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How to solve Error Code 15

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发表于 2025-7-9 15:21 | View All 阅读模式

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How to solve Error Code 15
Fault code:
【15】Inverter overcurrent hardware protection
Reason:
The main reasons for overcurrent hardware protection in inverters include unreasonable load distribution, component aging, line faults, etc. The solution needs to be adjusted according to specific reasons.
1. Unreasonable load distribution‌
Simultaneous activation of multiple high-power appliances may cause the total power to exceed the upper limit of the inverter, which may trigger the protection mechanism.
2.    Component aging or damage
The aging of internal components (such as decreased performance of capacitors and resistors) and poor heat dissipation can lead to abnormal power output, which may be mistaken as overload.  ‌
3.    Line malfunction
DC cable damage, poor contact, or aging of the circuit may cause abnormal current transmission and trigger protection.  ‌
4.    Start current surge
The current surge at the moment of starting motor equipment  may be mistakenly classified as overload.  ‌
solution:
1. Optimize load distribution
Avoid opening multiple high-power devices at the same time, and the single use power should not exceed the rated value of the inverter.
2. Check the circuit and components
Replace damaged DC cables or repair poor contact issues.
Clean the surface dirt of the components to ensure stable voltage input.
3. Heat dissipation optimization
Ensure good ventilation of the inverter and avoid working in high-temperature environments.
4. Equipment maintenance
Regularly inspect the aging of internal components and replace damaged parts if necessary.
Note: Please do not dismantle the machine without permission, otherwise it will be out of the warranty of Ktech.

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