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mode for 10 second, and then switch to the corresponding mode to run. The setting speed is
invalid during the identification process.
1. DC mode (battery)
In DC (battery) mode, the pump speed is adjustable, range of 1000-4000RPM. The
default setting speed is 4000RPM. The speed can be set by the UP or DOWN keys, and
the speed can be increased (or decreased) by pressing the increment (or decrement)
button.
With the pump running, DC (battery) supply voltage will continue to decline to prevent
excessive discharge, when the voltage is lower than the corresponding electrical
protection voltage, the pump stops working.
2. PV Mode (solar panel)
In PV mode, the pump setting speed is similar to DC mode, and the maximum speed
(4000RPM), limit is effective. Pump running speed is also determined by the current solar
power. When the solar light enhances, the output power of solar panel increases, the
pump speed increases, and vice versa.
In PV mode, the MPPT indicator flashes. If it flashes faster, it indicates that the current
working point is closer to the maximum working point. If the flashing frequency is slower
or not, it indicates that the maximum power point is being tracked.
Solar power is insufficient, the pump speed will continue to fall, when the speed drop to
600RPM, pump stops, and report P46 faults after 3 second.
When solar power is too insufficient to maintain the current system of starting or running,
the output voltage of solar panels will drop rapidly.
When the minimum voltage drops to the lowest voltage of system and lasts for 10s, it will
report "PL" fault. Try consecutively 5 times to restart, if it still appears "PL" fault. Hold this
state for 30 min, then try to start again.
4.4.4 Reverse connection protect
If the positive and negative of power supply is reversed, the controller will continue to alarm.
4.4.5 Dry-run protection
This function refers to the pump pumps out water on well, the system can automatically
detect the anhydrous state. Pump will stop working automatically by set program. Dry-run
protection is effective all working modes, in manual mode, float switch model and solar mode.
Pump will standby for 30 minutes tore start the work (meet the start condition). Start to detect
again whether there is water or not, if no water, stop working automatically. There is water,
keep working, that cycle repeats.