Hyundai Sonata: Air Conditioning System / Compressor Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Compressor Description and Operation

Description

The compressor is the power unit of the A/C system.

It is located on the side of engine block and driven by a V-belt of the engine.

The compressor changes low pressure and low temperature refrigerant gas into high pressure and high temperature refrigerant gas.

Variable Swash Plate Compressor

The compressor has a swash plate that rotates to reciprocate pistons, which compress refrigerant.

The variable swash plate compressor controls the swash plate angle to change the refrigerant displacement. It achieves precise cooling capability control in accordance with vehicle interior and driving conditions.

The externally controlled variable swash plate compressor changes the swash plate angle by an ECV (Electric Control Valve) in accordance with an electrical signal from the heater & A/C control unit.

This enables stable temperature control and improved driving sensation.

ECV Control Diagram

Refrigerant Line Repair procedures

Replacement 1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off. 2. Disconnect the nega ...

Compressor Components and Components Location

Components Location 1. Comperssor ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: AUTO HOLD
This feature keeps the brake applied when the shift lever is in D (Drive), N (Neutral) or Manual shift mode with the feature enabled and when the brake pedal has been depressed to stop the vehicle. To apply: 1. Press the [AUTO HOLD] switch. The AUTO HOLD indicator will illuminate white and the s ...

Hyundai Sonata LF 2014-2019 Owners Manual: Various driving situations, which you may encounter in SMART mode
The driving mode automatically changes to ECO mode after a certain period of time, when you gently depress the accelerator pedal (Your driving is categorized to be mild.). The driving mode automatically changes from SMART ECO mode to SMART NORMAL mode after a certain period of time, when yo ...