Shenzhen Hpmont Technology Co., Ltd. Chapter 8 Troubleshooting and Maintenance
HD09 Series User Manual V1.1 -57-
Fault Fault reasons Counter-measures
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 runs with blocked torque or
load is too heavy
• Adjust thesetting of V/f curve (F09.01 -
F09.06)
• Check the power input
• Please use special motor
• Please check the load and mechanical
transmission devices
E0021
Access fault of
Control board
EEPROM
• Memory circuit fault of control
board EEPROM
• Please contact the supplier for
repairing
E0024
Fault of external
equipment
• Fault terminal of external
equipment operates
• Please check external equipment
E0028
SCI communication
time-out
• Connection fault of
communication cable
• Disconnected or not well
connected
• Please check the connection
E0029
SCI communication
error
• Connection fault of
communication cable
• Disconnected or not well
connected
• Communication setting error
• Communication data error
• Please check the connection
• Please check the connection
• Please correctly set the
communication format (F17.00), and
the baud rate (F17.01)
Note:
If E0028 or E0029 are displayed on the keypad, there is no need to stop the inverter.
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