| 摘要 |
<p>When an ECU (40) is powered on, an overall control unit (51) determines whether a temperature (T) detected by a temperature sensor (36) is lower than or equal to a predetermined temperature (Tth). When it is determined that the detected temperature (T) is lower than or equal to the predetermined temperature (Tth), the overall control unit (51) provides a second operation start command for operating a valve driving motor control unit (53) in a rotation direction alternately switching mode, to the valve driving motor control unit (53). When the valve driving motor control unit (53) receives the second operation start command from the overall control unit (51), the valve driving motor control unit (53) starts operating in the rotation direction alternately switching mode.
</p> |
