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Old 08-29-2018, 06:12 PM   #7
butter
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Join Date: Jan 2017
Location: napanoch, ny
Posts: 17
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I have a 07 bt. If your by pass valve is in the correct position, you my have a worn out check valve. The check valve prevents cold water form entering the hot water system. Mine was faulty. Replacement was less than 10 bucks online.
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