Fresh Water Overflow

[Loemant772]

Hi,

I recently purchased a preowned 2009 T24Z and when filling the potable water via the gravity feed when the water reaches about 1/3-1/2 full it begins to pour of the overflow tubes. I’m unsure what is going on, it’s also on coming from one of the tubes.

My initial thought is that the fresh tank drain that the manual mentions is open and that’s why the tank won’t hold water but I cannot find the drain valve to close it.