Today in an intensive quality control we found a problem in the production at a small number of high flow NEXT / 2 / LT sensors. When the magnets were pressed into the turbine, an incorrect pressing tool was used on some turbines. This leads to incorrect centering of the shaft and can cause noise due to tumbling of the rotor.

If you notice disturbing noises from your sensor at a flow rate of less than 200l/h (0.9 gal/min), please contact our Support.

Write an e-mail with the subject line "Replacement high flow sensor" to info@aqua-computer.de and include the following data:

• Complete postal address incl. phone number
  
• Invoice copy of the sensor
  
• Serial number* in case of a high flow NEXT sensor

(*The serial number can be found within the aquasuite software in the system tab of the sensor)

We will replace the affected sensors afterwards.

The error affects only a few of the sensors produced from November. Noises at higher flow rates are normal and no reason for replacement. Also, an audible noise is basically normal in close proximity to the sensor.

The noise of the high flow NEXT / 2 / LT series is quieter than the known high flow sensors. Should the noise be higher in your case, please also arrange for a replacement.

We want to ensure total customer satisfaction with this product and apologize to affected customers for the inconvenience.

Due to a generally high workload and a high volume of requests to our support, processing will take longer than normal. Also the exchange will not be possible immediately. Therefore, the exchange may take a few weeks. The old sensor has to be returned only after receiving the new one. More information on how to return the sensor will be sent to you by email. The shipping costs will be covered by us. We allow 3 months time to return the faulty sensor.

ATTENTION: The offer to exchange affected sensors in advance ends on April 15th 2021. After this date, a regular complaint is required, which usually involves a direct return to your dealer or us.

Quoted from "InfoSeeker"

Is there a way to determine (physical inspection) if there is an issue with a flow next that has not been installed yet?

You need to disassemble the sensor and check the bearing pin on top of the turbine. If it is crushed your sensor is affected.

We can send you a video - please send us a mail.

This issue happend really rare. We can not match it with serial numbers. But we can say that it happend at much less than at 5% of the high flow NEXT sensors.