It is a magnetic sensor. Positioned next to a magnet that will rotate at the same time as the motor axis, it will pick up the magnetic field emitted by this magnet and transcribe it as an electrical signal to the card.

Thus, the latter knows whether or not the engine rotates, at what speed, and where it is the portal of its race.

Hall effect cards are positioned at the top of electric motors. They are wired with 3 white wires, or 3 black wires.

The Hall effect card plug connects with 3 wires.

• A positive (+12V)
• A negative (GND)
• A signal output (HALL)

To identify the positive:

• On the version with black threads, it is the only thread with white marks on it.
• On the version with white threads, it is the thread with the cross marks.

The medium wire is the negative (GND).

The son opposite to the positive is the HALL.

It is therefore necessary to cross the HALL and the GND for connecting to the map.

As indicated in the introduction, this element makes it possible to indicate to the electronic card whether or not the engine is running. In case of a defect of the Hall effect card, the electronic card will react as if the engine was not running and will indicate corresponding errors.

Typically, in self-learning, you will have the error message L3 after a brief round trip of the engine (the engine has reached its opening stop in less than 3s).

Before validating this defect, make sure that the magnet positioned next door is integral with the engine shaft and rotates well at the same time as it.

Also check that all red lights on the card turn on after a short press the SET key.

Sometimes it can run short-circuit and block the electrical start of the card.

If you notice that your electronic card no longer has lights on or if they are lit weakly, disconnect the engine terminal from the card, and see if it restarts well.

Check above all that each cable is in contact in the terminal block locations, and that the wires are tight by the jaws of the locations.