Goodrive270 series VFD for fan and pump Troubleshooting
-245-
Fault
Fault type Possible cause Solution
LL
Electronic underload
fault
The VFD reports
underload pre-alarm
according to the setting.
Check the load and the underload
pre-alarm points.
OT
Motor
over-temperature
fault
Motor overtemperature
input terminal is valid.
The temperature
detection resistance is
abnormal.
Long-time overload
running or exception
Check the wiring of the motor
overtemperature input terminal
(terminal function 57).
Check whether the temperature
sensor is proper.
Check the motor, and perform
maintenance on the motor.
E-Err
Repeti
card type
The two inserted
expansion cards are of
the same type.
You should not insert two cards
with the same type. Check the
type of expansion card, and
remove one card after power-off.
F1-Er
Failed to identify the
expansion card in
card slot 1
There is data
transmission in interfaces
of card slot 1, however, it
cannot read the card type.
Check whether the expansion
card at this slot is supported.
Stabilize the expansion card
interfaces after power-off, and
check whether the fault persists
at next power-on.
Check whether the insertion port
is damaged, if yes, replace the
insertion port after power-off.
F2-Er
Failed to identify the
expansion card in
card slot 2
There is data
transmission in interfaces
of card slot 2, however, it
cannot read the card type.
Check whether the expansion
card at this slot is supported.
Stabilize the expansion card
interfaces after power-off, and
confirm whether a fault still
occurs at next power-on;
Check whether the insertion port
is damaged, if yes, replace the
insertion port after power-off.
C1-Er
Communication
timeout occurred to
the expansion card
in card slot 1
There is no data
transmission in interfaces
of card slot 1.
Check whether the expansion
card at this slot is supported.
Stabilize the expansion card
interfaces after power-off, and
confirm whether a fault still
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