Best E5 Series User Manual page 186

Chapter 6 Trouble Shooting Easures
Fault Fault
code Display
14 oPL
15 oL3
16 oH1
17 oH2
18 oH3
20 EC1
Fault
description
power supply
Motor cable connection
abnormal
Output Imbalance among motor
phase loss three phases
Incorrect setting of vector
control parameters
Overcurrent
Input power supply
Inverter
abnormal
module
overload
Motor output abnormal
protection
Inverter module
abnormal
Ambient temperature is
too high
Fan damaged
Heat sink
Air duct blocked
thermal
Temperature sensor
protection
abnormal
Inverter module
abnormal
Ambient temperature is
too high
Motor
(PTC) Improper setting of motor
thermal thermal protection point
protection
Detection circuit
damaged
Module Module detection circuit
temperatur damaged
e detection
Thermistor damaged
undisconne
cted
Ambient temperature is
too low
Expansion Expansion board 1
- 182 -
Causes
E5 User Manual
Solutions
input wiring
Check motor
connection
Check or replace the
motor
Correctly set vector
control parameters
Handle it with the
methods for overcurrent
Check input power grid
voltage
Check the motor or
motor connection
Seek services
Drop ambient
temperature
Replace the fan
Clear air duct
Seek services
Seek services
Drop ambient
temperature
Correctly set motor
thermal protection point
Seek services
Seek services
Seek services
Raise ambient
temperature
Seek services