Samsung AVXC1H022 series Service Manual page 353

Reference Information
16. Ambient Sensor
Measure the outdoor unit temperature.
17. Double Tube Sensor
Use to calculate the degree of overcooling of the outdoor unit during cooling operation.
18. Suction Sensor
Use to calculate the degree of overheating of the compressor inhalation with the low pressure sensor.
19. Sump Sensor
Use to protect the compressor by measuring the compressor oil temperature.
20. Oil Valve Sensor
Distinguish whether there is equal oil operation between outdoor units by detecting oil movement between outdoor units.
21. 4 way Valve
Use for convert the cooling and heating.
22. Sub-cooler
Do the heat exchange of the overcooling liquid of the condenser outlet with the refrigerant of the compressor inhalation side
during cooling operation.
23. Oil Separator
Collect the oil to the compressor by separating the emitted refrigerant and oil from the compressor.
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