A residential dishwasher typically clogs due to the accumulation of organic food waste, grease, and mineral deposits inside internal filters, the sump basin, or the flexible drain hose. Failing to scrape large food chunks off dinner plates before loading them into the racks causes bits of bone, paper labels, rice, and grease to bypass the primary filter basket and pack tightly inside the narrow drain pump housing or sink plumbing connection. You can troubleshoot plumbing clogs easily by inspecting the sump filter. You can verify that your corrective action is successful when scraping plates before washing, cleaning out the filter basket weekly, and flushing lines with hot vinegar water prevents recurring clogs.
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