Here are the diagrams and repair parts for Official GE AT505FBN3 room air conditioner, as well as links to manuals and error code tables, if available.
There are a couple of ways to find the part or diagram you need:
Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.
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#NI
All parts diagram
Part #WJ87X240
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Part #WJ88X216
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Part #WJ28X509
The manufacturer no longer makes this part, and there's no substitute part
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