Kelly Ebike Brushless DC Motor Controller User
’s Manual
V 3.3
Page 12
Table 1: LED CODES
LED Code
Explanation
Solution
Green Off
No power or not
operating
1. Check if all wires are correct.
2. Check fuse and power supply.
Green On
Normal operation
That’s great! You got solution!
Green and Red LED
Keep On
1. Software is upgrading.
2. Supply voltage is too low or battery is too high.
3. The controller is damaged. Please contact Kelly
for warrantee.
Red LED Codes
LED Code
Explanation
Solution
1,2
¤ ¤¤
Over voltage error
1. Battery voltage is higher than max operating
voltage of the controller. Please check the
battery voltage and configuration.
2. Over voltage at regeneration. Controller will cut
back or stop regeneration.
3. Please note there could be 2% error with
Overvoltage setting.
1,3
¤ ¤¤¤
Low voltage error
1. The controller will attempt to clear the fault
code automatically after 5 second if battery
voltage returns to normal.
2. Check the battery voltage.
3. Charge battery if necessary.
1,4
¤ ¤¤¤¤
Over temperature
warning
1. The controller temperature is over 90ºC. The
controller will cut back current in the case. Stop
or reduce output to ensure the temperature fall.
2. Improve heat sink or airflow.
2,1
¤¤ ¤
Motor fails to start
1.
Motor hasn’t reached 25 electrical RPM after 2
seconds from starting. Most likely the hall or
phase wiring problem.
2,2
¤¤ ¤¤
Internal voltage
fault
1. Check if the B+ and PWR voltage are correct,
refer to B- or RTN. Could be PWR voltage low.
2. Please check load on 5V supply. Could be high
load on 5V. Incorrect pot wiring can load it
heavily.
3. The controller is damaged. Please contact
Kelly for warrantee.
2,3
¤¤ ¤¤¤
Over temperature
1. When controller’s temperature is over 100
℃
. it
will stop driving in order to protect itself.
2. Stop driving and wait for temperature fall. The
controller will restart if temperature drops below
80
℃
.