Limited Range of Remote Controls: Troubleshooting Steps
Step 1: Change remote batteries.
Weak batteries can reduce the range of a remote control drastically.
Step 2: Make sure no other receivers are connected to your motor.
If there are other wires running to an external or internal receiver from the same screws your new receiver is hooked to, this will limit the range the new receiver can emit.
Step 3: Unplug other devices in your garage one at a time and test range.
Unplug other devices in your garage one at a time and test range. Certain electrical devices can cause interference; this could be almost anything that is plugged into an electrical outlet.
Step 4: Check interference from other Garage Door Motors.
If you have two garage door motors they can conflict with each other.Start by unplugging the other unit you are not having trouble with. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged. It is emitting a signal that is over powering the other garage door opener.
Step 5: Power Down test.
To isolate potential sources of interference, turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room. If the range improves, then the interference is coming from a device in the garage. If no improvement is seen follow the same procedure, this time turning off the circuit breakers to your home, with the exception of the garage, and test the remote controls. If improvement is noted, turn the circuit breakers back on, one by one, until the range problem resurfaces. This will allow you to narrow down what room the problem device is in. You will have to go from there to isolate it further, by unplugging and re-plugging the items in that room.
If you are unable to determine any source of interference, then the receiver logic board on the garage door motor may need to be replaced.