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Troubleshooting
8
Troubleshooting
Fault
Description
NO RPM
Speed lower than
the lower threshold
value.
LOW RPM
Low speed.
OVER SPEED
Speed higher than
the maximum
threshold value.
LOW VOLTAGE
Low output voltage. Power box no
ALARM
Fault
C1 – C6
OVERLOAD
Overload of pow-
ered systems
SHORT CIRCUIT
Short circuit in pow-
ered systems
10
Nature of
connected
power box
Power box is in
standby mode.
After a short period
of time the power
box could no longer
supply voltage.
After a short period
of time the power
box no longer sup-
plies voltage.
longer supplies volt-
age.
Power box no
longer supplies volt-
age.
Power box no
longer supplies volt-
age
Fans continue to
run.
Power box no
longer supplies volt-
age.
Fans continue to
run.
Control Panel
Suggested remedy
Switch motor on or increase
speed.
Increase speed.
Reduce speed
If the problem persists, contact
customer service.
Increase speed in accord-
ance with the operating man-
ual for the power box.
Switch the power box off and
on again in accordance with
the operating manual for the
power box.
Switch the power box off and
on again in accordance with
the operating manual for the
power box.
If the problem persists, contact
customer service.
Reduce the connected load in
accordance with the operat-
ing manual for the power box.
Allow the power box to cool
down for a few minutes.
Switch the power box off and
on again in accordance with
the operating manual for the
power box.
Check all connected systems
and remove the short circuit.
Switch the power box on again
in accordance with the operat-
ing manual for the power box.
EN