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A/C compressor clicks on and off 700

posted by  PaulSe on  Sun Feb 17 03:28 CST 2002
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We are in the middle of winter in Ohio but for some reason, the a/c compressor kicks on and off occasionally while the engine is running (controls in the car are definitely on heat). This is my first Volvo (1988 740 GLE non-turbo) and none of my other cars exhibit this behavior. Is this normal, maybe to keep the compressor clutch active to prevent freeze-up? Or is this yet another electrical problem to trace? TIA.








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A/C compressor clicks on and off 700

posted by  Steve on  Sun Feb 17 04:47 CST 2002
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last visit: Fri Oct 24 07:16 CST 2014
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In defrost, this is normal. In "heat" (no defrost), it is not normal and points out a possible electrical problem in your heater control unit on the dash.








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A/C compressor clicks on and off 700

posted by  someone claiming to be Toyota Tom on  Sun Feb 17 03:51 CST 2002 [RELATED]

Because if it is in defrost mode, the comp will kick occasionally to dry out the air headed for the windshield.

No matter what, you should cycle the A/C for a few minutes every month in the winter to circulate oil and keep the seal wet.







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