Expansion valve is a component of the car air conditioning system that regulates the flow of refrigerant into the evaporator, controls the pressure and temperature of the refrigerant, ensuring its proper expansion and evaporation.
Signs of the need to replace the Expansion valve
- Weak cooling of the cabin.
- Freezing of the evaporator.
- Refrigerant leaks.
- Frequent switching on and off of the compressor. Unstable operation.
Problems solved by timely replacement of the Expansion Valve
- Uneven cooling in the cabin
A worn valve leads to an inconsistent supply of refrigerant, causing temperature differences in different areas of the cabin. Replacement eliminates this effect, ensuring uniform cooling. - Freezing of the evaporator
A jammed valve supplies too much refrigerant, which leads to the formation of ice on the evaporator. Timely replacement restores normal flow and prevents freezing. - Increased compressor wear
A faulty valve creates additional load on the compressor due to incorrect pressure. Replacement reduces the load and extends the service life of the compressor. - Overheating of the refrigerant
The valve does not open completely, causing the refrigerant to overheat and reduce its efficiency. A serviceable valve maintains the correct temperature balance. - High pressure in the system
If the valve is stuck in the closed position, the pressure in the circuit increases sharply, which can damage the components. A serviceable valve stabilizes the pressure.
Features of Expansion valve replacement
- Requires Cleaning the system from refrigerant residues.
- Checking for leaks after installation.
- Replacing filter driers
Expansion valve replacement is an important part of the maintenance of the air conditioning system. Timely diagnostics and replacement prevent serious malfunctions, extend the service life of the equipment and increase comfort in the car.
