Operation control method and device for multi-split air conditioner
A multi-connected air conditioner and operation control technology, which is applied to the control input related to air characteristics, space heating and ventilation control input, heating and ventilation control system, etc. It can solve the hidden danger of system reliability and the failure of four-way valve to change direction normally And other problems, to achieve the effect of preventing cross-gas
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[0053] Further, refer to figure 2 , based on the first embodiment of the method for controlling the operation of a multi-connected air conditioner in the present invention, in the second embodiment of the method for controlling the operation of a multi-connected air conditioner in the present invention, the up-frequency processing of the compressor of the outdoor unit includes:
[0054] Step S41, after controlling the compressor to increase to the first operating frequency to run for a second preset time period, determine whether the third pressure value of the refrigerant pressure on the high-pressure side of the air conditioner currently detected is less than the second preset value; if so, execute Step S42, otherwise execute step S43;
[0055] Step S42, controlling the compressor to increase again to the second operating frequency to run for a third preset time period, controlling the throttling component of the outdoor unit to increase to the first preset opening degree, ...
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