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7
Troubleshooting
Danger
Determining the causes for existing defects and eliminating these always requires
increased attention and caution. Pull the mains plug beforehand!
Some of the most frequent defects and their causes are listed in the following chart. In case of other defects,
please contact your dealer or the MAFELL customer service directly.
Defect
Cause
Elimination
The milling motor cannot be
switched on
The setting wheel does
not
light
up
There is no mains voltage
Check the power supply
The mains fuse is defective
Replace the mains fuse
The milling motor cannot be
switched on. The setting wheel
lights up in
blue
(BU)
The carbon brushes are worn
Take the milling motor to the
MAFELL customer service
The milling motor stops during
operation. The setting wheel
does
not
light up
Mains failure
Check the mains back-up fuses
The milling motor stops during
operation. The setting wheel
lights up in
red
(RD)
The overload protection was
triggered
Switch off the power switch. Clear
the working spindle before initial
operation
Switch on the power switch and
continue operation with reduced
load/feed rate
The speed cannot be adjusted at
the setting wheel
The milling motor is in portal
mode
Switch off the power supply of the
PV interface
Remove the external connection of
the PV interface
The speed cannot be controlled
via the PV interface
The power supply of the PV
interface is missing / is
inadequate
Switch on the power supply of the
PV interface in accordance with
the specification
The contacting to the portal
connector is insufficient
Check the contacting
The PV control cable is defective Replace the PV control cable
The assignment of the PV
interface is incorrectly connected
with the portal system
Connect the PV control cable
according to chapter “Assignment
portal connector”
