What is the reason why m3 warm wind in hippocampus is not hot?

The reasons why the warm air in the hippocampus m3 is not hot are: 1, and the warm air trough is blocked; 2. The cooling system lacks coolant; There is something wrong with the thermostat. Haima m3 is a compact car owned by Haima Zhengzhou. The length, width and height of the car are 4553mm, 1737mm and 1495mm respectively, and the wheelbase is 2600 mm. The body type is a four-door five-seat car, and the gearbox is 5-speed manual. The driving mode of hippocampus m3 is front front drive, the front suspension type is McPherson independent suspension and transverse stabilizer bar, the rear suspension type is H-shaped torsion beam suspension, and the steering assist type is mechanical hydraulic assist.