Communication failure checking device and method for air conditioning system

Abstract

The invention relates to a communication fault detecting device and method in an air conditioning system which has an outdoor unit connected with a plurality of indoor units, aiming at making use of the wired / wireless controller to cut off the communication of the indoor units even when the communication lines connecting the outdoor unit and the indoor units are not separated, so that the indoor unit with communication fault can be more quickly and easily found. To achieve the aim, the communication fault detecting method provided by the invention in the air conditioning system which has an outdoor unit connected with a plurality of indoor units includes: whether a communication fault happens to the air conditioning system is judged; when the communication fault occurs, selectively separate the indoor units through the communication lines and then find out the indoor unit with communication fault.

Description

technical field [0001] The present invention relates to an air-conditioning system connecting a plurality of indoor units to one outdoor unit, and in particular to a communication error detection device and method of an air-conditioning system for detecting communication errors between the outdoor unit and the indoor unit. Background technique [0002] Generally, an air conditioner is a device for cooling or heating an indoor space. By circulating a refrigerant between the outdoor unit and the indoor unit, the liquid refrigerant absorbs the surrounding heat when it is vaporized, and then discharges the heat when it is liquefied. Play the role of cooling or heating. [0003] In general air conditioners, one indoor unit is installed on one outdoor unit. However, recently, users are not interested in a multi-system air conditioner in which multiple indoor units with different shapes and capacities are connected to one or more outdoor units. There is an increasing demand to run...

AI Technical Summary

Problems solved by technology

[0006] For this type of air conditioning system, although the operator is required to take maximum care to prevent incorrect connections when connecting the communication wires, power wires, and refrigerant piping between the outdoor unit and multiple indoor units when setting up the system, due to the The wiring between indoor units is very complicated, so there may be wrong connections, and if the operator accidentally causes a wrong connection of the communication line of one indoor unit, normal communication with all indoor units including this indoor unit will also occur. communication error

[0007] If a communication error occurs, in order to check the communication status of the outdoor unit and each indoor unit, it is necessary to separate each communication line connecting the outdoor unit and multiple indoor units one by one in order to find the indoor unit where the communication error occurred, resulting in a long detection time, And there is a dangerous problem when separating the communication lines of the air conditioning system installed at a high place

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