Evaporator pressure regulator control and diagnostics
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United States of America Patent
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Mar 2, 2010
Grant Date -
Feb 14, 2008
app pub date -
Oct 18, 2007
filing date -
Mar 15, 2004
priority date (Note) -
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Abstract
A method includes cycling an electronic evaporator pressure regulator valve fluidly coupled to a refrigeration circuit to regulate flow through the electronic evaporator pressure regulator valve and sensing a current drawn by the electronic evaporator pressure regulator valve during cycling of the electronic evaporator pressure regulator valve. The method further includes determining a valve condition of the electronic evaporator pressure regulator valve based on the sensing.
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