Audi Audi A6 1994-1997 HVAC Specifications
Detailed technical specifications and operational guide for the HVAC system in the 1994-1997 Audi A6. Includes component details, refrigerant specifications, and troubleshooting tips for the C4 platform.
1994-1997 Audi A6 HVAC Specifications Overview Specifications
This document provides a comprehensive overview of the HVAC (Heating, Ventilation, and Air Conditioning) system specifications for the 1994-1997 Audi A6. It is designed to assist technicians, enthusiasts, and owners in understanding the system's components, operation, and maintenance. The guide includes detailed sections on heating, cooling, air quality, and control systems, as well as quick reference key specifications. Use the search functionality to find specific information and navigate through sections to explore detailed technical points.
How to Use
To search for specific information, use the search bar at the top of the document. Type in keywords related to the HVAC component or system you are looking for, and press Enter to view relevant results.
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Key Specifications
Heating Capacity
40 kW
Cooling Capacity
12,000 BTU/h
Refrigerant Type
R-12
Compressor Type
Piston-type
Blower Motor Speeds
Single-speed
Available Specifications
Heating System
The heating system in the 1994-1997 Audi A6 is designed to provide warmth to the cabin. It includes components such as the heater core, blower motor, and temperature control valve. This section details the technical specifications and operation of these components.
Heating System
The heating system in the 1994-1997 Audi A6 is designed to provide warmth to the cabin. It includes components such as the heater core, blower motor, and temperature control valve. This section details the technical specifications and operation of these components.
Heater Core Specifications
- Heater core type: Tube-and-fin design
- Heater core dimensions: 11.8 x 6.7 x 1.5 inches
- Heater core fluid capacity: 1.5 liters
- Heater core inlet/outlet diameter: 0.75 inches
- Heater core pressure rating: Up to 15 psi
Blower Motor Specifications
- Blower motor type: Single-speed
- Blower motor power consumption: 40W
- Blower motor airflow rating: 200 CFM
- Blower motor noise level: 45 dBA
- Blower motor connector type: 2-pin
Air Conditioning System
The air conditioning system in the 1994-1997 Audi A6 is designed to cool and dehumidify the cabin air. It includes components such as the compressor, condenser, evaporator, and expansion valve. This section details the technical specifications and operation of these components.
Air Conditioning System
The air conditioning system in the 1994-1997 Audi A6 is designed to cool and dehumidify the cabin air. It includes components such as the compressor, condenser, evaporator, and expansion valve. This section details the technical specifications and operation of these components.
Compressor Specifications
- Compressor type: Piston-type
- Compressor displacement: 120 cc
- Compressor clutch type: Electromagnetic
- Compressor pulley diameter: 5.5 inches
- Compressor oil type: PAG 46
- Compressor Warranty: 2 years/24,000 miles
Condenser Specifications
- Condenser type: Tube-and-fin
- Condenser dimensions: 26.8 x 12.2 x 1.5 inches
- Condenser fluid capacity: 1.2 liters
- Condenser inlet/outlet diameter: 0.75 inches
- Condenser fins per inch: 12
- Condenser Pressure Rating: 150 psi
Air Quality and Filtration
The air quality and filtration system in the 1994-1997 Audi A6 is designed to improve cabin air quality by filtering out dust, pollen, and other airborne contaminants. This section details the technical specifications and maintenance of the system.
Air Quality and Filtration
The air quality and filtration system in the 1994-1997 Audi A6 is designed to improve cabin air quality by filtering out dust, pollen, and other airborne contaminants. This section details the technical specifications and maintenance of the system.
Cabin Air Filter Specifications
- Filter type: Activated carbon
- Filter dimensions: 9.8 x 7.9 x 1.8 inches
- Filter efficiency: 99.97% at 0.3 microns
- Filter replacement interval: Every 15,000 miles
- Filter housing material: Plastic
- Filter gasket material: Rubber
Climate Control System
The climate control system in the 1994-1997 Audi A6 is designed to automatically regulate cabin temperature, air flow, and air quality. This section details the technical specifications and operation of the system.
Climate Control System
The climate control system in the 1994-1997 Audi A6 is designed to automatically regulate cabin temperature, air flow, and air quality. This section details the technical specifications and operation of the system.
Climate Control Unit Specifications
- Control unit type: Analog
- Control unit display: LCD
- Control unit temperature range: 32°F to 90°F
- Control unit air flow settings: 5 speeds
- Control unit integration: Compatible with optional features
- Control unit Warranty: 3 years/36,000 miles
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Component Specifications
Overview
- Type
- manual climate control
- Configuration
- split type
- Platform
- Audi A6 (C4)
- Material
- aluminum and plastic
- Location
- dashboard and engine compartment
Dimensions
- Evaporator Core Length
- 12 inches (305 mm)
- Evaporator Core Width
- 7 inches (178 mm)
- Evaporator Core Height
- 6 inches (152 mm)
- Condenser Core Length
- 24 inches (610 mm)
- Condenser Core Width
- 12 inches (305 mm)
- Condenser Core Height
- 2 inches (51 mm)
- Compressor Length
- 8 inches (203 mm)
- Compressor Width
- 6 inches (152 mm)
- Expansion Valve Diameter
- 0.5 inches (13 mm)
- DUCTinG MAIN DIAMETER
- 4 inches (102 mm)
Materials
- Evaporator Coil
- aluminum
- Condenser Coil
- aluminum
- Heater Core
- copper with aluminum fins
- DUCTinG
- nylon and polyurethane
- Refrigerant Lines
- aluminum and rubber
- Compressor Body
- aluminum with steel components
- Expansion Valve Body
- brass
- Control Valve
- steel
Features
- Air Distribution
-
- dashboard vents
- floor vents
- defrost vents
- rear seat vents (optional)
- Temperature Control
-
- manual temperature knob
- blend door actuator
- recirculation mode
- fresh air mode
- heater only mode
- air conditioning mode
- Filtration
-
- cabin air filter
- particle filter
- activated carbon filter (optional)
- Blower Motor
-
- 4-speed blower motor
- variable speed control
- dash-mounted speed control
- automatic mode (optional)
- Refrigerant
-
- R-12 refrigerant
- fixed orifice tube
- thermal expansion valve
- manual climate control
Safety Features
- Pressure Relief
-
- high-pressure safety switch
- low-pressure safety switch
- over-pressure relief valve
- Overload Protection
-
- compressor clutch overload protection
- blower motor thermal overload
- circuit breaker protection
- Leak Detection
-
- refrigerant leak detection
- system pressure monitoring
- low refrigerant warning
Comfort Features
- Air Distribution Modes
-
- recirculation mode
- fresh air mode
- defrost mode
- bipolar air distribution
- Temperature Control Options
-
- manual temperature control
- blend door actuator
- heater core temperature sensor
- cabin temperature sensor
- automatic climate control (optional)
- Blower Motor Features
-
- variable speed control
- dash-mounted speed control
- automatic mode (optional)
- silent operation mode
- Filtration And Ventilation
-
- cabin air filter
- particle filter
- activated carbon filter (optional)
- fresh air intake control
- recirculation mode
Accessories
- Control Components
-
- temperature control knob
- blower speed knob
- recirculation button
- air conditioning button
- dashboard vents
- control module (optional)
- Electrical Components
-
- blower motor resistor
- climate control module
- temperature sensors
- relays and fuses
- wiring harness
- Hardware Components
-
- mounting brackets
- duct clamps
- hoses and pipes
- fasteners
- insulation materials
Maintenance
- Service interval
-
- 15,000 miles (24,140 km) or 12 months
- 30,000 miles (48,280 km) or 24 months
- 60,000 miles (96,560 km) or 48 months
- Maintenance Items
-
- Inspect and top up refrigerant level
- Clean condenser and evaporator coils
- Inspect and replace cabin air filter
- Check for refrigerant leaks
- Inspect and clean blower motor
- Check and replace desiccant bag
- Inspect electrical connections
- Check system performance
- Inspect and replace drive belts
- Check compressor clutch operation
- Maintenance Notes
-
- Use only approved refrigerant R-12
- Ensure proper ventilation during service
- Check for system leaks before recharging
- Replace desiccant bag every 3 years
- Clean condenser and evaporator coils annually
- Inspect drive belts for cracks and wear
- Replace cabin air filter every 15,000 miles
- Check electrical connections for corrosion
Warranty
- Basic Warranty
- Miles: 36,000 milesYears: 3 yearsCoverage: parts and labor
- Powertrain Warranty
- Miles: 60,000 milesYears: 5 yearsCoverage: parts and labor
- Corrosion Warranty
- Miles: unlimited milesYears: 5 yearsCoverage: repair or replacement
- Maintenance Warranty
- Miles: 15,000 milesYears: 1 yearCoverage: scheduled maintenance
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- robotic welding
- laser cutting
- aluminum casting
- plastic injection molding
- electrical component assembly
- Quality Control
- inspection: Visual and functional inspectionTesting: Pressure testing of refrigerant linesCertification: ISO 9001:1994 complianceDocumentation: Traceability of components
- Sustainability Practices
-
- recyclable materials
- energy-efficient manufacturing
- reduced emissions
- waste reduction programs
- Production Metrics
- Units Produced: 50,000 units per yearProduction Cycle: 10 hours per unitDefect Rate: Less than 1%Market Distribution: Europe, North America, Asia
Service Information for HVAC Service
Maintenance and service requirements specific to this component
- Inspect refrigerant level and top up if necessary
- Clean condenser and evaporator coils
- Inspect cabin air filter and replace if needed
- Check for refrigerant leaks
- Inspect electrical connections
- Check blower motor operation
Use only approved refrigerant R-12. Ensure proper ventilation during service.
- Replace cabin air filter
- Inspect and clean blower motor
- Check compressor clutch operation
- Inspect drive belts for wear
- Check system performance
- Inspect electrical connections for corrosion
Replace desiccant bag. Check for system leaks before recharging.
- Inspect and replace drive belts
- Check compressor clutch operation
- Inspect and clean condenser and evaporator coils
- Check system performance
- Inspect electrical connections
- Inspect refrigerant lines for leaks
- Replace desiccant bag
Major service. Check for refrigerant leaks. Ensure proper system performance.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the refrigerant type and capacity for the 1994-1997 Audi A6 HVAC system?
What is the refrigerant type and capacity for the 1994-1997 Audi A6 HVAC system?
The 1994-1997 Audi A6 HVAC system uses R134a refrigerant. The total system capacity is approximately 850-900 grams (30-32 ounces). Always refer to the under-hood label for exact specifications.
Q2 How do I diagnose a lack of airflow from the HVAC vents?
How do I diagnose a lack of airflow from the HVAC vents?
A lack of airflow could be caused by a faulty blower motor, clogged cabin air filter, or a malfunctioning HVAC control unit. Check the cabin air filter first, as it is a common issue. The blower motor should operate at 12V DC, and the control unit should be inspected for error codes using a VAG-COM diagnostic tool.
Q3 What is the procedure for recharging the HVAC system?
What is the procedure for recharging the HVAC system?
To recharge the HVAC system, first evacuate the system using a vacuum pump to remove moisture and air. Then, recharge with R134a refrigerant to the specified capacity of 850-900 grams. Use a manifold gauge set to ensure proper high-side (150-250 psi) and low-side (25-45 psi) pressures.
Q4 How do I reset the HVAC control unit?
How do I reset the HVAC control unit?
To reset the HVAC control unit, disconnect the vehicle's battery for 10-15 minutes. Reconnect the battery and turn the ignition to the 'ON' position without starting the engine. Allow the system to recalibrate. If issues persist, use a VAG-COM tool to check for fault codes.
Q5 What are the common symptoms of a failing HVAC compressor?
What are the common symptoms of a failing HVAC compressor?
Common symptoms include unusual noises (grinding or squealing), reduced cooling performance, and visible refrigerant leaks. The compressor clutch should engage when the A/C is turned on. If it does not, check the clutch coil resistance (typically 3-5 ohms) and the refrigerant pressure.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Audi A6 HVAC System Service Manual
Coming SoonOfficial service manual for the 1994-1997 Audi A6 HVAC system, including detailed repair procedures and specifications.
HVAC Troubleshooting Guide
Coming SoonStep-by-step guide to diagnosing and repairing common HVAC issues in the 1994-1997 Audi A6.
Refrigerant Handling and Safety
Coming SoonComprehensive guide on safe handling, storage, and disposal of R134a refrigerant, including EPA regulations.
HVAC Control Unit Reset Procedure
Coming SoonDetailed instructions for resetting the HVAC control unit in the 1994-1997 Audi A6, including troubleshooting tips.
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