| 摘要 |
PROBLEM TO BE SOLVED: To properly control a blowoff temperature without particularly deteriorating a heating feeling in the winter season compared to the other season even when a vehicle becomes an idling state. SOLUTION: When the opening of an air mix door 9 is prescribed opening or less, while the air mix door 9 is controlled so as to become a target opening calculated from a target blowoff temperature, when the opening of the air mix door 9 exceeds the prescribed opening, a blowoff mode is a mode of using at least a foot blowoff port, and a difference between a heating capacity detecting value for expressing heating capacity of a heater and the target blowoff temperature is a prescribed value or less, the number of energizing heater elements in an electric heater 15 is controlled on the basis of the target blowoff temperature and a temperature on the downstream side of an auxiliary heating source.
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