Originally Posted by Edistobob
Just replaced a faulty gray tank sensor in our 2013 25' Flying Cloud. Access is extremely easy--the sensors are mounted in the drain plumbing just before the gate valves, not the tanks themselves. A new sensor fixed the problem for me, got the part in Jackson Center under warranty when we recently passed through. I noticed that the out-of-warranty price at JC is about twice what you'd have to pay if you ordered the sensor direct from Catcon.
Before you go to the trouble of replacing the sensor, you might want to check the contacts on the cabling that is plugged into the sensor. It is a 4-conductor telephone-type connector and if road spray has gotten past the sealing cover, you may have some corrosion. It is difficult to clean but it might be worth a try. From experience, I can tell you that it is much easier to unscrew the sensor and remove it in order to try to clean the contacts. Don't forget to check the contacts on the plug itself too.
we also have the same problem with the sensor of the grey water tank. We have been camping at a site with sewage, water, etc. For the last three weeks. Every four days we having flushing our tanks, then the grey water sensor started flashing orange. After reading some of your posts and suggestions and have tried every thing possible, like reseting the power from the unit, unplugging the cable from the sensor, filling up the tanks again and flushing them several times, the problem persisted. Since we have a new 28Intl series (3months old) we decided to call Jackson center tech support, their answer was very clear and short , " your sensor needs to be replaced" so here we are on the way to the nearest Airstream dealer to have replace it. The down thing is that we have to drive 140miles to the nearest dealership to have fix it under the warranty. To me this is unacceptable quality matter and lack of craftsmanship from Airstream since it seems to be such a recurrent problem for what I can read with your postings. I hope Airstream can do a better job with the electric sensor box and install a system that could be easy for us to fix without the need to make a trip to a specialist or to drill holes in the tanks to fix it..specially if you are in a situation of dry camping in the middle of non where.