MULTI-TYPE AIR CONDITIONER

PROBLEM TO BE SOLVED: To easily determine a combination of each of pipes and wiring during heating operation.SOLUTION: All of expansion valves are opened to concurrently perform the heating operation, and the specific one expansion valve is closed after lapse of first predetermined time. Further, af...

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Bibliographische Detailangaben
Hauptverfasser: YOKOYAMA JUNPEI, WATANABE TOSHIHIKO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To easily determine a combination of each of pipes and wiring during heating operation.SOLUTION: All of expansion valves are opened to concurrently perform the heating operation, and the specific one expansion valve is closed after lapse of first predetermined time. Further, after lapse of second predetermined time, a change in temperature during a period from the closure of the specific one expansion valve to the time point when the second predetermined time elapses is detected by a temperature sensor installed in each indoor unit and is transmitted to an outdoor unit via the wiring. When the indoor unit with the largest change in temperature in the change in temperature transmitted to the outdoor unit is a specific one indoor unit connected to the specific one expansion valve by the pipe, it is determined that the combination of connection of the wiring between a terminal corresponding to the specific one expansion valve and the specific one indoor unit is correct and otherwise, it is determined that the combination thereof is incorrect.