Garage door openers are designed to stop working if anything goes wrong. While this is a great safety feature, it can make some problems harder to solve. The good news is that aside from a breakdown, most garage door opener problems can be resolved with minor adjustments.
Most manufacturers recommend that you inspect your garage opener once every two months. Inspect the springs and mounting hardware for the door itself. Refer to your owner's manual for procedures to test the door balance and contact reverse. The contact reverse is a safety feature that lifts the door if it encounters an obstruction.
To troubleshoot your garage door opener look for the following: Garage door opener doesn't work from the wall control. Check the circuit breaker and wiring connections. Look for breaks in the wires-nails staples and other fasteners can cut insulation and short wiring. Garage door opener starts for no reason. Erase and reprogram the remote control memory. Check to see if the wall control buttons are sticking. Check all wiring for shorts. Garage door starts down, then stops and goes back up. Check to see if the safety LED system is blocked or misaligned. Try adjusting the Close Force setting per the owner's manual. Garage door opener will close, but not open. Check the wiring on the Open Limit switch. Try adjusting the Open Force setting per the owner's manual. Garage door opener will open, but not close. Check to see if the safety LED system is blocked or misaligned. Check the wiring on the Close Limit switch. Try adjusting the Close Force setting per the owner's manual. Garage door starts up but stops before it's completely open. Make sure the door, springs and garage door opener are all lubricated and in working order. Check the wiring on the Open Limit switch. Try adjusting the Open Force setting per the owner's manual. Garage door opener runs, but door doesn't open. Check to make sure the carriage hasn't been disconnected from the drive. Check Open and Close Force settings per the owner's manual. Remote control only works at short range. Replace the battery. Try placing the remote in another position in the car. Reposition garage door opener's antenna. Most likely its a receiver problem and not the remote, as the signal might get blocked or the receiver goes bad and needs to be replaced.