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C70: AC fan sound very loud and "rumbles "

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Old Jul 25th, 2012, 08:55   #1
LJD
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Default C70: AC fan sound very loud and "rumbles "

Sisters C70 AC is making a rather annoying "rumbling " sound when on full speed . Blows cold etc , but the noise of the fan is far louder than it should be

any ideas?

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Old Jul 26th, 2012, 09:33   #2
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top of the day !
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Old Jul 27th, 2012, 08:41   #3
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Fan motor bearing failure?
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Old Jul 27th, 2012, 10:49   #4
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could be the main engine fan itself as they are suppossed to come on when using AC.
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Old Jul 27th, 2012, 13:52   #5
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Like all 'sounds" its hard to describe well. Bearings it could be..Sounds like the fan itself could be "off centre " etc and drones away making a "Hum" far louder than it should

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