Dishwasher Water Supply Issue

Appliance Repair Questions › Category: Dishwashers › Dishwasher Water Supply Issue
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David Handley asked 1 year ago
I have a GE GDT665SSN2SS dishwasher. A few weeks ago, it stopped working properly. The cycle would pause and the amber light on the door would blink and the display would indicate \"H2O\". I checked and there is definitely water coming to the water control valve. I replaced the water control valve and it worked fine for about 4-5 loads. But after those 4-5 loads, during each attempt to use it, it began to stop after 5 minutes or so. It seems to be trying to fill with water but it appears that it\'s not getting any water at all. After those 5 minutes or so of trying to fill the amber light on the door just goes off and the cycle stops without indicating anything on the display other than the time remaining. After another minute or so, the time remaining goes off and it stops completely.
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Appliance Repair Staff answered 8 months ago

Your GE GDT665SSN2SS dishwasher displaying an "H2O" error and halting mid-cycle indicates an issue with the water supply or related components. Here’s a structured approach to troubleshoot and potentially fix the problem:

Understanding the H2O Error

  • Meaning: The "H2O" error typically points to a problem with the water intake, suggesting that the dishwasher isn't filling with water as expected.

    • Initial Checks

    • Water Supply: Confirm that the water supply valve under the sink is fully open.

    • Hose Kinks or Blockages: Ensure there are no kinks or blockages in the water supply hose.

      • Water Control Valve Replacement

      • Recent Replacement: You mentioned replacing the water control valve, and the dishwasher worked for 4-5 loads.

      • Recheck the Valve: It's possible the new valve might be faulty or not installed correctly. Double-check the installation.

        • Investigating Further

        • Water Inlet Issues: If the dishwasher attempts to fill but can’t, inspect the water inlet for any clogs or debris.

        • Float Switch: The float switch, which detects water level, might be stuck or malfunctioning. Ensure it moves freely and isn’t obstructed.

          • Electrical Connections

          • Wiring and Connections: Check for any loose or damaged wires leading to the water control valve and other related components.

            • Advanced Diagnostics

            • Error Codes: Since the display isn’t showing any specific error codes after the initial "H2O", it might require diagnostic mode to read hidden error codes. Refer to the dishwasher’s manual for instructions on entering diagnostic mode.

              • Professional Assessment

              • When to Call a Technician: If these steps don’t resolve the issue, or if you're uncomfortable performing them, it’s advisable to contact a professional appliance repair technician. They can provide a more thorough diagnosis and repair.

                • Regular maintenance and checks can prevent future issues. Always ensure the dishwasher is disconnected from power before attempting any DIY repairs for safety.