0458-660-0121-A
24
English
16 Troubleshooting
The air flow rate is less
than 20 m/s. The air
velocity monitoring LED in
the suction hose lights up
and a succession of short
beeps is heard.
The diameter of the suction hose is not set
correctly.
► Set the diameter of the suction hose.
The filter bag or the container is full. ► Replace filter bag or empty the container.
The filter is dirty. ► Clean or replace the filter.
The suction hose, the hand tube or the
accessory is blocked up.
► Clean the suction hose, hand tube or
accessory.
The seal between the top part and the container
is dirty or damaged.
► Clean seal between top part and container or
ask a STIHL authorized dealer to replace it.
Fault Cause Remedy
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