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The compressor cuts on when the weather is warm

The ducane unit is a three ton unit operating off of R22 also its a single phase. The contacts work the fan works and I have 24 volts on the t-stat. Every now and then the compressor cuts on maybe once a week when. I need a list of things to check for

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Hello,

Do you have a humidistat or a setting on you thermostat to regulate humidity? that would do it regardless of the temperature.

other then that, the only thing that can close that contactor to run the compressor is the t-stat or loose wire/short of the yellow control wire with the red 24V.

Benge

Posted on May 31, 2009

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Posted on Jan 02, 2017

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Here are a few ways to calculate your BTU's.
Get ready to use that algebra you thought you'd never use.
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BTU's air heat = difference in temp. ( ∆T ) x 1.08 x CFM
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