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Replace if necessary. Problem: Machine fills, but fill is weak. 1. Low incoming water pressure. Verify that incoming water pressure during fill is 20 ±5 PSI. 2. Incoming water solenoid is clogged. Verify that debris is not entrapped in valve. If so, remove debris. Problem: Low wash tank temperature. 1. Low incoming water temperature. Verify that the incoming water temperature matches what is indicated on the machine data plate. 2. Heater not energizing. Verify that the wash tank heater is operat