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Error Code H20 Troubleshooting Guides
Published FixGraph guidance for diagnosing and responding to error code h20.
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GE Dishwasher H20: Check Water Supply Before Assuming a Part Failure
GE's public dishwasher article titled H20 in Display says H20 means the dishwasher is getting too little water or no water during its timed fill phase. Before thinking about a valve, sensor, or control part, record the exact display character (H20 versus H2O), the complete model number, the cycle stage, and whether there is standing water or a leak.
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GE Dishwasher H20 Error Code: Check Water Supply Before Service
On GE dishwashers, the H20 display means the dishwasher did not receive enough water or no water during its timed fill phase. First record the model and the cycle showing the code.