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Sometimes it will back up from a dishwasher (machine)

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Q: Why would water back up in sink when no water was run in sink?
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How can you repair the hot water knob on your bathroom sink if it won't turn to the point that you can run hot water from the sink?

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Why would no water come out of any hot water faucet but if I turn on the cold water in the tub then the sink with the hot water knob on will run cold water I am thinking the pipes can't be frozen if w?

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Can a frozen pipe cause water to come up the bathtub drain?

major back up in the lower end of the house (meaning that the kitchen sink sits higher than the bath tub that was getting the overflow) meant that everything that was washed down the sink would come up through the bath tub drain in about 30 secs of having kitchen sink water running. bought some industrial strength crystals for drainage blocks and poured it in both drains. let the sink run with hot water and watching about 1/4 of the tub fill up with years of gunk! after we stopped the water the bath tub emptied and we haven't had a problem since!


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