User Manual

C20T Model 641746
15
Error
code
Problem
Solution
F21
Error: Squeegee Up/Down
Motor Short Circuit
1. Check the wiring of the squeegee Up/Down motor
2. Replace the controller
F22
Error: Controller
Disconnection
Check if the CAN communication line is well
connected.
F23
Accelerator Connection Failure
1. Check the pedal wiring
2. Replace the pedal
3. Replace the controller
F24
Warning: Do Not Step on The
Accelerator to Start
1. Check the pedal wiring
2. Release the pedal and restart
3. Replace the pedal
F26
Temperature Sensor Failure
1. Controller temperature is too high or low
2. Replace the controller
F29
Error: Brush Motor Open
Circuit
Check the wiring of brush motor, and restart the
controller
F30
Error: Vacuum Motor Open
Circuit
Check the wiring of vacuum motor, and restart the
controller
F33
Error: Traction Motor Overload
Make sure no motor stall
F34
Error: Brush Motor Overload
Make sure no motor stall
F35
Error: Vacuum Motor Overload
Make sure no motor stall
F36
Error: Brush Up/Down Motor
Overload
Make sure no motor stall
F37
Error: Squeegee Up/Down
Motor Overload
Make sure no motor stall
F52
Warning: temperature of
controller is too high
Controller temperature is too high, please check load
F55
Warning: No Clean Water
1. Add clean water
2. Check the wiring of water volume indicator
3. Replace the switch of water indicator
F56
Warning: Dirty Water Full
1. Drainage the dirty water
2. Check the wiring of water indicator switch
3. Replace the water indicator switch
F57
Warning: Pressure Switch Not
Triggered
Check the wiring of pressure switch, and restart the
controller
F82
Error: Electronic Brake Open
Circuit
Check the wiring of brake, restart the controller
F83
Error: Electronic Brake Short
Circuit
1. Check the wiring of electromagnetic brake
2. Replace the electromagnetic brake
F85
Speed Limiter Failure
Check the voltage of the speed limiter, and restart the
controller
F86
Warning: Beeper Open Circuit
Check the wiring of horn