it can be
an object in the path of the sensor, which can prevent the door from closing.
Misaligned Sensors
If the sensors are misaligned, the door will not close. Check the receiving sensor for a solid green light,
this ensures that your garage door sensors are correctly aligned.
Incorrectly Installed Sensors
The installation of safety sensors is crucial. If sensors are not installed correctly, installed on the wrong
side, or not installed at all, then the garage door opener will not function. Check the sensor wires for
damage or splitting and ensure that the black and white wires are correctly connected to the
corresponding color.
If you still have not found the solution to your error code, then it is time for the professionals to take
over. Give us a call at A1 Affordable Garage Door Repair to schedule an appointment today. We provide Garage door repairs to Frisco, Mckinney, The Colony, Allen, Melissa and surrounding areas.
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