Key-Disp KD21C User Manual page 18

Electric bicycle meter
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Some wire use the water-proof connector, users can not see the inside color.
Error Code
21
22
23
24
25
30
No.
1
2
3
4
5
6
7
8
Line sequence table
Line
Color
1
Red(VCC)
2
Blue(K)
3
Black(GND)
4
Green(RX)
5
Yellow(TX)
Attached list 1:Error code definition
Motor Hall Signal Abnormality
Communication Abnormality
Attached list 2: Personality Parameter settings
Settings item
Battery Power Bar Settings
Power assistant level Settings
Over-current Cut Settings
Power Assistant Sensor Settings
Speed Sensor Settings
Throttle Function Settings
System Settings
Power-on Password Settings
15
Function
+
Lock
-
RX
TX
Definition
Current Abnormality
Throttle Abnormality
Motor Abnormality
Brake Abnormality
Screen display

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Questions and answers

Tommy
February 21, 2025

How to reset total miles on display

1 comments:
Mr. Anderson
February 21, 2025

The total miles (odometer) on the Key-Disp KD21C display cannot be reset. Only the trip counter can be reset by pressing and holding the plus (+) and minus (-) buttons, then selecting "Y" for yes, and confirming with the power button.

This answer is automatically generated

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