Climate Control Panel When a command is given to prompt the air conditioner system to activate, an electrical charge is sent to the engagement coil of the compressor clutch, gas refrigerant is then circulated and compressed, once compressed it travels to the condenser which causes the refrigerant is transform into a liquid. (Note: Some compressor's are designed with an internal valve (instead of a clutch) which starts the flow.) A low pressure port is connected to the low side of the evaporator, and the high pressure port is connected to the condenser, a serpentine belt is used to power the compressor. (Note: High pressure ports are always smaller than lower pressure ports.)
Air Conditioner Compressor Once the compressed (heated) refrigerant has left the compressor its transferred to the condenser using a hose were its cooled and condensed back into liquid form, but still under under high pressure. These units can also have a receiver dryer which acts as a refrigerant cleaner/moisture remover.
Air Conditioner Condenser (Removed)
Evaporator Core (Heater Plenum Removed) The climate control blower motor is used to push air through the evaporator core which delivers the cold air flow into the venting system.
Blower Motor Basic automotive air conditioner system diagram and refrigerant flow chart, these systems are closed (sealed) which continuously re-circulate refrigerant.
Air Conditioner System Helpful Information Hoses and components should be checked for deterioration, bubbles, cracks and hardening or oily residue, all could be signs of leakage.
Leaking Condenser Proper refrigerant levels should always be maintained, low system refrigerant charge is a common cause of a weak AC system. Odors can developed in the air conditioning system when a fungus has grown on the evaporator core, aerosol disinfectants can be used to remedy this condition. Refrigerant charging kits are available at many auto parts stores. Leaves and dust particles can get logged in the condenser hindering its performance, use a garden hose or compressed air to clean. (Note: An air conditioning system is under pressure, until the system is discharged completely, no repairs or disassembly should be performed. Eye protection should always be worn.)