how to contact Tunze

mrtian97 · Oct 7, 2017

I have the ATO 3155, been working great for almost 1 yr. Today the pump kept pumping and only off when the back up float valve activated. I think my electri eye is bad. Can I just replace the electric eye since the cable connect all the way with the controller.

I tried wash the electric eye but still do the same

Thanks

sonubhai · Oct 7, 2017

https://www.tunze.com/US/en/contact.html

fill this out someone from tunze with contact ya. That's how I got in touch with them last time and it was quick support.

mrtian97 · Oct 7, 2017

thanks

mrtian97 · Oct 8, 2017

after overnight air dry, the sensor is working again. Just wondering if this common. Basically I soak it in vinegar mix for 30 minutes then rinse yesterday, then tried it and kept pumping water. then I let it sit overnight, plug back in, now works

rvitko · Oct 9, 2017

Please know there is one point of contact in the US, me. Every one of these forms comes to me and I greatly appreciate it if rather than a shotgun of every forum, Facebook, email, etc, just one message is sent, I already have a tremendous workload and multiple messages only reduce my response times.

If the sensor is dirty you will get no fill in most cases, if the sensor fills past the sensor to the float, the cause is most probably bubbles clinging to the sensor. I attach our walkthrough on bubble issues:

Every Osmolator gets 3 separate quality checks so a defect is extremely rare. There is an on board self diagnostic test to check the optic sensor. This test looks for the dry voltage signal and the sensor must be clean and dry when doing this test. A wet sensor will always fail this test.

1) With the sensor completely wiped dry plug in the controller.
2) All 4 lights will flash and it will beep, a single light will show for 1 seconds and then the normal 15-20 second pump run at startup will begin.
3) This light that is on one second is the optic sensor status, green means pass, yellow means it is marginal, red means it failed.

Assuming it passes, the next test is to catch it in the act of an overfill, if you wipe your finger under the sensor and the fill stops within 5 seconds, the cause is bubbles. The sensor should be relocated to as calm and bubble free of a location as possible. Be sure that the top off hose is not near the optic sensor as bubbles are added by the splash of the fill.

mrtian97 · Oct 9, 2017

Thanks Roger

mrtian97 · Oct 15, 2017

Roger, my ATO after working for 1 wk, now start overfilling again.
I ran the On board diagnostic test as you provided above, and the light was green.
My sensor is in return pump area, which is totally calm area (my sump is 3 chambers Red Sea Reefer 350 sump that has separate return pump area from skimmer and from inlet water from the tank). And this ATO has been with the same setup for 1 yr with no problem.
I ran my finger under the sensor when it’s overfilling but the pump didn’t stopped, it continued to fill and when I trigger the backup float, the pump stopped. But when I release the float, the pump is filling again.

Pls help what I should do next
Thanks