1.Auto-fill-water modes

Connect the control's blue line to electric pump, black line is connected to zero-line,

black,brown line can not be connected and should be insulated.

2.Auto-drainage and lack-water protection modes

Connect the  control's brown line to electric pump,the black line is connected to the zero-line,

the blue line can not be connected and should be insulated

3.Fill-water and drainage auto-swith mode

The chart is fill-water and drainage auto-switch mode.

This electric connection chart synthesize by automatic fill-water and auto-drainage