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Message: <blockquote data-quote="sh00ter" data-source="post: 2758533" data-attributes="member: 24531">Newer York unit still under warranty, fan on top of the unit was buzzing and coming on repeatedly over and over again constantly...the buzz reminded me of the sound when a capacitor is bad...it dimmed the lights in the house each time it turned on and then ran for 30sec and then repeat...this went on for a long time (days, maybe weeks)but at other times of the day it seemed to run normally and when the guy came to look at it, it didn't do it. He said (based on my description) it sounded like it was bouncing off the high-side pressure switch but I myself wonder why would it do that if it shut off almost immediately after it would start. I would think the pressure would take longer to build up...the house was cool the whole time this was going on so it still worked but was annoying and undoubtedly all that struggling to start the fan was using some electricity.Their solution was to swap the expansion valve for an orifice tube but they said we'd lose some efficiency...this doesn't seem right to me that we should have to accept that?...They also told my wife that they had checked the freon and stuff and it was okay; why would it bounce off the high-side switch if it wasn't over charged? It hasn't been that hot and this "fix" was done over a week ago anyway so we were barely into summer. I need experts to chime in and either make me feel better about what they did, or tell me what to do. I know some about automotive A/C but not too much about home.Thanks</blockquote>

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