Troubleshooting
Samsung Electronics 403
1. Inspection Method
4-4-80 Liquid Compression Prevention Control
Are the SUMP sensor
and the discharge sensor are properly
connected/attached?
Check the failure in
liquid bypass valve and
4way valve.
Check the normal EEV operation
of the main EEV EVI.
Check and change the discharge valve leakage.
Re-check the sensor connection/attachment.
No
Normal
Normals
Yes
Breakdown
Breakdown
Resolve the relevant EEV problem.
Resolve the relevant valve problem.
Outdoor Unit Display
Indoor Unit Display
-
Judgment Method • SUMP temperature decrease & DSH < 5°C 25 min.
Special Cause
• EVI EEV and super cooler, liquid bypass valve leakage, refrigerant overcharge, indoor unit EEV leakage,
direct connection between indoor liquid pipe-gas pipe, faulty main EEV, and failure to operate compressor
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