Kia Orie's heating is not hot because of the lack of hot water. The passage into the warm air tank is blocked, resulting in insufficient hot water entering the warm air tank. Insufficient hot water will cause the water tank to be half hot and half not hot, and the wind blown out of the unheated air duct will not be hot either. The air duct on the non-hot side is not open or blocked, and there is a switch at the air outlet. Check it. Blower failure caused the air door to turn over, and the air door motor failed. The water temperature sensor signal is faulty.
5. The heater water tank is blocked and needs to be disassembled, cleaned or replaced. The water pump is lost and damaged, and the warm air flow valve and coolant circulation valve are damaged. There is no exhaust after changing the coolant.