Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2010A3 2.0T, 2.0 E, STANDARDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSGENERAL, TECHNICAL DATA - REFRIGERANT R134A SERVICING (1 OF 2)GENERAL, TECHNICAL DATADESCRIPTION AND OPERATIONREFRIGERANT CIRCUITFLUSHING CIRCUIT BLOCK DIAGRAMSNOTES
2010 Audi A3 2.0T, 2.0 E, Standard
Flushing Circuit Block Diagrams: Notes
2010 Audi A3 2.0T, 2.0 E, StandardSECTION Notes
NOTE:
- The arrows in the following illustrations show the direction of refrigerant flow during flushing (refrigerant flows in opposite direction of flow when A/C system is in operation while flushing, therefore the high pressure side of the A/C service system is connected to the low pressure connection of the refrigerant circuit to the A/C compressor).
- These block diagrams show a refrigerant circuit with restrictor and reservoir, refer to Refrigerant Circuit with Restrictor and Reservoir and a refrigerant circuit with expansion valve, fluid reservoir and a second evaporator (optional equipment on certain vehicles), refer to Refrigerant Circuit With Expansion Valve, Fluid Reservoir and Second Evaporator .
- Depending on the construction of the A/C service station, check-valves may be installed between the refrigerant circuit and the A/C service station (to guarantee correct direction of refrigerant flow during flushing).
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.