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roubleshootIng
Failure Code Information
When the motor is failure-free standby, the LED indicator light of the driver will be on for 1 second, off for 1 second, and flickering
following the cycle;
When the motor runs normally, the LED indicator light of the driver will be always on;
If there is failure, the indicator light will be on for 0.3 second, off for 0.3 second, flickering for N times and off for 3 seconds, then
flickering following the cycle. Failure code and elimination method are as shown in the following table:
Flicker Times (N) of the
Driver Indicator Light
Failure Description
Suggested Elimination Method
1
Motor overcurrent protection
Check whether there is open circuit or short
circuit on the motor lead
3
Over-voltage protection of driver DC bus
Check the power supply voltage value
4
Under-voltage protection of driver DC bus
Check the power supply voltage value
5
Motor stall protection
Check whether the motor or drought fan is loos-
ened or the air outlet is blocked
6/8
Motor stalling/boot failure protection
Check whether the drought fan got stuck by
foreign matter
7
Motor open-phase protection
Check whether the motor or drought fan is poor
repair stitching, or whether there is short circuit
or open circuit on the motor lead
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