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Just blowing air not cooling, outside unit doesn't seem to be working but inside just blowing air

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First off, check power:disconnect box outside may have fuses,then check power at fuse box.If you have power(220 volts) then check for 24 volts at T-stat line.Also, make sure T-stat is set to A.C.With power on go outside and listen to condenser unit.If fan is rotating listen for humming .If it is not running, it could be a bad contactor or a bad or capacitor .If it is running check after 5+ minutes if warm air is coming out of the outside unit.Also, wash the condenser unit:start by spraying the hose about 45 degrees downward ,going side to side,and down on all sides.Do Not use High pressure hoses,it will bend coil fins.After it runs for about an hour,or so, go out and see if low pressure line(big one) is sweating and cool, and high pressure line (small line) is warm.

Posted on Feb 23, 2010

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