Control method of variable frequency air conditioner

Abstract

The invention discloses a control method of a variable frequency air conditioner. After the air conditioner is turned on, the working mode of the air conditioner is set by a user. The user judges according to the working mode and performs judgment operation according to the working state of an outdoor power supply relay so as to judge whether the situation of communication outage occurs or not. Under the condition of communication outage, the working state of the air conditioner and the rotation speed of a fan are controlled according to the indoor and outdoor temperature parameters, so that the air conditioner can still work normally under the condition that an indoor unit and an outdoor unit are not communicated; thus, the problem that the air conditioner stops once the air conditioner is not communicated so as to affect the use of the air conditioner is avoided, and the user satisfaction of the air conditioner is improved. The control method of the variable frequency air conditioner has the advantages that the air conditioner can still work normally when the indoor unit and the outdoor unit of the air conditioner are not communicated to guarantee that the user can normally use the air conditioner in need of the air conditioner to the greatest extent and the like.

Description

technical field [0001] The invention relates to a control method 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 not work properly. [0003] Regardless of the o...

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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