2. Set the temperature controller 3 to the maximum temperature position (figure 1.16).
3. Turn on the fan with regulator 1, setting it in all positions one by one, and check the supply of hot air from the deflectors.
4. Check the distribution of air to the windshield and to the feet with regulator 2.
5. Check the air damper for recirculation or fresh air supply with regulator 4. Regulator at the top - fresh air is supplied, regulator at the bottom - air recirculation occurs.
Article based on data from the website: MERCEDESMAN
Figure 1.16. Functional check of the heating and ventilation system: 1 - Fan speed controller; 2 - Air distribution regulator, 3 - Air temperature regulator; 4 - Recirculation/fresh air supply regulator.