Product features: 1. The softening principle of the central water softener adopts the traditional ion exchange technology to exchange the functional ions on the resin with the calcium and magnesium ions in the water, so as to adsorb the excess calcium and magnesium ions in the water and achieve the purpose of removing scale (calcium carbonate or magnesium carbonate); This product adopts electronic technology to realize the functions of central soft product operation status display, automatic flushing and so on; 2. The valve is driven by 12VAC synchronous motor to realize the switching of water circuit, so as to realize the function of flushing; Negative display LCD screen and hidden touch keys are adopted; 3. There is a power-off nonvolatile memory inside to save key parameters without loss in power-off; 4. The controller has a variety of fault self-test and prompt functions, but the fault alarm interface displays E01: prompt memory fault; 5. Display E02: prompt motor fault