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4.5 Troubleshooting.
The table above helps the user to troubleshoot possible connectivity problems linked to the control device when the ECRO-RV
is put into service.
Problem :
The VFC11 HMI does not light up and does not emit any bip.
Cause :
The device is not powered.
Solution :
Check both the connection cable between the HMi and the control device, and the230 vac-50Hz mains voltage on the
control device.
Problem :
The face velocity remains at 0.00m/s whereas there is suction.
Cause :
The probe is not connected to the regulator.
Solution :
Check the connection of the probe’s cable.
Problem :
The alarm is triggered as soon as it is powered.
Cause :
The sash is open above the high safety stop (entry “HIGH” closed)
Alarm response time too short.
Solution :
Check the alarm response time in the menu and the high sash contact.
Problem :
The motorised damper does not work.
Cause :
The 0-10V signal does not reach the control unit.
The motorised damper is not powered.
Solution :
Check the wiring and the regulator’s command signal.
Problem :
The inverter does not pilot the fan.
Cause :
The run command is not given to the fan
The 0-10 V signal does not reach the control unit.
Solution :
Check both the run command cable between the regulator and the frequency inverter, and the control signal.
Problem :
The fumehood does not light up.
Cause :
No tension
The output relay wiring is faulty.
Solution :
Check the output relay wiring and the supply wiring.
