In fact, there are two main reasons for the leakage of the parking heater exhaust gas into the cab:
1. Due to the rough workmanship of the product and the improper design of technical principles, long-term use may cause problems with the airtightness of the heater main unit, resulting in exhaust gas cannot be discharged to the outdoors through the exhaust port in time.
2. Man-made reasons. There is an unreasonable situation when installing the parking heater, and it may cause an accident of exhaust gas leakage when used. Therefore, we suggest that it is more secure to ask a professional engineer to install it.