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Old 07-08-2014, 01:17 PM   #1
Wandering
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Toilet that fills itself.

Hope someone has worked through this. We have no issues with the toilet in our 2011 3150 during normal operation. We have a problem when stored. With no water in the fresh tank, no hose hooked up and the pump not on, the toilet will fill while sitting in storage. Sometimes two or three visits to the 5th while in storage. Never seems to overflow out of the toilet, just fill with water to the brim and then the mold sets in. We flush, come back a few weeks later and its full again. Clues?
 
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Old 07-08-2014, 01:22 PM   #2
Mark N.
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What the...?!? I will be following this thread with interest! The case of the auto-appearing water! Hmmmmm......
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Old 07-08-2014, 01:52 PM   #3
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How could this even be possible with NO water source??? I will keep checking in on this thread as well!!!
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Old 07-08-2014, 01:57 PM   #4
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Hi

What is the temperature change dally?

Have you drained the water heater and the low point drains?

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Old 07-08-2014, 02:14 PM   #5
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Water lines are still pressurized and the flush valve allows a slow fill of the bowl? Just guessing...
Try flushing just before you walk out the door when placing it in storage until the water no longer flows into the bowl (or open a faucet until no more water flows out of the faucet)
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Old 07-08-2014, 02:55 PM   #6
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Puzzler for sure!!!
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Old 07-08-2014, 03:09 PM   #7
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Easy one. Rodents are using your toilet. lol.
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Old 07-08-2014, 03:31 PM   #8
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Haunted toilet?
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Old 07-08-2014, 04:20 PM   #9
bigred715
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Boy! Iv'e never heard of that before. The "Phantom" toilet. You must have water in the system and maybe expansion from heat forces it out. Gets me.
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Old 07-08-2014, 05:43 PM   #10
Wandering
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Temperature change is 30 degrees. I don't drain the water heater and low point drains unless its winter, so no.

I think I will try the suggestion to flush the toilet and open a faucet when we exit the RV and see what happens. Residual water pressure seeping past the flush valve seems possible, but the toilet does not seep when under water pressure from pump or hose so I'm not sure about that.

How about haunted rodents! Thx all....
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Old 07-09-2014, 12:25 AM   #11
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Hi

It is possible for the tem change to cause enough expansion over time to push water by the toilet valve; some valves will leak under low pressures when they work under higher pressures.

I see the pressure buildup when the water heater is turned on to heat a tank of cold water and then the first time you open a hot water faucet the water is under more pressure than the rest of the system. The excessive pressure in only momentary but if there were a little air trapped some were in the system your 30 degree flux may be enough to cause this.

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Old 07-09-2014, 03:19 AM   #12
timandsusan
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The water system is still pressurized. I get a little water in ours but not like you are getting when we are disconnected from water and in storage. At least you can be pretty sure the water system has no small leaks!
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Old 07-23-2014, 01:04 PM   #13
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Well....it did it again. That's 3 times since last hookup to water or water in the fresh tank. Took it to the shop to get bearings packed and brakes checked/adjusted. Checked the toilet B4 dropping it. Empty. Week later went to pick it up from shop, toilet 2/3 full. Didn't leave keys with shop. No water in tank. I don't get it!!
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