According to your car condition and vehicle usage, if the warm air of Songhua River Hafei model is not hot, combined with the warm air structure of the model, I suggest you go to the maintenance franchise store to check the sealing of the mixing valve, that is, the valve plate of the internal and external circulating damper. If the valve plates of the internal and external circulating dampers are not well sealed, the warm air will not be hot. Secondly, check whether the change-over switch of the heating pipe is fully open. If the above-mentioned maintenance parts are in good working condition, it is recommended to check the water tank of the heater, and it is recommended that you go to the repair shop for on-site inspection and maintenance according to whether there are impurities on the surface of the car.
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