Shenzhen Hpmont Technology Co., Ltd Chapter 7 Troubleshooting
HD30 Series Inverters User Manual ―113―
Fault code
Fault name Possible reasons of fault Counter-measures
• Mains supply voltage is too
low
• Motor load is too high
• Please use inverter with proper
power rating
E0018
Inverter output is
unloaded
• Load disappeared or comes
down suddenly
• Parameters are not set
properly
• Please check load and
mechanical transmission
devices
• Please set the parmeters
properly
E0019 Motor overload
• Improper setting of V/f curve
• Mains supply voltage is too
low
• Normal motor runs for a long
time with heavy load at low
speed
• Motor’s overload protection
factor is not set properly
• Motor runs with blocked
torque or load is too heavy
• Adjust the setting of V/f curve
• Check the power input
• Please use special motor if the
motor needs to operate for a
long time with heavy load
• Please properly set the
overload protection factor of
the motor
• Please check the load and
mechanical transmission
devices
E0020 Motor overheat
• Motor overheat
• The setting of motor
paramteters is incorrect
• Reduce the load; Increas the
acceleration/deceleration time;
Repaire or replace the motor
• Set the motor parameter
according to the motor’s
nameplates
E0021
Access fault of
Control board
EEPROM
• Memory circuit fault of control
board EEPROM
• Please contact the supplier for
repairing
E0022
Access fault of
display panel
EEPROM
• Memory circuit fault of display
panel EEPROM
• Replace the display panel
• Please contact the supplier for
repairing
E0023
Fault setting of
parameters
• The power rating between
motor and inverter is too
different
• Improper setting of motor
parameters
• Select an inverter with suitable
power rating
• Please set correct value of
motor parameters
E0024
Fault of external
equipment
• Fault terminal of external
equipment operates
• Please check external
equipment
E0025
PID reference
loss
• Analogue reference signal is
smaller than the lower limit
voltage
• Analogue input circuit fault
• Please check the connection
• Please seek technical support
E0026
PID feedback
loss
• Analogue setting signal is
smaller than the lower limit
voltage
• Analogue input circuit fault
• Please check the connection
• Please seek technical support
E0027
PID feedback
out of limiting
• Analogue setting signal is
bigger than the lower limit
• Please check the connection
• Please seek technical support
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