441
AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Interpretation of the measurements.
«m»: High pressure. «s»: Over-heating (SC).
«n»: High temperature. «t»: Ambient air temperature.
«p»: Under-cooling (SR). «u»: Blown air temperature.
«q»: Low pressure. «v»: Humidity.
«r»: Low temperature. «w»: Temperature T3.
Over-heating (SC).
The over-heating represents the difference between the aircon fluid temperature at the evaporator outlet
and the evaporation temperature.
The over-heating gives the quantity of aircon fluid (in the liquid state) in the air conditioning circuit
Values for over-heating (SC).
Values «s» Origins Solutions
2° < SC < 15°C Correct quantity
SC > 15°C Lack of aircon fluid in the cooling circuit
Add some
aircon fluid
SC < 2°C Excess aircon fluid in the cooling circuit
Remove some
aircon fluid
Blown air temperature «u».
The blown air temperature should be between 2°C and 10°C.
E5AP2FBC
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