Tag Archives: compressor

I must be doing something right!

Back in April 2011, I started writing on this blog site as a way to help my local contractors and dealers. Most of the posts were based on issues these persons were experiencing and this was a good forum to … Continue reading

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Compressor Electrical Diagnostics — Revisited

In reviewing posts from time to time that have the most views i feel it is a good thing to bring back a post that was previously written.  The following was originally written back in 2011 but there have been … Continue reading

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SUPER-HEAT as a Diagnostic

Whether you are working on a 1½ ton unit or a 50-ton unit, the principles of the refrigeration cycle is the same.  The most important thing to remember about compressors is that they are VAPOR PUMPS. Compressors do not like … Continue reading

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Spring Cleaning — Completing the Maintenance

In this last part of my Series on “Spring Cleaning” (maintenance), we will now actually start the unit and do some checks with the unit operating.  You need to remember, SAFETY IS ALWAYS FIRST  when working on any live equipment. Make … Continue reading

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Spring Cleaning — Part 2

It has been a week since my last post, Day Light Saving started, and the temperature has been getting warmer.  At least around Chicago, the temps have managed to get into the 50’s.  Now, this temperature is still not where … Continue reading

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Spring Cleaning — Part 1

Well, here it is March 3 which places us in meteorological SPRING. (And, for those in the U.S., don’t forget that Day-light Savings Time starts THIS WEEKEND ). I know that those of us up north and out east are still dealing with … Continue reading

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TXV Issues — UPDATE

The purpose of this post is to provide UPDATED service guidance to address erratic thermal expansion valve performance which results in observed high superheat conditions, at times coincidental with compressor failure. Reports of failures of this type have been industry wide … Continue reading

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TXV Issues?

The purpose of this post is to provide service guidance to address erratic thermal expansion valve performance which reportedly results in observed high superheat conditions and at times, coincidental with compressor failure in residential and commercial split and package A/C & HP … Continue reading

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Subcooling Can Aid in Troubleshooting

Let’s take a trip back to the basics to understand subcooling in the first place. In a refrigeration cycle, the condenser converts a super-heated high pressure gas into a high pressure liquid so it can be used by the evaporator … Continue reading

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Summer and Humidity are Officially Here!

This past weekend saw the official start to summer. Of course, when we mix the 80+ to 90+ degree temperatures with a lot of rain, the humidity goes off the charts. One of the best things about air conditioning is … Continue reading

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