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Home >> Audi >> 2024 >> S3 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 254 (Air Conditioning (Refrigerant R1234YF Servicing General Information)) >> 87 Air Conditioning >> A/C System, General Information >> Refrigerant R134A Properties >> Water Content

Water Content

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Only very small amounts of water are soluble in liquid refrigerant. On the other hand, refrigerant vapor and water vapor mix in any ratio.

Any water in the refrigerant circuit will be entrained in the form of droplets once the dryer in the fluid or collecting container has absorbed approximately 7 grams of water. This water flows up to the expansion valve nozzle or restrictor and turns to ice, and the A/C system no longer has a cooling effect.

Water destroys the A/C system, because it forms acids when combined with other contaminants at high pressures and temperatures.

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