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What is the rumbling noise from your central air conditioner when it shuts off?
Wiki User
∙ 14y ago
If you have a scroll type compressor, at shutdown the compressor stops pumping and the hi & lo refrigerant pressures equalize, breifly spinning the compressor backwards until they are fully equal. This is normal for these type compressors.
Wiki User
∙ 14y ago
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What causes banging noise when home air conditioner shuts off?
After putting up with the same noise for about a week I researched online and found a suggestion that worked! Change the filters! That's it! That's all it was!
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It might be on energy saver mode!
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