For those with older Liberty's, the single black/gray tanks have level sensor's that can easily get plugged up with, well you know what! I know this is Jdub's specialty, it involves poop, but I wanted to share this in case your sensor's are in-op.

The sensor's are small float type that complete a circuit when the little float raises as the tank level increases. I have one that will not work, so I'm replacing all four. Liberty doesn't have them, but you can get them for 16.00 each at CDI, www.cdiweb.com.

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