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air conditioning

Posted By: Ray Snyder
Tuesday, 6 July 1999, at 9:44 p.m.

Over the weekend the condenser fan motor on my heat pump went out. I called my local HVAC professional to come replace it today. It seems when I got home I noticed that the fan he replaced ran much faster than my downstairs unit whereas they ran the same speed before. I checked the RPM ratings on both fans and the new fan was 1150 rpm and the old is 825 RPM. Later that evening I also noticed that there was little air flow coming from the ducts so I went into the attic and popped the cover on the evaporator and sure enough the coils were completely obstructed with ice. I also observed ice outside on the piping to the condenser. My question is this: Can the icing be attributed to the increase in speed of the condenser fan? Or do I have another problem? Thanks so much for your answer.

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