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Originally Posted by wmflyfisher
Wow thanks for that. Helpful if that’s the issue. I just investigated the issue more and determined that the heat does blow in the floor when you switch it to floor mode but it doesn’t shut the face vents. They remain open. The defrost vents never open though... I’m puzzled on how to even diagnose what the issue is...
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Can you hear anything when you switch the flows? If it only blows in one direction despite selecting different modes it could be as simple as the HVAC actuator.