Which outcome results when humidity reaches 100% in air conditioning system evaporator coil?

💡 Explanation

When humidity reaches 100%, water vapor transitions to liquid via condensation on the cold evaporator coil, and if the coil is below freezing, the condensate transitions to solid ice which acts as an insulator which reduces conductive and convective heat transfer. Therefore ice formation results, rather than superheating, compressor failure, or overpressure which require other system malfunctions.

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