Note
If the fan is fully switched off then the air conditioning is not engaged - which can cause a risk of misting on the windows.
With ECC*
![P4-1220-Y55X-ECC Button auto](https://www.volvocars.com/images/support/img939d179dc2c145fdc0a801e700e912ca_1_--_--_VOICEpnghigh.png?imwidth=1280)
Turn the knob to increase or decrease fan speed, AUTO is disengaged. If AUTO is selected, then the fan speed is regulated automatically - the fan speed previously set is disengaged.
With ETC
![P4-1220-Y55X-Fan button ETC](https://www.volvocars.com/images/support/img32346b98c2c15dbbc0a801e701210f4b_1_--_--_VOICEpnghigh.png?imwidth=1280)
Turn the knob to increase or decrease fan speed.