My black water tank gage always shows 2/3 or full even though I've emptied it and flushed it. What would cause this gage to not read accurately? and how can I fix it? thank you
Ignore it, use a water flushing wand though the toilet opening, water/ice combo, or if your patient you can put septic tank cleaner in a wait a week or so. It's a common problem - usually associated with hanging toilet paper/crude on sensors.
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