Thread: Confirm this: AUX pump makes monovalve work better
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Old 06-29-2007, 10:43 PM
SGT John SGT John is offline
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Join Date: Mar 2007
Location: Tampa, FL
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Quote:
Originally Posted by tangofox007 View Post
Yes. The monovalve operates on system voltage. When the CCU is in the "Off" mode, it provides a "hard wired" ground path so that the monovalve remains closed. In the "Defrost" mode, the ground path is broken so that the monovalve remains fully open. In the other three modes, the ground path (and therefore the monovalve) is controlled by the Electronic Unit for Temperature Control, a solid state device separate from the CCU.
can you tell us more about the EUTC? Where is it located? Do you have pictures? Where does it get the data to decide what to do with the monovalve?
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