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Posted by CJT on May 21, 2006, 8:53 pm
Doug Warner wrote:
> Starting to get warm in Atlanta, so I tested my 22-year-old Carrier SX
> A/C system. Performance is low. At 80 degrees outside, it can't cool
> the house lower than 74.
>
> I checked the charge level:
> (Condenser inlet air temp, across chart to suction pressure line, then
> down to suction line temperature. ) It's within 2 degrees of target
> using a Fluke dual thermocouple thermometer.
> (Suction line temp measured just before it enters the
> compressor/condenser unit)
>
> Temperature drop across the evaporator (if it matters) is 67.0 inlet,
> 51.2 outlet,. with a 75 degree outdoor temp.
>
> Temp difference across the condenser is about 17 deg.
>
> Never had any issues with it in the past 22 years.. Any thoughts on
> what else it might be?
>
> (If call a servicer, they'll probably just try to sell me a whole new
> system instead of fixing the old one..)
>
> --
> Email reply: please remove one letter from each side of "@"
> Spammers are Scammers. Exterminate them.
Look for leaky ductwork.
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