| The door feels very heavy |
Broken or weakened spring, cable problem, balance issue, or mechanical resistance. |
Stop using the opener and arrange a full lift-system assessment. |
| The door opens crooked |
Cable, spring, drum, roller, hinge, bracket, or track-alignment problem. |
Avoid forcing the door because uneven movement can damage panels and tracks. |
| The opener hums or strains |
Heavy door, poor balance, worn opener parts, trolley problem, or resistance in the door system. |
Have the door balance and mechanical movement checked before replacing the opener. |
| The door reverses before closing |
Sensor alignment, obstruction, travel setting, track resistance, seal drag, or uneven floor contact. |
Check for visible obstructions, then request opener and safety-system troubleshooting. |
| The door scrapes, shakes, or grinds |
Worn rollers, loose hinges, track movement, alignment problems, or opener strain. |
Book service before repeated movement causes more extensive hardware or panel damage. |
| Water or daylight appears under the door |
Bottom-seal wear, side gaps, uneven concrete, poor door fit, or closing-position trouble. |
Request a seal, alignment, and floor-contact review. |
| The remote works only occasionally |
Battery, programming, receiver, interference, antenna, keypad, or opener-control issue. |
Record whether the wall control still works and whether the problem affects every remote. |