| Air conditioner pressure switch -F129- |
| This pressure switch has 3 functions: |
| 1 - | Switches the fan for coolant to the next speed in the event of a pressure rise [approx. 1.6 MPa (16 bar) overpressure] in the refrigerant circuit. |
| 2 - | Disconnects the air conditioning system in the event of excessive pressure (approx. 3.2 MPa/32 bar overpressure) - insufficient engine cooling -. |
| 3 - | Disconnects the air conditioning system if the pressure is too low (0.2 MPa/2 bar overpressure) (e.g. during loss of refrigerant). |
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