If your garage door remote closes the door but won't open it, several causes related to remote signal, opener settings, and safety sensors could be responsible, as closing and opening use same remote but opener logic may have issues. First, check if wall switch opens door, as if wall switch also fails to open but closes, problem is likely opener logic board or travel limits, not remote. If wall switch opens but remote only closes, remote may have partial failure where close button works but open button contact is worn, so try reprogramming remote by pressing learn button on opener and pressing remote button. Check opener travel limits, as if open limit is set incorrectly, door may think it is already open and not respond to open command, requiring adjustment of limit screws on opener unit. Safety sensors that prevent closing when obstructed do not prevent opening, but if sensors are misaligned, opener may behave erratically. Check for locked mode, as some openers have vacation lock on wall console that disables remote opening but allows closing, so check if lock button is engaged and unlock. Battery in remote may be weak, causing intermittent signal that works for close but not open due to distance, so replace battery. Also check for radio frequency interference from LED bulbs in opener that can block open signal, and ensure antenna wire on opener hangs down. If remote is old, replacement remote costing 30 to 50 dollars may solve issue.
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