Cabin blowers: airflow and cooling are different functions

Useful to know

The internal fan moves the air through the air conditioning system to the compartment. HELLA also indicates its role in blowing and clearing glass from blur. [1]

In case of complaint, describe the flow rate and temperature separately. Strong warm air and lack of air flow are different symptoms. The speed setting controls the fan rather than directly measuring the amount of refrigerant. This distinction helps to start the conversation with the workshop with specific observations, instead of with the assumption that any climate malfunction means "need of freon".