Tunze stream 3 stopped working

[bubblemytip]

Hello

My stream 3 stopped working so I took it apart for a clean with citric acid and noticed this in the impeller cavity. Not sure if this is the cause or an issue Tunze might be aware of? Seems like some crazing of the plastic?

Any advice would be welcome. Have tried using different power supplies (as have 3 of these pumps) and it seems like an issue with the powerhead itself.
Thanks

 

[blaxsun]

How old is the unit and how regularly has it been cleaned and maintained?

 

[rvitko]

The inside looks normal, the center tube is clear so you can see the copper windings inside, this was something we thought would be cool but often caused panic in customers so the latest pumps are black sleeved inside. They do sand the top edge of this tube during assembly, roughly 1/4" down from the top is roughened. Do any lights flash on the power head itself?

 

[bubblemytip]

Thanks for the response. No lights flash on the pump itself but the external control led on the driver flashes and the led on the power supply also flashes (whichever power supply I use).

Pump is probably about 3 years old and fully cleaned with critic every 6 months (I run lower alk) and this seemed all needed.

I had another stream 3 do the same after about a year but I just replaced it because I had ordered from overseas. Probably will do the same again but thought I should at least try and troubleshoot.
Thanks for the help.

 

[xiaoxiy]

Thanks for the response. No lights flash on the pump itself but the external control led on the driver flashes and the led on the power supply also flashes (whichever power supply I use).

Pump is probably about 3 years old and fully cleaned with critic every 6 months (I run lower alk) and this seemed all needed.

I had another stream 3 do the same after about a year but I just replaced it because I had ordered from overseas. Probably will do the same again but thought I should at least try and troubleshoot.
Thanks for the help.

You should still be under warranty then right?

 

[rvitko]

Yes, this pump has a five year warranty, I would contact Tunze Germany or the distributor for warranty.

 

[zalick]

Thanks for the response. No lights flash on the pump itself but the external control led on the driver flashes and the led on the power supply also flashes (whichever power supply I use).

Pump is probably about 3 years old and fully cleaned with critic every 6 months (I run lower alk) and this seemed all needed.

I had another stream 3 do the same after about a year but I just replaced it because I had ordered from overseas. Probably will do the same again but thought I should at least try and troubleshoot.
Thanks for the help.

Did you get a resolution? I'm having the exact same issue with one of my Stream 3s.