Fiat Bravo Quiz
Heating

Air conditioning system operation

In this manual: Heating
Dear Reader — 1Engine — 35Engine lubrication — 3Engine cooling — 10Ignition/spark plugs — 14Fuel system — 10Petrol fuel injection — 13Diesel injection system — 13Exhaust system — 7Clutch — 7Transmission / Gearshift / Automatic Transmission — 5Front Axle — 11Rear axle — 4Steering — 9Wheel alignment — 1Brake system — 22Wheels and tyres — 10Body — 34Heating — 6Electrical system — 39Lighting system — 14Instruments — 7Windscreen wiper system — 8Vehicle care / tools — 6Jump Starting / Towing the Vehicle — 3Jacking up the vehicle — 1Fiat Bravo / Brava Maintenance Schedule — 1Maintenance — 38Wiring diagrams — 5
15steps
~90min
4/5difficulty
Done 0 of 15

An air conditioning system is also available as optional equipment for the Fiat Bravo/Brava.

The air conditioning system consists of refrigerant compressor, condenser, expansion valve, evaporator, receiver/drier and pressure lines.

The refrigerant compressor is driven by the crankshaft via a V-belt or multi-V belt.

It increases the pressure in the refrigerant circuit to a maximum of 30 bar, causing the refrigerant gas to heat up. In the condenser, the air flowing past absorbs the heat (cooling air, remains outside the vehicle); this cools the hot refrigerant gas and it condenses. The refrigerant becomes liquid.

It then flows, still under high pressure, through an expansion valve, which reduces the pressure. The refrigerant then evaporates in the circuit and at the same time cools down considerably again. In the evaporator, the refrigerant absorbs heat from the air flowing past. This cools the air.

This cooler air is then directed into the vehicle interior. The heat absorbed in the evaporator turns the refrigerant into gas, which is routed at low pressure to the compressor. The cycle then begins again. The receiver/drier serves as an expansion vessel and refrigerant reservoir.

Warning: Repairs to the air conditioning system are not described. Apart from maintenance (tensioning the compressor drive belt / replacing the cabin air filter), all work on the air conditioning system should be carried out by a specialist workshop. In particular, the refrigerant circuit must not be opened, as refrigerant can cause frostbite on contact with skin.
Funktion der klimaanlage

  1. Compressor

  2. Pulley with electromagnetic clutch

  3. High-pressure line to condenser

  4. Condenser

  5. Condenser electric fan

  6. Connecting line condenser - evaporator

  7. Expansion valve

  8. Evaporator

  9. Evaporator electric fan

  10. Connecting line evaporator - drying filter

  11. Drying filter

  12. Low-pressure line to compressor

  13. Driving airflow for condenser cooling,

  14. Airflow for condenser cooling by electric fan with vehicle stationary.

  15. Airflow for evaporator by heater blower.

High-pressure circuit



Low-pressure circuit

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