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5 Troubleshooting
VFD700 AC Drive Getting Started Guide 75
5.2 Alarms
When alarming, the drive will keep running, and the keypad will display relative alarm code
(Hxxx), which will keep flashing for 3 seconds then turn over to the normal display (selected
by P05.01). The normal display will flash for 3 seconds then return back to flashing alarm
code, and this cycle will continue until the alarm is removed. Parameter P12.13 can be set to
display the warning information or not.
Table 5-3 Alarm codes and treatments
Codes
Descriptions
Possibilities
Treatments
H001
Current limit is
active
Output current is limited at:
P7.03×P00.14
(P13.07Motor1 rated current)
Check the motor cable
Properly increase the
acceleration and
decelerationtimes
Set P03.05to the correct start
mode (speed tracking and
restart)
H002
Motor overload is
integrating
Output current is higher than the
value of P13.07 (P13.19), until
overload trip occurs
Use larger motor and drive
H003
Heatsink is hot
Environment temperature is
high
Reduce the environment
temperature
Air flow channel blocked
Unblock the flow channel
Fan failure
Replace the fan
H004
IGBT junction
temperature is high
Frequently accelerating and
decelerating
Modify the parameter setup
Use larger drive
H005
Low DC bus
operation (only for
400V models)
Power supply voltage is low
Check the power supply
H006
Reserved
−
−
H007
Sleep mode
The drive is in sleep mode
After the drive is out of sleep
mode, the alarm is removed