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Capacitors are a small cylinder object that helps store energy. This sends a shock to help start the motor or help keep the motor running. Capacitors work hand in hand with compressors, blower motors, and outside fans found in the air conditioner.
Use a voltmeter to check if the air conditioner capacitor is running properly. Using a voltmeter helps determine if there is a blown capacitor. However, this can be done just by listening to the unit. Listen to hear if there is any humming noises or look to see if the fan is spinning. If the AC is still humming, but the fan is not spinning, this can be an indication there is a capacitor issue.
Capacitors withstand damage from power and can also wear down to where they will not hold a charge. When a capacitor begins to fail, normally individuals will begin to hear a clicking noise. However, if the motor completely stops working, a ac repairman will need to be called.
When a capacitor stops running, the motor will still try to kick on, but instead it will make a humming noise. If the humming continues, the motor can burn out and will need to be completely replaced.
Capacitors that become weak and are connected to the compressor can go into what is called “hard starting.” This is when the ac will try to turn on, but then shut back off. This causes a lot of pressure on the compressor and other parts within the ac unit and eventually the system will need professional attention.
In many cases, AC professionals will replace the capacitor that is causing the issue. Individuals who do not have proper knowledge on how to replace an ac capacitor should not work on them alone. Since oil can leak from broken or damaged capacitors, this can become a dangerous job.
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