For example at a coolant temperature of 51 0 c 123 8 f the refrigerant pressure should be no more than 12 bar.
Mercedes benz cooling fan problem.
I have a 2008 mercedes gl 450.
The evaporator works in a similar way as the radiator except in this case instead of hot coolant there is cold refrigerant flowing through the evaporator.
Air then blows thourgh the evaportator which makes it get cold.
If it is higher the air conditioning control module presumes that the pressure is high and assigns the fan control module to run at 90 pwm actuation.
The low temperature refrigernat passes through the evaportaor which causes the evaportator to get cold.
Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
Also check the aac pressure at stand still cold.
Most cooling fans use electric motors that have a moderate to high current draw and as a result are commonly controlled using relays.
The cooling fan doesn t run even at a high temperature.
Check for cooling fan problems using this simple guide and tips.
If the a c compressor of a mercedes benz c300 is not good can it affect the fan.
When the correct parameters are met a temperature switch or.