What causes the Volvo V40 air conditioning not to cool?

[OBlakely]

Volvo V40 air conditioning not cooling reasons are as follows: 1. The radiator and condenser are dirty, leading to poor heat dissipation. 2. The electric fan is not working properly: Normally, the electric fan has two speeds, one is low speed and the other is high speed. If the electric fan does not have high speed or the high-speed rotation is insufficient, the above phenomenon will occur. 3. The thermostat is faulty: The thermostat cannot open and close normally. If the thermostat opening is too small at normal temperature, it will cause the engine's cooling water circulation to slow down, resulting in high water temperature at low speeds. A faulty water temperature sensor or the electric fan's temperature control switch can also cause this phenomenon. 4. Excessive engine carbon deposits or excessive air conditioning system pressure: This leads to poor engine performance, increased running resistance, and thus inability to cool.