Trane RTHD

RLC-SVD05A-EN 53
Compressor Capacity - RTAC
.
Table 9. Possible Causes to Loading Problem
Possible Operation
Recorded
Measurement Load Unload Hold
Operating properly Piston Pressure increase decrease remain constant
Amp Draw increase decrease remain constant
Stuck piston Piston Pressure increase decrease remain constant
Amp Draw remain constant remain constant remain constant
Leaking load solenoid,
internal leak or leaking
piston
Piston Pressure increase may drop initially but
will increase as soon
as the unload is de-
energized
increase
Amp Draw increase may drop initially but
will increase as soon
as the unload is de
energized
increase
Leaking unload solenoid Piston Pressure remain constant or
decrease
decrease decrease
Amp Draw remain constant or
decrease
decrease decrease