Based on our findings today, it might be time to think about getting a brand new system. Main floor- compressor is bad. And Txv. Running at over 33 amps on full load when manufacturing calls for 26 max. Cap is poor contactor is pitted. Plenums in poor shape. Do not recommend repairs as it it over 15 yrs old and has no warranty. Fan motor is bad as well. Seized up. Does not start unless it’s manually pushed. Basement. Compressor is out. As soon as it turns on pressure rockets up to over 700 and cuts off after about 3 seconds. There is no high and low pressure switches on this unit.