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When using my Danby DPAC11010 Portable AC unit I am getting a high pitch whistling sound when the AC portion is blowing when it swaps to Fan mode this stops.

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The noise is from compressor.Its getting blocked or the coils in the unit have got dirty.it needs to be cleaned.At the back of the unit there is compressor.Clean the filter.the air filter and check. When the unit works on fan mode the compressor does not operate.When on ac mode the compressor operates.So the problem is related to compressor.Either its dirty and needs cleaning or its getting weak and needs to be replaced. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Aug 05, 2010

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