Heating, air conditioning and ventilation Hyundai Sonata 4

Safety measures and features of maintenance and repair
Scheme of the air conditioning system. General security measures 1. R-134a refrigerant is a clear, colorless substance in both liquid and gas phases with a high...

Troubleshooting
Before replacing and repairing the components of the air conditioning system, check for a malfunction, check what it can be associated with (refrigerant, air flow,...

Basic checks and adjustments — connecting the measuring manifold
Attention: when connecting the measuring manifold, observe the safety precautions. 1. Close both valves on the measuring manifold fittings. 2. Connect the charge hoses...

Pumping out refrigerant from the air conditioning system
1. Connect the gauge manifold hoses to the service fittings of the vehicle's air conditioning system. 2. Place a clean rag under the open end of the gauge manifold...

Vacuum system
Note: evacuation of the air conditioning system must be performed every time after its depressurization. Vacuuming removes air and moisture that may have entered the...

Preparing the refrigerant bottle for charging the system
1. Before installing the valve on the cylinder, turn its handle counterclockwise until it stops. 2. Set the valve jam nut to the top position by turning...

Charging the air conditioning system with refrigerant (in gaseous state)
Note: This procedure charges the air conditioning system with refrigerant in the gaseous phase through the low pressure service port. Only installing the cylinder in a...

Charging the air conditioning system with refrigerant (in liquid state)
Note: This procedure charges the A/C system with liquid refrigerant through the high pressure service port. The refrigerant bottle in this procedure must be installed...

Checking the efficiency of the air conditioner
1. Connect the measurement manifold to the system. 2. Start the engine and set the operating mode to 2000 rpm. Turn on the air conditioner, set the temperature control...

Locating refrigerant leaks
Note: This check is performed if a refrigerant leak is suspected or if work has been done to remove components or loose fittings, pipes and hoses. For proper use of the...

Procedure for returning compressor oil to the compressor
The oil used to lubricate the compressor circulates throughout the A/C system only when the compressor is running. To check the amount or add compressor oil to the A/C...

Checking the amount and adding compressor oil to the system
Note: Before adding compressor oil to the compressor, check the amount of compressor oil inside the compressor. When replacing any component of the system or if...

Checking the system with a measuring manifold
Verification procedure 1. Connect the measuring manifold to the air conditioning system. 2. Check the system status under the following conditions: A) The air...

Air conditioning piping
Removal of pipelines of the air conditioning system. 1 - evaporator and heater block assembly, 2 - drain hose, 3 - expansion valve, 4 - bolt "A" expansion valve...

Compressor and electromagnetic clutch
Removal and installation of the compressor Removing the compressor. 1 - compressor, 2 - compressor mounting bracket (G4JP and G4JS engines), 3 - bolt. 1. Remove the...

Condenser fan, motor relay, receiver dryer and triple refrigerant pressure switch
Removing the condenser fan. 1 - condenser, 2 - radiator, 3 - radiator electric fan, 4 - condenser electric fan. Capacitor check 1. Check the condenser tube fins for...

Air conditioning with manual control
Control panel for air conditioner with manual control. 1 - heater electric fan switch (fan speed control), 2 - switches for selecting the direction of air flows (air...

Air conditioning with automatic control
Control panel for an air conditioner with automatic control and connectors for the air conditioner control unit. 1 - heater fan operation mode switch, 2 - automatic...

Heater — disassembly, inspection and assembly
Heater disassembly. 1 - upper part of the heater housing, 2 - ventilation mode damper, 3 - ventilation mode damper lever, 4 - windshield heating damper, 5 - windshield...

Electric heater fan
Disassembly of the heater electric fan unit. 1 - upper part of the evaporator housing, 2 - upper part of the evaporator housing, 3 - resistor (manual air conditioner) or...