CITROEN C5 2005 - Interpretation of the Measurements; Under-Cooling; Values for Under-Cooling (SR); Blown Air Temperature U

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AIR
CONDITIONING
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.
Under-cooling.
The under-cooling represents the difference between the condensation temperature and the aircon fluid temperature at
the aircon condenser outlet.
The under-cooling gives the quantity of aircon fluid (in the liquid state) in the air conditioning circuit.
Values for under-cooling (SR).
E5AP2FBC
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Values «p»
Origins
Solutions
SR < 2°C
2°C < SR <4°C
4°C < SR < 10°C/12°C
SR > 10°C/12°C
SR > 15°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)
Excess aircon fluid in the aircon condenser
Correct quantity
Add some
aircon fluid
Remove some
aircon fluid
Blown air temperature «u».
The blown air temperature should be between 2°C and 10°C.
Angl.T3-page322-351-2005 4/02/05 15:38 Page 337