Faults and rectification

ATTENTION: Call on the services of a trained specialist in the event of a fault. Faults on the ventilation unit may only be rectified by qualified electricians. Observe the supplementary safety instructions for PushPull ventilation units.

• Faults are indicated by a flashing LED code.
• In the event of a fault, the LED lights up and the vertical ventilation level LEDs flash according to the fault code.
• When the filter is due to be changed, only the vertical ventilation level LEDs flash. The symbol LED = Off.