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Error Code
A7 is about the louvre rather than the cooling. The swing flap motor moves the horizontal blade that directs air, and the board expects it to reach certain positions. When it cannot, the unit reports A7. The system can usually still cool or heat, which is why people ignore it, but a flap stuck in one position keeps the room uneven and can lead to condensation issues.
The swing motor is a small stepper unit with plastic gears. Those gears strip, the motor seizes, or the feedback contact wears out, and the board loses track of where the flap is. It is a cheap part and a common failure on units that have run the swing function constantly for years. Replacing it restores both the movement and the code.
A flap that has been knocked, has something trapped behind it, or has cracked at the pivot will not travel its full range. The motor then stalls against the obstruction and the board reports A7. Move the flap by hand with the power off, because a mechanical bind is easy to feel and easy to fix.
The swing motor plugs into the indoor board through a small connector, and that plug can work loose or corrode. A flap that sometimes moves and sometimes does not is the classic sign of a loose connector rather than a dead motor. Reseating the plug is a two minute check that should come before any part is ordered.
A motor stalling against a stiff flap or a dry pivot draws more current than it should and heats up. Repeated stalling eventually damages the winding. If the flap is stiff by hand and the motor is warm, freeing the pivot and checking the motor is the right order, rather than replacing the motor and leaving the cause in place.
The flap is moved through its range by hand with the power off. It should travel smoothly from stop to stop with no grinding and no tight spot. Anything caught behind it is removed and a cracked pivot is noted. This one check separates a mechanical problem from an electrical one.
The swing motor connector at the indoor board is unplugged, inspected for corrosion and reseated. The harness is traced for pinches behind the louvre assembly. On a unit where the flap moves intermittently, this is usually where the fault is found, and it costs nothing to check.
If the flap moves freely and the wiring is sound, the motor itself is tested or simply swapped. These are inexpensive parts and the test is quicker than the diagnosis. Once fitted, the flap is cycled through its full range to confirm the board is tracking it before the unit goes back into service.
