AUTOAQUA Smart ATO Micro ATO Overfilling

[Adamantium]

My smart ATO micro keeps adding small increments of water to my tank, despite the sensor being well underwater. I’ve cleaned the sensor, and restarted it, to no avail. It just keeps adding <1 second of water at a time, which adds up over time.

Has anyone seen this before? Anyone have a fix?

Thanks!

 

[gbroadbridge]

Can you see any corrosion inside the optical sensor?

I've had these fail on me, in my case they just got stuck on and dumped a full RODI container into the sump.

Mine have never lasted more than a year or two. How old is yours?

 

[Adamantium]

Can you see any corrosion inside the optical sensor?

I've had these fail on me, in my case they just got stuck on and dumped a full RODI container into the sump.

Mine have never lasted more than a year or two. How old is yours?

Nothing visible. I’ve had another seem to get water in the sensor, but this one seems fine.

It’s going on 2 years old. Maybe less.

What a bummer.

 

[LeftyReefer]

I have the Smart ATO LITE model and it too keeps overfilling my tank for no reason. I've only had mine for a little over a month and it has never seemed to worked right. I take that back, it seems to work fine during the day, but keeps over-filling at night... At first I thought it might be due to nocturnal snails bothering the sensor at night, but it has happened way too often for it to be attributable to snails. Tank is fine all day and when I go to bed... but wake up in the morning and the tank is over-filled past the high level sensor and the red light is blinking. ATO has to be unplugged and reset for it to start working again, only to over-fill again a few nights later.

Mine has the green sensor, and I've checked it for corrosion several times and it seems brand new and still sealed perfectly. I don't know what the issue is. ugh.

 

[Hallowhead]

Have you ensured that no calcium is built up on the sensor? Make sure it's not near any bubbling equipment

 

[gbroadbridge]

I have the Smart ATO LITE model and it too keeps overfilling my tank for no reason. I've only had mine for a little over a month and it has never seemed to worked right. I take that back, it seems to work fine during the day, but keeps over-filling at night... At first I thought it might be due to nocturnal snails bothering the sensor at night, but it has happened way too often for it to be attributable to snails. Tank is fine all day and when I go to bed... but wake up in the morning and the tank is over-filled past the high level sensor and the red light is blinking. ATO has to be unplugged and reset for it to start working again, only to over-fill again a few nights later.

Mine has the green sensor, and I've checked it for corrosion several times and it seems brand new and still sealed perfectly. I don't know what the issue is. ugh.

Yep, the last one of mine that failed was a green one with the two sensors. When it filled with water both sensors failed and just turned the pump on.

I've switched to a Kamoer ATO now which has both an optical and float sensor so hopefully no surprises.

 

[LeftyReefer]

Yep, the last one of mine that failed was a green one with the two sensors. When it filled with water both sensors failed and just turned the pump on.

I've switched to a Kamoer ATO now which has both an optical and float sensor so hopefully no surprises.

Not anymore.
The newest version (ATO ONE 2 SE) now comes with (2) optical sensors instead of one of each.
only the older (ATO ONE SE) model came with the float sensor, now it comes with two optical sensors only.

 

[Adamantium]

Yup, no bubbles and no calcareous algae.

Quite frustrating.

I’ve heard good things about the Osmolator, but it’s a little pricey. Anyone have other recommendations?

 

[Leon821019218]

I've got mine in October of last year and it started to act up the last few weeks. It gave malfunction codes (beeping) and at some point it started to fill up the tank way beyond the sensor. Did a few checks, cleaned the sensor etc. but it didn't wanted to work properly. Then I decided to give the sensor a good look under a good light source and I noticed that there was water inside the frigging sensor! It has been in the same place since I got it, so its a mystery how the sensor got damaged and water could creep in. Must say I'm a little disappointed since it lasted just over a year... Maybe it's just bad luck but I'm not gonna buy one of these again.