If its hanging out of the front, I would think that its a broken wire off one of the sensors. There are usually 2 sensors on the front. 1 measures room air temperature, (Air sensor)and the other measures the refrigerant temperature in the pipes (Pipe sensor) The air sensor has a small bulb on the end of it and is usually clipped onto the front of the coil or the front panel.. The pipe sensor has a small copper tube on the end which slides into a hole or sleeve on the side of the evaporator coil.
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Kind of sounds like the temperature probe.
If its hanging out of the front, I would think that its a broken wire off one of the sensors. There are usually 2 sensors on the front. 1 measures room air temperature, (Air sensor)and the other measures the refrigerant temperature in the pipes (Pipe sensor) The air sensor has a small bulb on the end of it and is usually clipped onto the front of the coil or the front panel.. The pipe sensor has a small copper tube on the end which slides into a hole or sleeve on the side of the evaporator coil.