Bus AC Low Pressure Fault Diagnosis and Repair Bus AC low pressure is a typical comprehensive fault signal, directly reflecting insufficient energy supply at the “suction end” of the refrigeration cycle. The first report in the 2025 *Commercial Vehicle Refrigeration System Diagnosis Yearbook*, titled “Multi-factor Coupling Analysis and Hierarchical Diagnosis Method for Low-Pressure Side Pressure […]
Analysis and Solutions to Bus AC Pressure Problems The stable operation of the bus air conditioning system is directly related to passenger comfort and driving safety. Abnormal pressure is a comprehensive fault signal, often involving multiple subsystems. This article draws on the research framework of the article “Fault Modal Analysis of Thermal Management System for […]
Bus AC refrigerant leaks are the most common fault leading to refrigeration performance degradation and even failure. While the symptoms are simple, the root causes are complex, usually pointing to deep-seated defects in system design, manufacturing, use, and maintenance. A 2025 supplement to the *Journal of Automotive Engineering*, titled “Research on Sealing Technology and Reliability […]
Bus AC not cooling – A Comprehensive Troubleshooting Guide Bus AC not cooling is a frequent summer malfunction, with complex causes that are rarely due to a single component. According to the latest maintenance data from the transportation industry in 2025, over 60% of “not cooling” complaints stem from the combined effects of multiple factors. […]
Spanish 
English