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SR SUNTOUR HESC system has a
simple diagnostic function. In case
if an error code message code will
appear in the display window, turn
the system completely off and
then on. If the error message still
appears, contact your local dealer
for further assistance.
Error codes
Error code shows up
Error code list
Error Code Error types Problem Description Trouble shooting If problem still exists
Controller
E00 No communication Controller
communication problem
Check the display connects
to display cable, then power-
on again
Replace controller or
display or display cable
E01 Over current & over heat Wrong function with
driver IC
Turn off the system, let the
controller cool down and re-
start the system
Replace controller
E04 Short for light cable Bike lightning system Check the lighting system of
the bike
Replace lighting system or
controller
E05 Flash ROM initialization error Controller Data failure
Remove the battery for 30
seconds, re-mount, then
power-on again
Replace controller
Sensor
E21 Irregular out-put voltage or no
connection
Torque Sensor electrical
problem
Check the sensor cable
contacts Replace the sensor
E22 Mechanical problem Torque Sensor
mechanical problem
Check the torque sensor
mechanism for any problems Replace the sensor
Battery
E31 Battery error Battery electric current
sensor error
Remove the battery for 30
seconds, re-mount, then
power-on again
Replace the controller
E32 Battery overcurrent error Battery overcurrent error Turn off the main switch and
turn on
Replace the controller or
battery
E33 Battery communication error Battery communication
error
Turn off the main switch and
turn on
Replace the battery cable
or battery
E34 Out of battery voltage range Battery voltage error Please check that the battery
is dedicated to the system Replace battery
E35 Battery overheat error Battery over-
temperature
error
Remove the battery and let it
cool down. after that, re-
mount, then power-on again
Replace battery
Motor
E41 Motor overheat Motor overheating
problem Let the motor cool down Replace motor or motor
cable
E42 HALL sensor error or no connection Motor Sensor failure Check the motor-cable
contacts to the motor
Replace the motor if it
doesn't solve this error
E43 Speed sensor error (cannot detect
speed) Speed sensor failure Check the magnet sensor in
the motor shell Replace the motor
21


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