Osmolator 3155

[skeeter2134]

Having problems with the sensor. I have cleaned the sensor with hot soapy water and had has worked for a week. Latest clean lasted a day. Overfill has shut off pump as designed. Any other ideas. This unit was purchased from Marine Depot four months ago.

 

[rvitko]

The main thing to check for is bubbles.

I would first do the following, with the optic sensor completely dry plug it in. All four lights will flash and a beep and briefly a red, yellow or green light will come in. This is the optic sensor status. Red means a wire is broken or something is wrong and it needs service, yellow means it is just slightly dirty, usually fingerprints, no major concern. Green means it passed, again this test is only valid if the optic sensor is dry, a wet sensor will alawys fail (red light).

If you get a yellow or green, make sure no bubbles are near the sensor, the sensor only detects air vs water and cannot differentiate between a bubble and being dry. If you catch it in the act of overfilling, you might try wiping the sensor, if it stops, then for sure it is a bubble that stuck to the sensor.

The only other possibility would be the tank is smaller than 40 gallons and the deliberate 10 second overfill is the culprit, in this case turning down the pump as shown in the manual would solve the problem.

 

[skeeter2134]

Roger Thanks for the testing info. Green light so the sensor is ok. It appears to working now. The unit was strong for four months. Originally was using two magnets after the problems I switched to the one. If I have problems then what? Current tank info is 125 gallon reef with a 40 gallon sump.

 

[rvitko]

It has a two year warranty and you would send it in and within a day of getting it usually it will be diagnosed and repaired. Most of these types of issues are caused by bubbles accumulating on the sensor or a siphon, or the overfill but on a tank that size the overfill of 1 pint of water approx is not going to amount to much except what it is supposed to do and this is just reduce how many times per day it comes on so you don't hear the pump running all the time.