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Have 4 yr. old lennox r410a split system heat pump that reversing valve is sticking halfway. can turn unit off and back on and system operates normally for a few cycles then sticks halfway again until you turn unit off and on again. we have already replaced reversing valave and problem still exists. also replaced solnoid coil at time of r.v. replacement. have checked and ensured 24 volts at coil.

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Double check the txv

Posted on Aug 05, 2008

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