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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
1
3
4
5
6/8
7
www.DaikinApplied.com
Failure Description
Motor overcurrent protection
Over-voltage protection of driver DC bus
Under-voltage protection of driver DC bus
Motor stall protection
Motor stalling/boot failure protection
Motor open-phase protection
Suggested Elimination Method
Check whether there is open circuit or short
circuit on the motor lead
Check the power supply voltage value
Check the power supply voltage value
Check whether the motor or drought fan is loos-
ened or the air outlet is blocked
Check whether the drought fan got stuck by
foreign matter
Check whether the motor or drought fan is poor
repair stitching, or whether there is short circuit
or open circuit on the motor lead
11
t
roubleshootIng
IM 745-3
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