| 摘要 |
PURPOSE:To immediately decide a trouble in a control element and promptly repair the trouble, by displaying the trouble through a display device indicating preset temperature of a temperature setter when the control element of an air conditioning device for a vehicle causes the trouble. CONSTITUTION:An opening detector 15 of an air mixing door, inside air sensor 3, outside air sensor 4 and motor 7 are cused in a short-circuit or open or lock condition, if their output signals are abnormally in a low or high level, each trouble display signal Re, Rr, Ra, Rm of the detector 15, sensors 3, 4 or the motor 7 is output, on the basis of this output signal, a trouble decision is performed to stop the display action of preset temperature, flicker the display content of a display device 14 and detect a trouble caused in a control element of an air conditioning device for a vehicle. On the other hand, on the basis of an output signal, a corresponding number to the detector 15, sensors 3, 4 and the motor 7 is displayed to a driver circuit 13, in accordance with this number, a trouble location is accurately decided to promptly perform repair of the trouble. |
