Audi Q3: A/C System, General Information
Heating, Ventilation & Air Conditioning / Audi Q3 (8U) 2011-2018 Service Manual / A/C System, General Information
- Introduction
- A/C Technology Basic Principles
- Refrigerant Oil
- A/C System and Refrigerant R134a Safety Precautions
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Introduction
The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the careful s
A/C Technology Basic Principles
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - S
Refrigerant Oil
General Information
Caution
When handling refrigerant oil, pay attention to
local regulations.
Refrigerant oil mixes with the refrigerant (about 20-40%,
depending on compressor type aSEE MORE:
Multimedia connections
USB adapter
Fig. 139 Audi Genuine Accessories: USB adapter
You can connect your mobile devices to the MMI
using the USB ports with charging function and a
USB adapter, and charge the battery at the same
time.
You can purchase the USB adapter cable from an
authorized Audi dealer or at specialty stor
System Overview - Refrigerant Circuit
HD = High-pressure end
ND = Low-pressure end
1 - A/C Compressor Regulator Valve -N280-
To check, refer to Vehicle Diagnostic Tester in the "Guided Fault
Finding" function,
→ Chapter "A/C Compressor Regulator Valve -N280-, Checking Switch-On
Signal" and
→ Wirin
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