The cables of the combined heavy truck heating switch are generally installed near the heating water tank under the dashboard of the cab, some above the heating water pipe in the running water tank of the engine compartment, and some above the heating water pipe behind the cylinder head. First, pull the armrest of the vehicle door handle into the vehicle cockpit. The air conditioning control system of the vehicle can be found in the position shown in the cockpit of the vehicle. Then, the two temperature adjustment knobs are displayed as warm air valves on the air conditioning control system.
Hot air valve
When the air conditioner is on, turn right and turn the air conditioner in the car into warm air. The installation position of the heating valve depends on the car and model. Generally, the installation position is near the heating water tank under the dashboard of the cab, some are installed on the heating water pipe in the running water tank of the engine compartment, and some are installed on the heating water pipe behind the cylinder head.