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How does the thermostat work and how to check it in a single injection. What happens if the thermostat or the hot cold air damper does not work. Can the vacuum tubes be connected the other way around or will it work? The thermostat is needed to supply a vacuum to the diaphragm to open the damper in the air filter to supply hot air. The video shows in detail the principle of operation of the thermostat and how to check the operation of the air damper. ????All the tricks and secrets of Volkswagen and Audi repair ???? https://vk.ru/vagguru ????Telegram, where all the answers to questions ????https://t.me/+fMNhVhSfxycwZWYy Zen channel https://zen.yandex.ru/severny Telegram https://t.me/avtovag VK group https://vk.com/vagguru Mail: [email protected] If the video helped you and you want to help develop the channel Sberbank card: 4276 1609 2679 5262 Andrey S. Subscribe! Like if the video was useful!