Quote:
Originally Posted by DanandTill
.......holding tanks refuse to drain. Plenty of liquids are in them. Ideas anyone??
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Time to take the rv to your dealer. A fifth wheel trailer friend of ours had to do that after putting too much toilet paper into the black tank. Have you tried to add water to the black tank for dilution and did you add sufficient happy camper treatment to the black tank? Have you tried to back flush the drain line (s)with water? Surprising that even the gray tanks do not drain unless their clogged. Seems unlikely all the tank valves have failed closed but possible and need to be checked by the dealer.
Had that happen to the guest head on our powerboat, we were living, twice. Each time required a sanitation technician to come out to tear the system apart to unplug the system at $1000 per event. In one case, wine bottle corks fell out of a guest's back pocket and were flushed down the vacu-flush toilet. Another flushed a whole roll of toilet paper down the vacu-flush toilet after being on the boat one day.