INVT GD170-045-4-PV User Manual

Goodrive170-PV Series Solar Pump Inverter Fault diagnosis and solution
-54-
Fault
code
Fault type
Possible cause
Solution
ETH1
To-ground
short-circuit fault 1
 Inverter output is short
connected to the ground.
 There is a fault in the
current detection circuit.
 Check whether the motor
wiring is normal.
 Replace the Hall device.
 Change the main control
board.
ETH2
To-ground
short-circuit fault 2
dEu
Speed deviation
fault
 The load is too heavy or
stalled.
 Check the load and
increase the detection time
if the load is normal.
 Check whether control
parameters are set
correctly.
STo
Mal-adjustment
fault
 SM control parameters
are set incorrectly.
 Autotuned parameters
are not accurate.
 The inverter is not
connected to the motor.
 Check the load and ensure
the load is normal.
 Check whether control
parameters are set
correctly.
 Increase the
maladjustment detection
time.
LL
Electronic
underload fault
 The inverter reports
underload pre-alarm
according to the setting.
 Check the load and
overload pre-alarm
threshold.
tSF
Hydraulic probe
damage fault
 Hydraulic probe damage
 Replace the hydraulic
probe
PINV
PV reverse
connection fault
 PV wiring is incorrect.
 Change the wiring direction
of positive and negative
terminals, and perform the
wiring again.
PVOC
PV overcurrent
 ACC/DEC is too fast.
 The power of the inverter
is too low.
 The load transients or is
abnormal.
 There is to-ground short
circuit.
 Increase the ACC/DEC
time.
 Select the inverter with a
larger power.
 Check if the load is short
circuited (to-ground short
circuit or line-to-line short
circuit) or the rotation is not
smooth.

INVT GD170-045-4-PV Specifications

General

Brand	INVT
Model	GD170-045-4-PV
Category	Inverter
Language	English