Have a 14 year old residential Carrier model 38txa
Outdoor compressor and fan work fine.
Blower in attic horizontal air handler just rotates about a 1/4 turn clockwise and counterclockwise continuously for a few minutes and then stops. When turned off and on again then the blower repeats the 1/4 turns.
Pan is about half full of water.
What do you think the problem is? What can I try?