| 摘要 |
<p>PURPOSE:To correctly estimate the cause of failure. CONSTITUTION:An alarm detecting unit 3 detects an alarm signal from a multichamber type air conditioning system 7. An operation condition storing unit 4 stores operation conditions of each unit at the system 7 when an alarm is detected. A stop means 22 stops the system 7 when the number of alarm detections by means of a count means 21 has reached a predetermined number 'Nx'. An operation condition corresponding to an item indicated by a display item indicating unit 5 based on an operation condition of each unit at the occurrence of failure stored in an operation condition storing unit 4 is displayed on a display unit 6 when cause of failure is investigated. In this manner, cause of failure can be correctly estimated based on the operation condition when a failure has occurred.</p> |
