Air Conditioners
Why Is My Outside AC Unit Humming but Not Turning On?
By HVAC.com•March 6, 2024Get a fair quote
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Question:
Why is my outside AC unit humming but not turning on?
Answer:
An AC unit humming but not turning on is often caused by a faulty capacitor, a tripped circuit breaker, or a malfunctioning compressor. When the AC capacitor fails, the fan motor does not receive power, resulting in a noticeable humming or buzzing sound. It's advisable to seek assistance from a qualified HVAC contractor for inspection and necessary repairs.
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