MEC升降车平台94225-SCH维修电气原理图手册

Section 14-Fault CodesSeptember 2023Fault CodesThe LED readout screen displays fault codes that provide information about themachine operating status and about malfunctions.The fault codes listed in thefollowing charts describe malfunctions and can aid in troubleshooting the machine byAt5533pinpointing the area or component affected.List of Fault CodesCodeDescriptionLift ReactionFailure Reason SolutionSystem initialization failure if fault last more than a couple01System Initialization FaultDisables All Motionseconds.The system will prohibit all actions.Solution:1.Try to power on again.The CAN bus communication between the upperllowercontroller is faulty,and the system will prohibit all actions.1.The lower or upper communication cable isdamaged.02System Communication FaultDisables All Motion2.The upper control is faulty,replace the platformcontrol box.3Measure battery voltage.4.Check power relay.5.Replace ECU.The current model code inside the ECU is not set to thecorrect model03Disables All MotionSolution:Invalid Option Setting Fault1.Try to reset the mode code of the correspondingmodel (for specific operation steps and model codesof each model.1.If the angle sensor calibration fails,it may be thatthe angle sensor analog output changes too littleor no change during the calibration process.Checkwhether the angle sensor is firmly fixed,whether the04Calibration FaultWarning Onlypower supply and wiring are normal.Replace theangle sensor.2.No-load/full-load calibration fails,it may be that thepressure sensor and angle sensor analog outputchanges too little or no change during the calibrationprocess,or the machine is not level.Platform/base control key switch failure or up down08Key Switch ErrorDisables All Motioncontrol switching action is too fast.1.Try to restart the power supply.2.Replace Key switch.The built-in GPS module or external GPS modulecommunication failed (if equipped).9GPS Communication FaultWarning OnlySolution:1.Check whether the connection between the CANcommunication bus of the external GPS module andthe CAN bus of the machine is normal.10MC Communication FaultWarning OnlyCheck whether the wiring of the motor controller is normal,check the wiring from the controller to the drive motor.Lithium battery BMS CAN bus communication failure,onlyalarm.BMS Communication FaultSolution:11(Lithium battery equippedWarning Only1.Check whether the CAN bus communicationonly)between the lithium battery and the machine isnormal.Replace the lithium battery.Page 42Micro26Ac-Service Parts Manual(mec)