System Refrigerant Shortage - Samsung DVM Series Service Manual

8
Troubleshooting

8-5-2. System refrigerant shortage

Phenomenon
After operation over 40 minutes with the test
operation in cooling mode.
• E-valve : 4 Room-479 > 250, 1 Room-216 < 250
Over 2 rooms 479Step Maintain
• T-discharge : 112˚C > 110˚C
Check method
• First check refrigerant leakage at any place if there is no
leak.
• Charge a some refrigerant to the outdoor unit by use of a
scale, refrigerant tube.
• After about an hour operation after refrigerant charging,
check the S-NET. And assure whether it is out of the
above conditions.
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