MAHLE RTI RHS900 - Manual (Page 48)

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Appendixes
C:\RHS Computer Files\Instructions\RHS\GB\642-40\0012B-01.doc 1997.09.11
RHS 900
Test - 5:
High pressure Approx.
19 - 20 bar
Low pressure Approx.
2.5 bar
Fault/Problem Symptom Possible cause Remedy
Unacceptable
refrigeration Ice or moisture on
hoses on low
pressure/suction side
of A/C unit Expansion valve
defective or sensor
placed incorrectly.
Expansion valve opens
too much. Check expansion
valve sensor
placing.
Replace expansion
valve.
Test - 6:
High pressure Approx.
7 - 10 bar
Low pressure Approx.
4 - 6 bar
Fault/Problem Symptom Possible cause Remedy
A/C unit does not
refrigerate Pressure on low-
pressure side too
high or pressure on
high-pressure side
too low Internal compressor
leakage Repair or replace
compressor