INVT GD270-090-4 - Page 254

Goodrive270 series VFD for fan and pump Troubleshooting
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Fault
code
Fault type Possible cause Solution
interference.
Keypad or mainboard
communication circuit
error.
maintenance services.
DNE
Parameter download
error
Keypad cable connected
improperly or
disconnected.
Keypad cable too long,
causing strong
interference.
Data storage error
occurred to the keypad.
Check for and remove the
external interference source.
Replace the hardware and seek
maintenance services.
Re-back up the data on the
keypad.
ETH1
To -ground
short-circuit fault 1
VFD output is short
connected to the ground.
There is a fault in the
current detection circuit.
Actual motor power setup
deviates sharply from the
VFD power..
Check whether the motor wiring
is normal.
Replace the hall component.
Replace the main control board.
Reset the motor parameters
properly.
ETH2
To -ground
short-circuit fault 2
VFD output is short
connected to the ground.
There is a fault in the
current detection circuit.
Actual motor power setup
deviates sharply from the
VFD power..
Check whether the motor wiring
is normal.
Replace the hall component.
Replace the main control board.
Reset the motor parameters
properly.
dEu
Speed deviation
fault
The load is too heavy or
stalled.
Check and ensure the load is
proper, and increase the
detection time.
Check whether the control
parameters are set properly.
S To Mal-adjustment fault
Incorrect SM control
parameter settings.
Autotuned parameters
are not accurate.
The VFD is not connected
to the motor.
Check the load and ensure the
load is normal.
Check whether control
parameters are set correctly.
Increase the mal-adjustment
detection time.