Check your filters. Some residential units have a mesh between the squirrel Cade fan and the fire box. Mine got partially block by an errant piece if insulation

Check your filters. Some residential units have a mesh between the squirrel Cade fan and the fire box. Mine got partially block by an errant piece if insulation that was restricting air flow and causing the unit to short cycle. I too thought it was a bad switch. The HVAC dude said my condenser coil was clogged and I needed a new unit. One disassembly and cleaning later and it runs like new. When taking things apart take pictures showing where plugs wires and screws go.