Q: How do I slow down the pump/decrease frequency (Hz)? - How to reduce water flow?

1. Preparation

• Stop the Pump: Changes to programming should not be made while the pump is running. Press the On/Off button on the screen or the base of the unit to ensure the pump is stopped.
• Determine the Required Hz: For surface pumps, the minimum Hz should be set to the lowest speed at which the pump still delivers water to its destination. Warning: Do not set the minimum frequency below 25Hz without consulting technical support.

2. Accessing the Settings Menu

• Navigate to the Model Page: Press the UP or ESC button until the screen displays the page showing the inverter's model number.
• Enter the Settings: Press Enter. When prompted for a password, input 9582 (use the UP/DOWN buttons to adjust digits and Enter to move to the next digit).
• Enter the Menu: Once the final digit is set, press Enter again to access the System Setting menu.

3. Changing the Frequency Hz (Hz)

• Select Parameter: Hover over the Hz figure (usually set to 50) and press Enter.
• Adjust the frequency: Once the number has been selected you can increase or decrease the figure using the UP/DOWN buttons.
  • Press Enter to confirm the Hz value.
• The Power-Cycle Rule: Turn off the solar isolator switch, wait 10 seconds for the screen to lose power completely, and then turn the isolator back on. The system will load the main screen and should restart automatically with the new settings applied.