Even if the faulty part is identified, why is the cause unknown?
When an air conditioning unit malfunctions, while it may be clear "where it broke," identifying "why it broke (the root cause)" is difficult. In response to the concern of "even after repairs, it recurs," we will explain the structural reasons that make it hard to determine the cause and the countermeasures.
1. Five reasons why it is difficult to determine the cause of failure
Failures arise from multiple, rather than single, factors.
A. Overlapping multiple factors: Issues such as dirt, aging deterioration, and overload combine to lead to failure.
B. Lack of records: There is insufficient operational history data, such as current values and pressure, before and after the failure.
C. Limitations of error codes: Codes only indicate "what happened," and do not specify the cause.
D. Differences in environmental stress: Factors like oil smoke, salt damage, and prolonged operation vary the burden on the equipment depending on the usage environment.
E. On-site priority for recovery: On-site, "early recovery" is prioritized over identifying the cause, often delaying analysis.