i am a service tech and i am having some troubles narrowing down why this compressor is so noisey on start up and in defrost.. it is also under heating and uderamping
luxaire hp ho5bo36f1
this is a two stage 3ton heat pump and it is mated with a matched cased coil and txv
dist psi: 245
suct psi: 75
suct temp: 23
liq psi: 230
ive installed several of these heat pumps and all except this one are very quiet.