Testing and Quality Assurance of Washing Machine Control Boards

As a core component that ensures the normal operation of washing machines, the quality of washing machine control boards directly affects the operational efficiency and lifespan of the equipment. At Tecoo, we conduct rigorous testing on every washing machine control board we produce to ensure consistent performance across various environments, providing our customers with the highest quality service and experience. This article will explore the importance of testing and quality assurance for washing machine control boards and how Tecoo implements a series of stringent tests.

1. ICT Testing

Choosing the right ICT testing instruments, we conduct comprehensive electrical testing of the controller to check the connectivity of the washing machine electronic board, ensuring there are no open or short circuits. Parameter testing is performed to verify the normal operation of components, and functional testing ensures the control board can correctly execute the input commands. After testing, we analyze the results and promptly address any issues, ensuring the control boards meet high-quality standards.

2. Functional Testing

The primary goal of functional testing is to verify whether the electronic control board can maintain normal operations under various working conditions. First, we establish an appropriate testing environment that meets the temperature and humidity requirements of the controller, using standard power supplies and connectors. Next, we simulate user operations using signal generators and record whether the control board performs functions such as washing, spinning, and draining as required. Additionally, faults like short circuits and open circuits are deliberately introduced during testing to assess the control board's ability to handle anomalies. Finally, Tecoo uses advanced testing equipment to ensure that each control board meets basic functional requirements, maximizing customer satisfaction.

3. Aging Testing

The purpose of aging testing is to simulate potential issues that the electronic control board may face during long-term use and to evaluate its stability under different environmental conditions. This primarily includes high-temperature and high-humidity tests, where the control board is placed in an environment with high temperatures and humidity for extended periods to accelerate aging. We also cycle the control board through varying temperature environments to test the performance of materials under thermal stress. Additionally, we simulate the vibrations that the control board may encounter during actual use to observe the stability of electronic components. Finally, we continuously power the control board while monitoring temperature and performance changes.

4. Online Inspection

At Tecoo, we set inspection points in every production process. This includes first-piece inspections, incoming material inspections, and material change inspections, as well as advanced equipment such as X-ray inspections and 2D and 3D optical inspection instruments. Inspections before and after the furnace effectively prevent human errors in material selection and verify materials during changes, ensuring that each step effectively avoids issues.

5. Full Inspection

At Tecoo, all of our products undergo 100% functional testing, typically including visual inspections, functional testing, electrical testing, aging testing, and pressure testing. These steps help identify welding defects, component damage, and functional anomalies, with our product pass rate reaching 99.9937%. Products that encounter issues after a period of use can be returned for repair at any time.

Tecoo is committed to providing high-quality washing machine control boards. Therefore, every control board undergoes multiple tests and inspections before leaving the production line. Additionally, Tecoo has a comprehensive quality management system that ensures each phase-from raw material procurement to production processing to final inspection-meets stringent industry standards and customer requirements.