Question about Amana Haier AP125HD Air Conditioner
This sounds like a Blend Door problem. The problem is that the blend door in the plenum is stuck in the A/C position and will not reposition to allow heat.
There are two possible issues.
1: The Acuator has snapped off (plastic breaks)
2: The Blend Door is broken (plastic hinge broke)
There are related articles to fix both of these conditions
Posted on Dec 04, 2008
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