What is the reason for the heater not getting warm when the water temperature rises?
2 Answers
The reasons for the heater not getting warm when the water temperature rises are: 1. Engine cooling system failure; 2. Incorrect position of the heater baffle; 3. Lack of antifreeze; 4. Failure of the radiator circulation system. The functions of the car heater system are: 1. To provide heating for the car interior and increase the temperature inside the car; 2. Defrosting effect. When the air humidity is high and there is a large temperature difference between the inside and outside of the car, frost or fog will form on the window glass, affecting the driver's visibility. The working principle of the car heater system is: blowing cold air to the surface of the heat exchanger, absorbing its heat and directing it into the car, thereby increasing the temperature inside the car. The car heater system is divided into: 1. Water heating system; 2. Air heating system; 3. Independent combustion heating system; 4. Comprehensive preheating heating system.
When it comes to the engine temperature rising but the heater not producing warm air, I often encounter this issue. Most of the time, it's due to problems with the cooling system, such as the thermostat being stuck in the open position, preventing the engine from reaching a high enough temperature for the heater to warm up. Another common cause is a clogged heater core, where impurities accumulate over long-term use, obstructing the flow of coolant and hindering heat transfer. It's also necessary to check the coolant level; if it's too low or there are air bubbles, heat cannot circulate properly. Improper operation of the fan can also affect the output of warm air, especially if there's a fault with the blower motor. I recommend first manually topping up the coolant and bleeding the air from the system. If that doesn't work, it's best to have a technician check the thermostat or heater core, as delaying repairs can affect driving comfort.
