| 摘要 |
PURPOSE:To contrive to prevent monitor mode from continuing unfavorably due to the occurrence of trouble by a method wherein the shifting from normal operating control to monitor mode and following automatic return to normal operating control afger the elapse of a certain fixed period of time is performed by giving a predetermined input to a specified signal line. CONSTITUTION:Reset signals are given to CPUs 42 and 43 by putting the power supply to work or the like. Via the signal line 56 for monitor mode, the shifting to monitor mode is accomplished with a switch 37. Then, a timer T is reset to ''0''. The processing in monitor mode is to be carried out for a period of time controlled with the timer T. If the monitor signal is turned OFF in the midway of monitor mode, the processing in monitor mode is interrrupted and the state is returned to the step as was before the shifting to monitor mode. Accordingly, if the signal line 57 is left being turned ON for some trouble or other, the processing in monitor mode is accomplished for a certain fixed period of time T0 and, after that, the state is returned to the step as was before the shifting to monitor mode in order to accomplish normal operating control. consequently, monitor mode can be accomplished without impairing the original controlling function of the air conditioner. |
