The invention discloses a control method of a water purifying
machine. The control method of the water purifying
machine comprises a control method for automatically preparing pure water by the water purifying
machine, and a control method for continuously preparing and supplying the pure water, and meanwhile, also comprises an automatic recycling control method and an automatic discharging control method of concentrated water generated in a process of preparing the pure water by the control method of the water purifying machine. The invention also discloses a
control system for the control method of the water purifying machine; the
control system comprises a water preparing device used for preparing the pure water and a controller used for controlling preparation of the pure water and the concentrated water; the invention also discloses the water purifying machine based on the
control system. The control method of the water purifying machine, which is provided by the invention, can realize effects of saving water and saving energy, achieves purposes of improving and prolonging the
service efficiency and the service life of a
reverse osmosis membrane, has beneficial effects that
purified water is produced during use of ordinary water, and is stored in a
water storage pressure tank for pressure accumulation, so as to be used in case of need; a filter membrane can be flushed, so that the
service efficiency and the service life of the water purifying machine are improved and prolonged; when the stored
purified water is used, no extra concentrated water is generated, and no waste water is discharged; the protection is started in case of water deficiency, so as to prevent the water purifying machine from being damaged.