INVT GD20-0R4G-2-UL, Operation Manual

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Goodrive20-UL Series VFD Fault tracking
-109-
Fault
code
Fault type Possible cause Solutions
OH1
[15] Rectifier
module overheat

Air duct jam or fan
damage.

Ambient temperature
is too high.

The time of overload
running is too long.

Dredge the vent duct
or replace the fan.

Low the ambient
temperature.
OH2
[16] Inverter module
overheat
EF [17] External fault

SI external fault input
terminals action.

Check the external
device input.
CE
[18] 485
communication
fault

The baud rate setting
is incorrect.

Fault occurs to the
communication
wiring.

The communication
address is wrong.

There is strong
interference to the
communication.

Set proper baud rate.

Check the
communication
connection
distribution.

Set proper
communication
address.

Chang or replace the
connection
distribution or improve
the anti-interference
capability.
ItE
[19] Current
detection fault

The control panel
connector is in poor
contact;

An exception occurs
on the magnifying
circuit.

Check the connector
and re-plug.

Change the main
control panel.
tE
[20] Motor
autotuning fault

The motor capacity
does not comply with
the VFD capability.

The rated parameter
of the motor does not
set correctly.

The offset between
the parameters from
autotune and the

Change the VFD
mode.

Set the rated
parameter according
to the motor name
plate.

Empty the motor load.

Check the motor
connection and set