COMPONENTS OF THE
AIR CONDITIONING Troubleshooting
AIR CONDITIONING Troubleshooting
Evaporator
Evaporator:
How they work
The
expansion valve and/or orifice tube injects the highly pressurized
liquid refrigerant into the evaporator. The refrigerant expands. The
resulting evaporation cold is discharged to the environment via the
large surface of the evaporator and routed to the vehicle interior
through the ventilation airflow.
Effects of failure
A defective evaporator exhibits the following symptoms:
* Poor cooling performance
* Failure of the air conditioning system
* Poor ventilation performance
Causes for failure of the evaporator can be:
* Pipes blocked in the evaporator
* Evaporator leaking (at the connection, caused by damage)
* Evaporator contaminated (air passage disturbed)
Troubleshooting
The following test steps should be considered during troubleshooting:
* Check evaporator for contamination
* Inspect evaporator for damage
* Check connection pipes for correct fit
* Leak test
* Pressure measurement with the compressor switched on and the engine running
* Temperature measurement on the input and output line
kandi younes
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