Contents Wiring diagrams Section: Automatic HVAC System All sections

Heater & Air Conditioning System: Overview Nissan Versa II

Component Description

ComponentDescription
EvaporatorThe mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower motor. The air is cooled by the heat by evaporation.
CondenserCools refrigerant discharged from compressor, and transforms it to liquid refrigerant.
CompressorIntakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.
Refrigerant pressure sensorRefer to " REMOVAL AND INSTALLATION ".
Liquid tankEliminates foreign matter in refrigerant, and temporarily stores liquid refrigerant.
Expansion valveTransforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing function.

Perform Oil Return Operation

CAUTIONIf a large amount of refrigerant or oil leakage is detected, do not perform oil return operation.
  1. Start the engine and set to the following conditions. Engine speed: Idling to 1, 200 RPM A/C switch: ON Fan speed: Maximum speed set Intake door position: Recirculation Temperature setting: Full cold
  2. Perform oil return operation for approximately 10 minutes.
  3. Stop the engine.
  4. Oil return operation is complete.