u Upon arrival spoke with customer. We walked downstairs to indoor unit. Ceiling where question of water stain is was still up and I explained I could not see if it was from the unit lines or the bathroom above if we could not see it. Customer has guys pulling it down. Started checking over system while they do that. Blower and coil are clean at this time. Wires are tight. Drain is clear. Safety’s are working. Heater kit is working well. Unit is level. Uv light is still working. With ceiling down I put a lot of water in the condensate pump and let it run awhile. No leaks in line going outside and looking at the water marks on the wood it looks like water came from bathroom upstairs. Showed customer. Went outside coil was dirty so cleaned coil. All wires are tight. Contacter and capacitor checked within specs. Fan and compressor amped within specs. Refrigerant levels checked within specs. Disconnect wires are tight. Surge protector is still in working order. Right now everything is clea