4
GB
Troubleshooting
•
No water protection:
When the pump is out of the water for more than
2 minutes, the protection function starts and the pump stops running. At the same
time, the LED display shows ”E0”. When this function is activated, the pump will
not automatically resume. You need to cut off the power supply before it can start
working normally again.
•
Under voltage protection / overvoltage protection:
When the pump input
voltage is below or above the standard voltage of 10% and holds for more than
1 second, the system will automatically enable protection to stop the pump.
After the input voltage has returned to normal and holds for more than 3 seconds,
the system will automatically restore the pump. When the under voltage protection
is activated, the LED display shows “EL”, when the over voltage protection is
activated, the LED display shows “EH”
• Overload protection:
When the pump is running and the pump load exceeds
the rating by 10%-30%, the system identified it as pump overload. The overload
protection function is activated after about 1.5 seconds after the pump stop
running. This protection function has the Inverse-time characteristic, the higher
the overload, the faster the trigger. Starts automatically after the pump stops
for 1 second, and the system will repeat the protection process until the overload
is eliminated. When the overload protection is triggered, the LED display the “EF”.
• Over-temperature protection:
The pump automatically stops running when
the controller temperature exceeds 80°C, the LED display shows “EC”. The pump
automatically starts running again when the controller temperature returns to
65°C or less.
