GE Washer Error H20: Water Supply

The Logic Verdict

I watched The Martins chase an H2O Supply alert on a GE front-loader that also screamed whenever the cold valve opened. Swapping hoses, cycling power, and restarting the load did nothing—the only way they stopped the howl and the error was by replacing the entire H2O supply assembly. If your washer fills for a few seconds, throws H20, and the cold side screeches, start with the inlet manifold rather than chasing the lid or door switch.

What It Means

H20 means the control energized the fill valves but never saw the pressure change it expected. On late-model GE front loaders the cold and hot solenoids live inside a single “H2O supply” block mounted under the top cover; when the block sticks, leaks, or its wiring loosens, the tub never fills and the machine faults out within a minute.

Common Causes

• Seized cold-water solenoid. The video shows the cold valve squealing loudly and starving the tub until the control gave up.
• Cracked or leaking H2O supply manifold. A warped plastic body or loose screws let air in so the pressure sensor never sees flow.
• Mis-seated hoses or clogged inlet screens. Those spring clamps and screens pack with debris, so reseat them whenever you reinstall the assembly.

Step-by-Step Fix

1. Kill power, shut the water, and pull the washer forward. Give yourself room to reach the rear hoses before removing panels.
2. Remove the detergent drawer and five fascia screws. The middle screws are longer; slide the console to the right off its keyed studs so you do not snap the notch the creator highlights.
3. Take off the top cover. Back out the three screws along the back edge and lift the metal lid to expose the H2O supply block and tucked service sheet.
4. Label and unplug the harnesses. Pop off the five electrical connectors feeding the valve assembly before removing the four mounting screws so the block can hang free.
5. Release the hoses. Use pliers to compress each spring clamp, then work the hoses off with a flat screwdriver, being careful not to gouge the rubber while the machine is still pushed away from the wall.
6. Transfer hoses to the new manifold. Move each hose and clamp to the replacement GE assembly (WH13X26535) while keeping the wiring routed so you do not have to redo the work.
7. Reinstall and test. Bolt the new block back in, reconnect the wiring, reassemble the top and console, restore water and power, and run a quick cycle to confirm the fill is quiet and the H20 alert stays cleared.

Parts & Tools

• GE WH13X26535 H2O supply / water inlet valve assembly

Watch the Fix