F.A.Q

• Check that the power cable is correctly connected (230V).
• Check that the HMI is correctly connected to the CPU.

• Check if the yellow LED lights up when you press the Ventilation On/Off button.
• Check the electrical supply to the motor
• If you have a variable frequency drive, check its power supply and the connections of the On/Off contacts.

• Check that the speed sensor is properly connected to the controller.
• Turn off and then turn on the power to the controller.
• Change probe connector (SONDE1/SONDE2)

The controller does not provide power, it provides a normally open contact. The light must still be connected to the power supply through the relay, in the same way as a switch.

Carry out the threshold settings (see operating instructions)

Check with a voltmeter if the 0/10V output (SA1 or SA2) varies:

•    If it changes, check the VFD connections
•    If it does not change, check the correct positioning of the probe on the fume hood, check the correct operation of the linear position sensor (PTLI mode, 2V EA1) or of the position switch (2V EC2 mode) and carry out the adjustment procedure again (see operating instructions)

• Check the direction of rotation of the motor. A SEAT fan running in the wrong direction will only draw 20% of its capacity. Reversing the volute (LG <->RD) has the same effect.
• Check that the fan is correctly sized for the installation.
• If a flow controller is used to control your fume hood, then redo the settings. The 0/10V signal sent to the controller is certainly too small.

Indicates a guillotine overrun (window too high). This height can be modified in the threshold settings.

• Check that the fan is correctly sized for the installation.
• If a flow controller is controlling your fume hood, then redo the settings. The 0/10v signal sent to the controller is probably too large.

• Make the alarm threshold settings again.
• The alarm delay may be too short. The alarm delay can be set in the BUZZER DELAY menu. See the operating instructions.

In the setup menu, select the transposed speed display (Adjusd spd) and enter the speed read from the anemometer. Next, set the thresholds.