Ok the the back-story is the chiller had 0 maint.
Apparently some retards cleaned the cond "air cooled" coils w/ highly acid coil cleaner and left it on way to long which killed the coil, they prob were messing with the navigator and changed the fan seq. Then attempted jump out the fan relays using misc outputs and then bypassed the hi press sw. and then "not kidding" used a resistor on the discharge temp sens! and dumped the charge via press rlf valves, So new press rlf valves repaired press sw ect ect unit is as it should.
Unit runs for a day or two and goes off on alarm T070 = Discharge gas thermister fail or "its not bad just replaced checked ohm'ed out" or temp >210 deg f for 30 seconds yeah it's that one!
The unit is short about 15/20 lbs making the discharge gas hot but can't add gas head is 250psi r-134a and it's a screw! The coils are as clean as their going to get... Any ideas would be greatly appreciated. YEAH I know they should replace the coils units 5 years old. It's an EXV in the econimizer shells btw, all fans r 100%
Carrier screw chiller 30gxn version 5
suction psi= 70
sat suction= 41.2
Econ press= 67.8
disch psi= 253
sat cond temp= 147.3 F
Discharge temp = 190 deg F <------every once n a while >210 for 30 seconds.