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Old 08-12-2006, 08:40 AM
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The room air temp is 77degF and the air coming out of the evaportor is 63degF so the differential over the evaporator coil is 77 - 63 = 14degF which is correct for a properly running system.

If the differential over the evaportor was to increase beyond 14degF it would be indicating a starved evaporator.

The condensing coil has been rinsed out with water but the high side pressure is still a bit higher than it should be, which indicates the condenser coil should be properly cleaned with a foaming coil cleaner.

Based upon the pressure and temperature readings posted it appears that the system is a bit too small. Either it was initially undersized or perhaps there has been an addition to the structure that increased the load.
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