60
Fault
code
Display
code
Fault description
Possible reasons
Actions
F.oU2
.
Over voltage in
Dec process
Too short Dec time (with
reference to generated
energy)
Prolong the Dec time
The load inertia is too high
Use suitable dynamic
braking device
F.oU3
.
Over voltage
inconstant-spee
d operating
process
Abnormal AC supply voltage
Check the AC supply
voltage
Too short Acc/Dec time
Prolong the Acc/Dec time
Abnormal change of input
voltage
Install input reactor
Too high load inertia
Use suitable dynamic
braking device
F.PoU
.
Reserved
Reserved
Reserved
F.IPL
.
Reserved
Reserved
Reserved
F.oPL
.
Output phase
loss
Output phase failure among
Phase U, V and W
Check the inverter’s
output wiring
Check the cable and the
motor
F.FAL
.
Inverter
moduleprotectio
n
Instant overcurrent
See User’s manual
Interphase
shorted
or
groundshorted
Re-wiring
Fan duct blockage or damage
Clear the fan duct or
replace the fan
Ambient temperature is too
high
Lower the ambient
temperature
Panel wiring or plug-ins losse Check and re-wiring
Output phase loss or some
other reasons result in current
waveform abnormalities
Check the wiring
Charge voltage damaged,
inverter voltage
undervoltage
Seek service
Straight bridge arm
Seek service
Panel abnormal
Seek service
F.oH1
.
Inverter module
heatsink
overheat
Ambient over-temperature
Lower the ambient
temperature
Obstruction of ventilation
channel
Clear the ventilation
channel
Fan does not work
Replace the fan
Inverter fault
Seek service
F.oH2
.
Reserved
Reserved
Reserved
F.oL1
.
Inverter overload Too short Acc time
Prolong Acc time
Содержание HV950-1R5G1(B)
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