The U1 system continuously runs without stopping even though the supply tank's freshwater compartment is empty, which in turn will continuously try to filter the overflowing rejected water.
This behavior might be caused by an incorrectly installed float in the supply tank either during assembly or cleaning of the tank.
Follow these steps for a quick fix:
- Make sure the supply tank is empty, and remove the silicone cap
- Remove and place the float back into the supply tank's float channel, ensuring the hollow center end of the float is facing up
- Reinstall the silicone cap back onto the float channel
- Refill the tank and test
Please get in touch with us if the above does not resolve the issue for the next step.
Sep 17, 2026