3155 Sensor not working

[jvilla58]

My osmolator 3155 sensor isn't working anymore. I can pull the sensor out of the water and it says it is level. I have done the vinegar cleaning and all. Is there anything I can do to fix this?
Thank you. - Jason.

 

[rvitko]

If you tried cleaning and it still gives a constant green light, it likely needs a new sensor, if you send it in, we can replace the sensor.

Tunze USA
2121 Cole Springs Rd
Buda TX 78610

 

[jvilla58]

Just received my sensor back and it works like new again. Thank you Roger for fixing it up for me. Much appreciated.

 

[rvitko]

Thank you!

 

[jvilla58]

Well it was short lived. It has stopped working like before. Is there anything I can do to try fixing it myself? I have unplugged and pluged it in. Cleaned it.

 

[rvitko]

What is it doing? Given the age, it could be just that the pump has failed.

 

[jvilla58]

Well the pump works when I plug it in while it is doing its start up thing. The sensor is out of the water and the light on the box is solid green.

 

[rvitko]

Hmm, if you wipe the sensor will it then turn yellow? One possibility is a clinging drop of water, otherwise I can only assume the cable for the optic sensor has a broken wire.

 

[jvilla58]

I wiped the sensor. Cleaned it. And it is just solid green. It is doing the same thing as when I first sent it to you.

 

[rvitko]

OK, I looked it up and on your controller I did not change the optic sensor. It was a newer controller and what I found was the sensor was what I can only describe as too good, it was near perfect in terms of the max and min voltages, and when this is the case, the calibration gets set very high, calibration is generally automatic and the controller bases it on the mV points of a wet and dry reading. I manually adjusted these to the standard or default set points because when they are very high it can cause an error from fewer bubbles or a small amount of debris. I think the real culprit is that the optic sensor has a break in the wiring so it works well but if angled a certain way, the contact is broken. This was a missed diagnosis on my part because this problem would be intermittent and depend on how the wire is held or bent. I can get you a return label and I am sorry for the inconvenience. Please PM me your email address.

 

[jvilla58]

So you are right about being the wire. I twisted the ends of the wires and it works. So should I still send it in?