193
Fault
code
Fault type Possible fault cause Solutions
When reverse running is prohibited,
reverse rotating auto-tuning is
performed.
Cancel the reverse running prohibition
Auto-tuning overtime
Check motor wiring
Check the P02.16 (upper limit frequency) and see
whether the P02.17 set value is lower than rated
frequency.
Er.PST
Parameter setting
error
Wrong analog AI function selection
setting
The same function shall not be selected for
different analogs simultaneously.
Er.24v
Control board 24V
power short circuit
Short circuit of P24 and terminal COM
Confirm whether the wiring of P24 and COM is
correct
The interface board circuit is damaged.
Replace the interface board, seek for service
support
Er.GdF
Grounding short
circuit fault
One of the phases (The most likely
one is phase U) is grounding short
circuited.
Check the grounding short circuit of the output
three phase and troubleshoot it.
Er.dEv
Too large speed
deviation (DEV)
fault
DEV deviation detection value setting
is too low.
Modify the DEV detection value setting
Heavy load fluctuation Eliminate the load vibration
Er.Fbo
PID feedback
exceeding limit
PID feedback value out of limited
range
Check whether the feedback value input voltage is
normal, if normal, seek for service support
Er.oHL
Motor
over-temperature
The ambient temperature is too high. Lower the ambient temperature
The motor duct is blocked. Clean the motor duct
The motor fan is damaged. Replace the motor fan
The motor operates at low frequency
and large load for a long time.
Add a large fan for the motor to dissipate heat
Er.AIF
Abnormal AI analog
input
Abnormal control circuit Seek for service support
The input analog is out of the range
and the absolute value is greater than
11V
Check the analog input
Er.THI
Inverter module
temperature
sampling
disconnection
Abnormal temperature sampling circuit Seek for service support
The inverter module temperature
sampling wire is poorly connected.
Check the inverter module temperature sampling
wire connection
Er.THr
Rectifier module
Abnormal temperature sampling circuit Seek for service support
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