AIR
CONDITIONING
398
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)
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
E5AP2FBC
Values «p»
Origins Solutions
SR < 2°C
2°C < SR < 4°C
Lack of aircon fluid in the aircon condenser (should be
more than 150 grammes)
Lack of aircon fluid in the aircon condenser (should be
around 100 to 150 grammes)
4°C < SR < 10°C/12°C
Correct quantity
SR > 10°C/12°C
Excess aircon fluid in the aircon condenser
SR > 15°C
Add aircon fluid
Remove aircon fluid
Blown air temperature «u».
The blown air temperature should be between 2°C and 10°C.
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