The S1 controller calculates the water flow rate based on the selected pump end.
If the pump end chosen in the app does not match the actual pump end installed, the amount of water displayed in the app may be inaccurate.
When the app connects to a controller for the first time (either S1-200 or S1-700), it will prompt you to select the pump end.
You can also update this selection later by going to:
Settings→Advanced Settings→Pump End Selector, where you can choose the correct pump end from the list.
Refer to the following picture for the types of pump ends applicable to the S1-200 and S1-700 systems:
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How do I know which pump end type I have?
The pump end type is printed on the pump label, as shown in the image below:
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