Quote:
Originally Posted by Pete'sMH
Do you have a one way vent under the kitchen sink? If it’s stuck closed the drain isn’t vented and might not drain properly. The same would be true if the sink vents through the roof if that is blocked by something. Draining the tanks might create enough of a vacuum to pull the water through. Easy to check.
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Thanks. Good info. Looking at the schematic of the drainage system, I see an “Anti-siphon vent”. Now, it looks like I have to take a panel out to see it. How will I know if it’s closed?
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