fault tracing vacon • 33
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5
8
System fault
• component failure
• faulty operation
Reset the fault and
restart.
If the fault re-occurs, con-
tact the distributor near to
you.
NOTE! If fault F8 occurs,
find out the subcode of the
fault from the Fault His-
tory menu under Id xxx!
9
Undervoltage
The DC-link voltage has gone
below the internal safety limit:
• most probable cause: supply
voltage is too low
• frequency converter internal
fault
• Power outages
In case of temporary sup-
ply voltage break reset the
fault and restart the fre-
quency converter. Check
the supply voltage. If it is
adequate, an internal fail-
ure has occurred.
Contact the distributor
near to you.
11
Output phase fault
Current measurement has
detected that there is no current
in one motor phase.
Check motor cable and
motor.
13
Frequency converter
undertemperature
Heat sink temperature is under
-10
°C
Check the ambient tem-
perature.
14
Frequency converter
overtemperature
Heat sink is overheated.
Check that the cooling air
flow is not blocked.
Check the ambient tem-
perature.
Make sure that the
switching frequency is not
too high in relation to
ambient temperature and
motor load.
15
Motor stalled
Motor stall protection has
tripped.
Check that the motor is
able to rotate freely.
16
Motor overtempera-
ture
Motor overheating has been
detected by frequency converter
motor temperature model. Motor
is overloaded.
Decrease the motor load.
If no motor overload
exists, check the temper-
ature model parameters.
17
Motor underload
Motor underload protection has
tripped.
Check motor and load,
e.g. for broken belts or dry
pumps.
Fault
code
Fault name Possible cause Correcting actions
Table 5.1: Fault codes
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