Garage Door Opener: Works intermittently

Radio interference from other devices—such as photoelectric sensors for security lights—can prevent the garage door opener from responding to the signal from the remote. The problem is often intermittent. To test, trigger the remote while standing close to the motor unit—if the door opens consistently from that close distance, interference is likely the problem. To solve the problem, identify the source of the radio interference and either move it or turn it off.

These repairs may help solve your Garage Door Opener problem:

Find and remove garage door opener RF interference source

Radio frequency tester

When the garage door opener works intermittently, the logic board may be experiencing radio frequency (RF) interference from nearby sources such as security lights, ham radios and some electronics. If the remote works only when held within a few feet of the motor unit, RF interference is probably the problem. Locate and eliminate the source of the RF interference. To determine the source, disconnect electrical power to suspected sources, one by one.

For manuals, repair guides, and specific part recommendations, enter your model number.

Repair or replace external garage door opener wiring

2-strand copper wire

External wiring connects the wall-mounted door control and the safety sensor to the motor unit of the garage door opener. That wiring can become damaged or disconnected. Check that wires are securely attached to the sensor's photoelectric eyes (each eye has 2 wires) and the wall unit. If any wire is cut, strip insulation from the end of the wire and reattach it. Check that wires are still attached to the terminals on the back of the motor unit. Replace or repair any frayed, pinched, or exposed wires.

For manuals, repair guides, and specific part recommendations, enter your model number.