11
ATTIX 791-2M/B1
8 Troubleshooting
Fault Cause Remedy
‡ Motor does not start > Fuse of the mains socket has
blown.
• Connect mains fuse.
> Overload protection switch
has tripped.
• Switch off the vacuum cleaner
and allow it to cool for approx.
5 minutes. If the cleaner can-
not be started again, contact
the Nilfisk-Alto service depart-
ment.
‡ Motor does not run in auto-
matic mode
> Power tool is defective or not
connected properly.
• Check that the power tool
works or that the plug is in-
serted correctly.
> The power rating of the elec-
trical tool is too low.
• Note that minimum power rat-
ing is P>40W
‡ The acoustic warning
sounds. (Reduced suction
power)
> Suction power selected with
suction power control is too
low.
• Set suction power in accord-
ance with section 4.2.3. „Set-
ting suction power“.
> Hose diameter and switch
position do not correspond.
• Set correct switch position for
hose diameter.
> Clogged suction hose/nozzle. • Clean suction hose/nozzle
> Filter bag is full. • See section 7.2.2 „Replacing
filter bag“.
> Filter element is clogged. • See section 4.5/4.6 „Cleaning
filter element“ and 7.2.5/7.2.6
„Replacing filter element“.
‡ No suction power during
wet cleaning
> Tank is full. (Float does not
close the suction opening).
• Switch off the cleaner. Empty
the tank.
‡ The vacuum cleaner
switches off during wet
cleaning
> Tank is full. • Switch off the cleaner. Empty
the tank.
‡ Voltage fluctuations > Impedance of power supply is
too high.
• Connect the cleaner to an-
other socket closer to the fuse
box. Voltage fluctuations over
7% should not occur if the im-
pedance at the transfer point
is ≤ 0.15 Ω .
