Grey tank #2 won't drain
Montana model 3661, year 2017. My grey tank #2 (kitchen sink) will not drain; only the grey tank #1 drain when dump valve opened. Indicator on panel shows grey tank #2 is full and sink drains very slowly. The dump valve was recently changed under warranty by Camping World because of leakage - could this be related? Also, temperature is freezing here in NC, but tank heaters are turned on.
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