Vents 100 VKO, User Manual, Page: 11 / 24

11
EN
TROUBLESHOOTING
Problem Possible reasons Troubleshooting
When the unit is connected to power
mains, the fan does not rotate and
does not respond to any controls.
No power supply.
Make sure the power supply line
is connected correctly, otherwise
troubleshoot the connection error.
Internal connection fault. Contact the Seller.
Low air flow. The ventilation system is clogged. Clean the ventilation system.
Increased noise, vibration.
The impeller is clogged. Clean the impeller.
The fan is not secured well or is not
mounted properly.
Troubleshoot the installation error.
The ventilation system is clogged. Clean the ventilation system.
TECHNICAL MAINTENANCE
The fan maintenance periodicity is at least once per 6 months. Maintenance steps:
• Connect power supply to the fan (Fig. 13).
• Remove the air ducts (Fig. 14).
• To clean the fan, use a soft cloth and a brush wetted in a mild detergent solution.
• Wipe the fan surfaces dry.
• Connect air ducts to the fan.
• Connect power supply to the fan (Fig. 16).
WARNING! Do not allow water or liquid come into contact with electric components!