I took the housing off a portable AC because the plug end circuit breaker pops immediately when you try to reset it. Inside the box that houses the control board and wire junctions I found this little component that I believe is a fuse. Behind it is a line with a Z that breaks it. Is this a fuse or a resistor? Either way I tested it for ohms with a multimeter and it registered 0 so I think it may be part of the issue? I think it maybe be either p01p02 or p03p04?