ª Check The Composition Of The Refrigerant - Mitsubishi Electric CITY MULTI PUHY-P200YEM-A Service Handbook

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CHECK THE COMPOSITION OF THE REFRIGERANT(R407C unit only)
Start
Test run all indoor units.
Are all units operating
stably? (Note 1)
YES
Is the refrigerant
composition of OC
correct? (Note 2)
YES
Finished checking the
composition.
NO
NO
Check TH2, LPS and the CS
circuit block and correct any malfunc-
tions. (Note 3)
Is the
refrigerant composi-
tion of OC correct?
(Note 2)
YES
Finished checking the
composition.
Calibrate the refrigerant composition
of
- 180 -
NO
Check that
R407C is correctly
charged.
(Note 4)
YES
OC . (Note 6)
Finished checking the
composition.
YES
NO
NO
Recharge the refrigerant.
(Note 5)