3155 pump won't come on

[fishllady]

I have a 2 year old 3155 osmolator that worked great until recently. The green "level" light and the "too high" alarm and light work properly. The problem is that when the water level is below the sensor, the pump does not come on, nor do the "pump on" and "too low" lights illuminate. The sensor appears clean, but I soaked it in vinegar for 30 minutes just in case. In the same sump compartment as the sensor is the sump return pump and a Maxijet that runs a
Simplicity filter. The latter is a relatively new addition. In reading older posts about magnetic field interference, I tried unplugging these pumps, but that did not affect the 3155 performance. I can remove the sensor, dry it off completely, and it won't call for the top-off pump to come on. Any ideas?
Thanks.

 

[rvitko]

It sounds like the optic sensor has failed, they can be replaced. Based on your description it is either an optic sensor or the capacitor that powers the optic sensor that is failing and both are repairable, typically we change both as a set in these cases.

Send to:
Tunze USA
305 Victor St
Austin, TX 78753

 

[fishllady]

Thank you. I will send the optical sensor and the controller to be repaired.