Samsung AM032MNQDCH/AA Service Manual page 320

Troubleshooting
4-4-78 Liquid Compression Prevention Control
Outdoor Unit Display
Indoor Unit Display -
Judgment Method • SUMP temperature decrease & DSH < 5°C 25 min.
• EVI EEV and super cooler, liquid bypass valve leakage, refrigerant overcharge, indoor unit EEV leakage,
Special Cause
direct connection between indoor liquid pipe-gas pipe, faulty main EEV, and failure to operate compressor
1. Inspection Method
Are the SUMP sensor
and the discharge sensor are properly
connected/attached?
Check the normal EEV operation
liquid bypass valve and
Check and change the discharge valve leakage.
4-120
Yes
of the main EEV EVI.
Normal
Check the failure in
4way valve.
Normals
No
Re-check the sensor connection/attachment.
Breakdown
Resolve the relevant EEV problem.
Breakdown
Resolve the relevant valve problem.
Samsung Electronics