Control method for outdoor unit disconnection of frequency conversion air conditioner

Abstract

The invention discloses a method for controlling the disconnection of an outdoor unit of a frequency conversion air conditioner. After the air conditioner is turned on, a user sets the working mode of the air conditioner. The user judges according to the working mode, and judges and operates according to the working state of the outdoor power supply relay, and then judges whether the communication loss occurs. In the case of communication loss, the working state of the air conditioner and the fan speed are controlled according to the indoor and outdoor temperature parameters, so that the air conditioner can work normally even if the communication between the indoor unit and the outdoor unit is lost. The problem in the prior art that the air conditioner will be shut down once the connection is lost, which will affect the use of the air conditioner, is avoided, and the use satisfaction of the air conditioner is improved. The method for controlling the loss of connection of the outdoor unit of the variable frequency air conditioner of the present invention has the advantages of ensuring that the air conditioner can work normally when the indoor and outdoor communication is lost, and maximally ensuring that the user can use the air conditioner normally when the air conditioner is needed.

Description

technical field [0001] The invention relates to a method for controlling the out-of-connection of an outdoor unit of an inverter air conditioner. Background technique [0002] Existing frequency conversion air conditioners are more and more favored by consumers because of their advantages such as power saving and comfort. Existing inverter air conditioners need a communication circuit to ensure the normal operation of the indoor unit and the outdoor unit. The communication circuit converts the signal from the processor of the indoor unit / outdoor unit to photoelectric conversion through the optocoupler, then transmits the electrical signal through the signal line, and then through the optocoupler, performs photoelectric conversion on the electrical signal, and the outdoor unit / indoor unit processes The receiver receives the signal and processes it. However, any damage to any of the three connecting lines, indoor, outdoor, and in the middle, will cause the air conditioner to...

AI Technical Summary

Problems solved by technology

Therefore, the inverter air conditioner, especially the electric control board, has a relatively high failure rate and is difficult to maintain.

[0004] How to improve the reliability of the inverter air conditioner controller, improve user approval rate and comfort? How to ensure that users can use the inverter air conditioner normally in the hottest and coldest time? These problems have been puzzling the technicians in the industry, making the use of inverter air conditioners unsatisfactory

Once a communication failure occurs between indoors and outdoors, an error will be displayed on the display panel of the air conditioner, which will cause the air conditioner to fail to work normally

The current air conditioners do not have the communication loss control function, and they will stop working when the communication is lost, or the air conditioner cannot be used normally due to a fault, which affects the user's satisfaction with the use of the air conditioner.

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