Upon arrival homeowner stated that they smelled something burning, upon inspecting indoor disconnect, terminals on disconnect were completely burnt up, explained to customer that we need to get power to indoor air handler and that there may be other issues with system, replaced disconnect as well as electrical whip, after replacing disconnect and electrical whip, outdoor unit would not turn on, checked refrigerant levels and found that unit was completely flat in refrigerant, also found that upstairs damper motor is stuck in the closed position, unwired and opened upstairs damper, damper will stay open until damper is replaced. recommended updating system due to the issues going on, scheduled install supervisor to come out Friday 2-27-26 12-3PM, customer did sign up for homecare and still has 3 visits available, also recommended indoor air quality either bluetube or apcox. Unit also does not have wet switch installed.