How To Isolate The Problem: Notes
To diagnose an air conditioner problem in the shortest time and with the least effort, it is essential to follow a logical service procedure. Time spend in conducting a system functional performance test and analyzing the defect in order to isolate if to a specific control function area will be repaid in reduced repair time. A recommended diagnosis procedure follows:
- Attempt to get an accurate, detailed description of the system malfunction. This will help locate the problem area as testing procedures are followed.
- Confirm system defect by operating system with engine at normal operating temperature and engine. RPM. at 1000 or higher, then perform the following System Functional Test in exact order shown. Set selector lever and temperature dial as indicated, then observe system for proper response: