Stick Water Pump Troubleshooting: LED Blink Codes & Quick Fixes

Is your cordless stick water pump not working as expected? Don't worry—most issues can be identified by the LED indicator and solved in just a few simple steps.

1. The Pump Won't Start

Before assuming the pump is faulty, check the following:

Make sure the battery is fully inserted.
Ensure the filter is installed correctly.
Check that all wire connections are secure.
Turn the pump off and restart it.

If the LED is blinking, use the guide below to identify the cause.

2. Understanding the LED Blink Codes

LED Blinks	Meaning	Recommended Action
1	Overcurrent	Restart the pump. If the issue continues, contact customer support.
2	Undervoltage	Recharge or replace the battery.
3	Overvoltage	Use a compatible battery.
4	Stall Protection	Check the pump for sand, gravel, or other debris. Clean the filter and pump before restarting.
5	MOSFET Overheating	Turn off the pump and allow it to cool before restarting.
6	Commutation Error	Restart the pump. If the issue persists, contact customer support.
7	Phase Missing on Startup	Contact our support team.
8	Battery Connected Before Switch Was Off	Turn the switch off before connecting the battery, then reconnect the battery and restart the pump.
9	Hardware Overcurrent	Stop using the pump and contact customer support.
10	Offset Error	Restart the pump. If the issue continues, contact customer support.
11	Dry-Run Detected	Make sure the intake pipe is fully submerged before starting the pump. Never run the pump dry.
12	Water Temperature Too High	Allow the pump to cool before using it again.

3. Stall Protection

If the LED flashes 4 times, the pump's stall protection has been activated.

This usually happens when the impeller cannot rotate freely because of:

Sand
Gravel
Leaves
Dirt
Other small debris

Simply remove the filter, clean the pump thoroughly, reassemble it, and test again.

4. Startup Phase Error

If the LED flashes 7 times, it indicates a startup phase error.

Please contact our support team with your order number, details of the issue, and shipping address. We will offer a proper solution.

5. Low Water Flow

If the pump is running but the flow is weak:

Check whether the hose is clogged or damaged.
Clean the filter.
Flush the hose if necessary.

Keeping the filter clean helps maintain the best pumping performance.

6. Never Run the Pump Dry

The pump includes dry-run protection to help protect the motor.

Always make sure the intake pipe is fully submerged before turning the pump on. Running the pump without water may trigger the 11-blink warning and cause the pump to shut down automatically.

Still Need Help?

If the issue remains after trying these steps, please contact our support team with:

Your order number
The LED blink count
Your shipping address

This information helps us diagnose the issue more quickly and provide the best solution.