1. Click the power switch button of SunRain Solar first, then it can be set after power on.
2. Then click the water level button on the dashboard to adjust the water level on the solar meter.
3. After setting the water level, click the timing button on the dashboard to set the water filling time. Press the timer once to set a different time. Available setting times are 20 minutes, 50 minutes, 80 minutes and 100 minutes.
4. Then click the water filling button, so that the water will be filled automatically after the set time.