i change out a unit for customer,it is 2.5 tons lennox r410 heat pump,custermor said it wont do the heating or cooling,i take home hook it up vacuum,pump in freon,start with heating mode,both high and lowside have same pressure,and compressor is running amp draw from compressor is normal about 3amp,4way valve all pipe is about same temp i feel it by hand,when i switch it to cooling mode,it does the same thing no temp change,and pressure is the same also(about 145 lbs)and 4 way valve does click and have 26 volt to it,i test selnoid valve with ohm it read 15,is that ok,and when i running i heating mode i jump the wire to o and 4 way valve make sissling sound,is that mean reversing valve is shifting?so it maybe the compressor mechnicaly bad?cause winding reading is ok?