What should you do if an ohmmeter reads infinity ohms when checking a start capacitor?

When an ohmmeter reads infinity ohms when checking a start capacitor, it indicates that the capacitor is open or faulty, meaning it has failed to function properly. In this scenario, replacing the start capacitor is the appropriate action to take, as an open capacitor cannot store or release the required electrical charge needed for the compressor start cycle.

In many cases, when a capacitor fails, it can also affect the start relay that works in conjunction with it. Therefore, replacing both the start capacitor and the start relay can ensure proper functionality and prevent future issues in the system. While it may be possible to check and clean terminals or inspect wiring connections, those actions would not address the underlying problem of a failed component. Adjusting the voltage supply is not a viable solution either, as an infinite reading confirms a lack of continuity, directly indicating the capacitor needs replacement. By replacing both components, the risk of further electrical issues or breakdown in the system is mitigated, leading to reliable operation.