Problems and solutions to common fault codes of SANY excavators

　　Different fault codes of each excavator manufacturer brand are different, and with the continuous upgrading and upgrading, the new fault codes require professional model troubleshooting, so some common problems when we use Sany excavators daily We need to simply understand the fault code. Even some excavator equipment that exceeds the manufacturer's warranty can usually solve the problem through personal replacement and troubleshooting. Of course, failures involving some core components still need to be solved by professional maintenance technicians.

　　1. Overview of fault codes

　　A fault code is a warning signal generated by the excavator's internal electronic control system when it detects an abnormal situation. By interpreting these fault codes, we can quickly locate the cause of the fault and take appropriate measures for repair. If the occurrence of the fault code does not involve core components, the excavator equipment can be used normally if conditions permit, but it needs to be resolved as soon as possible. Especially in the case of engine, hydraulic pump and high-risk faults, the user needs to stop the machine immediately for inspection and arrangement. Solve the problem to avoid secondary damage.

　　1. Fault code E16: Water temperature sensor short circuit

　　Possible cause of failure: The water temperature sensor circuit is short-circuited.

　　Solution: Check whether the water temperature sensor circuit is short-circuited. If there is any problem, please replace the water temperature sensor with a new one.

　　2. Fault code E18: Insolation sensor short circuit

　　Possible cause of failure: Short circuit in the solar radiation sensor circuit.

　　Solution: Check whether the insolation sensor circuit is short-circuited. If there is any problem, please replace it with a new insolation sensor.

　　3. Fault code E41: Engine speed is too low

　　Possible cause of failure: The engine speed sensor is damaged.

　　Solution: Check whether the engine speed sensor is damaged and replace the engine speed sensor.

　　4. Fault code E42: Sany excavator HCU system alarm

　　Possible cause of failure: HCU system failure.

　　Solution: Check whether the HCU system is faulty and replace the HCU system.

　　5. Fault code E43: Sany excavator TRU system alarm

　　Possible cause of failure: TRU system failure.

　　Solution: Check whether the TRU system is faulty and replace the TRU system.

　　6. Fault code E44: Excavator oil pressure is too low and alarms

　　Possible cause of failure: The oil pressure sensor is damaged.

　　Solution: Check whether the oil pressure sensor is damaged and replace the oil pressure sensor.

　　7. Fault code E45: Excavator oil level is too low alarm

　　Possible cause of failure: The oil level sensor is damaged.

　　Solution: Check whether the oil level sensor is damaged and replace the oil level sensor.

　　8. Fault code E46: Excavator water temperature is too high and alarms

　　Possible cause of failure: The water temperature sensor is damaged.

　　Solution: Check whether the water temperature sensor is damaged and replace the water temperature sensor.

　　9. Fault code E47: Excavator air filter is clogged.

　　Possible cause of failure: The air filter is clogged.

　　Solution: Check whether the air filter is clogged and clean the air filter.

　　10. Fault code E48: Abnormal engine speed (too low)

　　Possible cause of failure: The engine speed sensor is damaged.

　　Solution: Check whether the engine speed sensor is damaged and replace the engine speed sensor.

　　11. Fault code E49: Abnormal power supply voltage alarm

　　Possible cause of failure: The power supply voltage is unstable.

　　Solution: Check whether the power supply voltage is normal and replace the power supply voltage.

　　12. Fault code E50: Abnormal engine speed (too high)

　　Possible cause of failure: The engine speed sensor is damaged.

　　Solution: Check whether the engine speed sensor is damaged and replace the engine speed sensor.

　　13. Fault code E51: Hydraulic oil temperature is too high

　　Possible cause of failure: Hydraulic oil temperature is too high.

　　Solution: Check whether the hydraulic oil temperature is too high and lower the hydraulic oil temperature.

　　14. Fault code E52: Abnormal oil-water separation

　　Possible cause of failure: The oil-water separator is damaged.

　　Solution: Check whether the oil-water separator is damaged and replace the oil-water separator.

　　15. Fault code E53: Poor motor operating range

　　Possible cause of failure: The motor's operating range is abnormal.

　　Solution: Check whether the motor action range is normal and adjust the motor action range.

　　16. Fault code E54: Motor action pauses.

　　Possible cause of failure: Motor failure.

　　Solution: Check whether the motor is faulty and replace the motor.

　　17. Fault code E55: Motor setting potentiometer.

　　Possible cause of failure: The potentiometer used for motor setting is damaged.

　　Solution: Check whether the motor setting potentiometer is damaged and replace the motor setting potentiometer.

　　18. Fault code E56: Abnormal front pump pressure.

　　Possible cause of failure: The front pump pressure is abnormal.

　　Solution: Check whether the front pump pressure is normal and adjust the front pump pressure.

　　19. Fault code E57: Abnormal rear pump pressure.

　　Possible cause of failure: Abnormal rear pump pressure.

　　Solution: Check whether the rear pump pressure is normal and adjust the rear pump pressure.

　　20. Fault code E58: Bucket excavation pilot abnormality.

　　Possible cause of failure: Bucket excavation pilot failure.

　　Solution: Check whether the bucket excavation pilot is faulty and replace the bucket excavation pilot.

　　21. Fault code E59: Bucket unloading pilot abnormality.

　　Possible cause of failure: Bucket unloading pilot failure.

　　Solution: Check whether the bucket unloading pilot is faulty and replace the bucket unloading pilot.

　　22. Fault code E60: Digging pilot of the stick is abnormal.

　　Possible cause of failure: Digging pilot failure of the bucket rod.

　　Solution: Check whether the arm digging pilot is faulty and replace the arm digging pilot.

　　23. Fault code E61: The stick unloading pilot is abnormal.

　　Possible cause of failure: bucket rod unloading pilot failure.

　　Solution: Check whether the arm unloading pilot is faulty and replace the arm unloading pilot.

　　24. Fault code E62: Boom lifting abnormality.

　　Possible cause of failure: Boom lifting failure.

　　Solution: Check whether the boom lift is faulty and replace the boom lift.

　　25. Fault code E63: Abnormal boom lowering.

　　Possible cause of failure: boom lowering failure.

　　Solution: Check whether the boom lowering is faulty and replace the boom lowering.

　　26. Fault code E64: Rotary pilot abnormality.

　　Possible cause of failure: Rotary pilot failure.

　　Solution: Check whether the rotary pilot is faulty and replace the rotary pilot.

　　27. Fault code E65: Left traveling pilot abnormality.

　　Possible cause of failure: Left-hand pilot failure.

　　Solution: Check whether the left traveling pilot is faulty and replace the left traveling pilot.

　　28. Fault code E66: Right traveling pilot abnormality.

　　Possible cause of failure: right-hand pilot failure.

　　Solution: Check whether the right traveling pilot is faulty and replace the right traveling pilot.

　　29. Fault code E67: Standby pilot abnormality.

　　Possible cause of failure: Backup pilot failure.

　　Solution: Check whether the backup pilot is faulty and replace the backup pilot.

　　30. Fault code E68: Abnormal pressure in the main relief valve.

　　Possible cause of failure: The pressure of the main relief valve is abnormal.

　　Solution: Check whether the pressure of the main relief valve is normal and adjust the pressure of the main relief valve.

　　31. Fault code E69: The proportional valve of the main pump is abnormal.

　　Possible cause of failure: Main pump proportional valve failure.

　　Solution: Check whether the main pump proportional valve is faulty and replace the main pump proportional valve.

　　32. Fault code E70: Engine overspeed.

　　Possible cause of failure: The engine speed is too fast.

　　Solution: Check whether the engine speed is normal and adjust the engine speed.

　　33. Fault code E71: Engine failed to start.

　　Possible cause of failure: startup system failure.

　　Solution: Check whether the startup system is normal and eliminate startup failures.

　　34. Fault code E72: Engine stalls.

　　Possible cause of failure: flameout system failure.

　　Solution: Check whether the flameout system is normal and eliminate the flameout failure.

　　35. Fault code E73: Hydraulic pump is empty.

　　Possible cause of failure: Hydraulic pump is empty.

　　Solution: Check the air suction condition of the hydraulic pump and eliminate the air suction failure.

　　36. Fault code E74: Hydraulic pump is worn.

　　Possible cause of failure: The hydraulic pump is severely worn.

　　Solution: Check the wear of the hydraulic pump and replace severely worn parts.

　　37. Fault code E75: Multi-way valve failure.

　　Possible cause of failure: The multi-way valve is not working properly.

　　Solution: Check whether the multi-way valve is working normally and replace the faulty multi-way valve.

　　38. Fault code E76: Hydraulic oil contamination.

　　Possible cause of failure: Hydraulic oil contamination.

　　Solution: Check whether the hydraulic oil is contaminated, replace the contaminated hydraulic oil and clean the hydraulic system.

　　39. Fault code E77: Radiator blocked.

　　Possible cause of failure: The radiator is clogged.

　　Solution: Check whether the radiator is blocked, clean the radiator or replace it with a new one.

　　40. Fault code E78: The fan belt is loose or broken.

　　Possible cause of failure: The fan belt is loose or broken.

　　Solution: Check the tension of the fan belt and replace the loose or broken fan belt if necessary.

　　41. Fault code E79: The battery is low.

　　Possible cause of failure: The battery is low in power.

　　Solution: Check the battery power, charge or replace the battery with a new one if necessary.

　　42. Fault code E80: Operation handle failure.

　　Possible cause of failure: operating handle failure.

　　Solution: Check whether the operating handle is working properly. If there is a fault, repair or replace it.

　　43. Fault code E81: Display failure.

　　Possible cause of failure: Monitor failure.

　　Solution: Check whether the monitor is working properly and repair or replace it if it is faulty.

　　44. Fault code E82: Communication failure.

　　Possible cause of failure: The communication connection between various parts of the excavator is abnormal.

　　Solution: Check whether the communication connections between various parts of the excavator are normal and eliminate communication faults.

　　2. Summary and suggestions

　　If individual users or corporate users need to purchase excavator accessories and auxiliary tools, TD can provide common types of construction machinery accessories on the market, not just excavators. Whether it is price or transportation, TD is the most competitive in the industry. We usually ship directly with the manufacturer, eliminating unnecessary links and reducing purchase costs. Of course, TD recommends purchasing some wearing parts locally unless they are in remote areas. If you have core excavation components such as engines, hydraulic pumps, multi-way valves, and motherboards, you can contact TD for equipment matching and purchase.