AC Outdoor Compressor Won't Start, Just Clicks: Quick Fix Guide

ac outdoor compressor wont start just clicks

AC Outdoor Compressor Won’t Start Just Clicks

Possible Causes of the Clicking Sound

When your AC outdoor compressor won’t start and just clicks, it can be frustrating and indicative of several potential issues. One common cause is a faulty start capacitor. The start capacitor provides the initial burst of energy needed to get the compressor motor running. If it’s not functioning properly, the motor may attempt to start but fail, resulting in a clicking sound. Another possible culprit is the compressor relay, which is responsible for sending power to the compressor. A bad relay can prevent the compressor from receiving the necessary electrical current, leading to repeated clicking noises.

Diagnosing the Problem

To diagnose whether the start capacitor or the compressor relay is the issue, you’ll need to perform some basic checks. First, ensure that the power supply to your AC unit is stable and that there are no tripped circuit breakers or blown fuses. Next, locate the control box on the outdoor unit and open it to access the start capacitor and relay. Visually inspect these components for any signs of damage, such as bulging capacitors or burnt relays. You can also use a multimeter to test the start capacitor for its capacitance value and the relay for continuity. If either component fails the test, it will likely need to be replaced.

Other Potential Issues

In addition to the start capacitor and relay, other factors can contribute to the clicking problem. A faulty thermostat might be sending incorrect signals to the outdoor unit, causing it to try to start without actually engaging the compressor. Check the thermostat settings and ensure it is functioning correctly. Electrical connections can also become loose or corroded over time, disrupting the flow of power to the compressor. Inspect all wiring and connections for any signs of wear or damage, and tighten or replace them as needed. Finally, if the compressor itself is damaged or worn out, it may not start even if all other components are working properly. This is a more serious issue that typically requires professional repair or replacement.