Last Thursday my ATO crapped out on me. I'm running the Osmolator 3 and have had a great experience up until then.
I originally thought the sensor was just dirty so I pulled the cover off and started wiping away. While doing so, I hear the sensor sizzle and see bubbles and steam coming off it. Didn't take me long to kill the power and take a closer look at what happened. Turns out the safety sensor, which is thermoregulated, burnt out. You can see the little nub below the wire melted.
I hit up Roger from Tunze and sent him the pics. He responded quick and told me that the first batch of the sensors were assembled in a room without humidity control and condensation formed inside. After a while, this condensation frys the safety sensor and kills the unit all together.
View attachment 69065
View attachment 69066
He had a new one sent out the next day along with the tracking number. I gotta say, Tunze service is really unparalleled when it comes to taking cate of the end users. No stupid games, no overly complicated fixes of explanations...just plain interest in getting me back up and running again.
It was discouraging to see this fail at first. I've never had an issue with the old osmolator, and that sat in a vat of kalk for 5 years. Glad to see they still stand by their product tho.