We have had the same unresolved problem for 18 months! They tell us to use a bag of ice and tank blaster to clean the probes the next time we travelled (didn't work). We have had issues with our Lippert Panel and all we get from them is check the Can Bus connection. The tank probes are INSIDE the tank, so there is no way to see if they are functioning without getting underneath and pulling the probes out....yukkkkk. We just keep track of how many showers we have taken and empty both tanks, black first, then gray. Even though it says 66%, we know they are empty.
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