1, heater water tank blocked
The water tank blockage of automobile heater is one of the common faults when using warm air in winter. The water tank of the automobile heater is a miniature version of the radiator of the engine water tank, which is as easy to block as the radiator of the water tank. Therefore, it should be noted that the water tank of the heater is blocked, the coolant speed slows down, the flow rate decreases, and the heat is insufficient, resulting in the heater not being hot.
2. The cooling system lacks coolant.
Coolant is an indispensable medium in the cooling system. When in use, the warm air circulation is a pipeline connected in parallel in the small circulation pipeline of engine coolant, which is connected with the warm air water tank. It is inevitable that the cooling liquid is insufficient and the warm air is not hot.
3, thermostat failure
The most common fault of the thermostat of heating system is that it can't be closed, and the water temperature will be low during use. The heating effect is naturally not obvious when the water temperature is low. If it is found that the water temperature is too low, it needs to be handled in time to avoid the situation that the oil consumption is too high and the wear is aggravated due to the low water temperature.
The Solution of Warm Air in Wuling Hong Guang;
1, clean the heater box
Touch the air inlet pipe and air outlet pipe of the hot air tank. If the inlet water is hot and the outlet water is not hot, it means that the heater tank is blocked. You need to remove the inlet and outlet pipes of the warm air tank, soak them in vinegar or acidic liquid for one hour, and then blow them clean with an air gun.
Step 2 add coolant
The level of antifreeze should be in the middle of the scale. When the coolant level is too low, air may be sucked into the heater pipe, and there is air resistance in the engine cooling system. If the cooling system is not fully circulated, the warm air will not be hot. If there is air in the cooling system all the time, it may be that the engine cylinder pad is damaged, and the coolant needs to be replenished in time.
3, replace the thermostat: the thermostat is broken, resulting in the water temperature has been unable to go up, resulting in no hot air, then go to the repair shop to replace the thermostat.