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unit heating instead of cooling

Posted by eddie on July 7th, 2000 02:11 PM
In reply to Central Air Conditoner by George Quinn on June 30th, 2000 08:56 PM [Go to top of thread]

Chances that the circuit board is the problem are quite slim. The reversing valve is designed to fail to heat...if you call for heat and have 24 volts at the reversing valve solenoid.....if 24 volts is present the valve has failed

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