zzzzzzzzzzzzzzzzzzzzzzz! just breifly viewed all the previous posts,
1 is crankcase heater working? was it energised for 24hrs prior to starting?
2 were all the electrics changed?
3 was a suction burn out drier fitted?
4 was the tev orifice inspected to ensure the inlet gauze is clear?
5 you say it ran for 4 minutes before it failed-that tells me when it was charged liquid was dumped into the system washing the oil out the sump !
was this repair a cash job?ie throw the comp in ,take the money and run?
have u spoke with copeland technical. i think i have helped u with ur lil dilemma