| 摘要 |
PURPOSE:To enable electrical setting of a mode by detecting the levels of output of an outside-air sensor and a solar-radiation sensor and by selecting each mode propery according to the detection signals from sensors. CONSTITUTION:When an automatic shifting switch 34 is on and the output VD of an analog adder 49 adding the output of the outside-air sensor to that of the solar- radiation sensor is expressed in the relation VH>VL>VD, the output of AND circuits 59, 60 and 61 turn to be (0), (0) and (1) respectively, while the output of a NOR circuit 42 alone turns to be (1), and a signal is supplied to the heater-mode setting terminal 48 of a mode setter 22. Next, when the relation turns to be VH> VD>VL, the output of the AND circuits 59, 60 and 61 turns to be (0), (1) and (0) respectively and the signal is supplied to the bilevel mode setting terminal 46 of the mode setter 22, while the output of the circuits 59, 60 and 61 turn to be (1), (0) and (0) when the relation turns to be VD>VH>VL, and the signal is supplied to the cooler-mode setting terminal 45 thereof. |
