Mitsubishi Electric CITY MULTI PUHY-P108 Service Handbook page 199

[ VIII Test Run Mode ]
Start
SW2-4 ON
Put all indoor units in the test run mode
and run the units in cooling mode.
Has the initial start-up
mode been completed?
Has it been at least
30 minutes since start up?
Does the following hold true?
TH11 100 C [212 F]
Has the compressor
operating frequency
stabilized?
Note 2
SH
on all indoor units.
Does the following hold true?
5K [9 F]
Note 1
Does the following hold true?
10K [18 F] SC16
Note 1
Does the following hold true?
TH11 95 C [203 F]
Adjustment complete
SW2-4 OFF Note 4
CAUTION
Do not release the extracted refrigerant into the air.
CAUTION
Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.
If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and may
result in performance loss.
NO
NO
YES
Gradually add refrigerant from
NO
the service port on the low-
pressure side.
YES
NO
YES
NO
5K [9 F]
YES
Has the LEV opening been
stabilized on all indoor units? Note 1
YES
Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy.
NO
SC11
YES
Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy.
NO
30K [54 F]
YES
Does the following hold true?
30K [54 F] SC16 ?
YES
Keep the unit running for 5 minutes after adjusting the refrigerant amount to
determine its adequacy.
NO
YES
YES
NO
*Refer to the previous page for Note 1-4 in the chart .
Gradually add refrigerant from the service
port on the low-pressure side
NO
Gradually draw out refrigerant from the
service port on the low pressure side.
Gradually add refrigerant from the service
port on the low-pressure side
Gradually add refrigerant from the service
port on the low-pressure side
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