Tunze ATO?

[sefrayser]

I have the Tunze 3155 with the fill eye sensor and float switch for to high water level. The problem is, it will fill until the float sensor sends the unit into alarm and cuts the fill off. It has done this twice in the past couple of months. It is not something that happens frequently. Could the sensor for the fill be dirty? What can I do to check?

[awpong]

I have the Tunze 3155 with the fill eye sensor and float switch for to high water level. The problem is, it will fill until the float sensor sends the unit into alarm and cuts the fill off. It has done this twice in the past couple of months. It is not something that happens frequently. Could the sensor for the fill be dirty? What can I do to check?

 

If it's dirty, clean it.

 

How high do you have your sensor set in relationship to the alarm float switch? I'd suggest lowering the sensory eye's position (lower the fill line)

[sefrayser]

I have the fill sensor and the overflow switch adjusted like the manual says. How do I know if the sensor is dirty? What do I clean it with. The book says detergent.

[jestep]

I would probably use a vinegar and water mix and clean it with a cloth until there is nothing on the sensor.