Waste water light / control panel

[Cest-si-bon]

Hi, I am a new owner of a Chausson Flash 02 Motorhome (2010), the full waste light on the control panel won't go off and I can't turn the control panel off. I have drained the wastewater both front and back and the toilet cartridge is empty too. It was working fine, I've used the Motorhome a few times, the last time the water was probably more full than it has been previously. I have checked that the water is draining from both waste pipes when taps are turned on and they are, perfectly. Any ideas, greatly welcomed!

 

[grasscutter]

For three years I have had a small square of tape over my light as it’s easier to win the lottery than get the light turned off.

 

[Gellyneck]

The sensors in the tanks get covered in "gunk" and send false readings to the control panel. "Most" motorhomes seem to suffer from this and there are a number of threads on here about it.
Easiest solution, ignore it.
Next easiest, clean the tanks \ sensors using either proprietary cleaners or cheaper alternative but it will probably return in a few weeks.
Longer-term solution, replace the sensors with a different brand \ model. Some of the threads you'll find have some info on these.

ps

 

[Jimbohorlicks]

Probably the probes that trigger the level warnings need cleaning.if you can get to your tank that is.
Not sure if thats possible on a chausson without removing the tank.