July 2014 Tech Challenge Answer

A split air conditioner that has been retrofitted from R-22 to R-438A (M099) with a TXV metering device (and receiver) has a customer complaint of “warm, no cooling” The condensing unit appears to be running 100% of the time. What are the “possible causes” (Note: The unit was retrofitted per the manufac
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Ducks Quack, Eagles Soar!

We all get tons of information passed on to us from people we know and often from people we don’t. We delete most of it without reading. The following story, however, was passed on to me a few days ago. The article was entitled “Ducks Quack, Eagles Soar!” by Harvey MacKay. Every company needs to differe
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