How to Check the Condition of a Compressor?
1 Answers
Compressor's resistance between RS equals the sum of SC and RC resistances, which can be used to determine its condition. Below are extended details: 1. To assess the compressor's condition, first identify its three terminals: S, R, and C. S is the start winding, R is the run winding, and C is the common terminal. 2. Then, use a multimeter to measure the resistances. The sum of SC and RC resistances should equal the RS resistance under normal conditions. 3. If the resistances deviate significantly or show no reading between any two terminals, the compressor is damaged. 4. Even if the multimeter readings appear normal, internal short circuits may not be detected. A simple method is to check for power using the multimeter. If power is present but the compressor doesn't start, replace the start capacitor.