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Error code reference

GE Refrigerator Error Code F604

FF (Door) Icemaker no water supply detected

GE codesGE refrigerator codes

FF (Door) Icemaker no water supply detected - icemaker cycling without filling.

First step from the service manual

Check water supply, water valve, and fill tube.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F604 means on a GE refrigerator

The F604 error code on a GE refrigerator indicates that the French Door (FF) icemaker is cycling through its harvest and fill sequence but is not receiving any water. The control system detects this condition when the icemaker completes a cycle without a successful fill event, meaning the ice mold remains empty after the fill phase should have completed. This code points directly to a failure in the water delivery path that feeds the door-mounted icemaker unit.

The water supply path for the door icemaker includes the household supply line, the inlet water valve (typically a dual or triple solenoid valve), and the fill tube that routes water up through the refrigerator door hinge area into the icemaker mold. Any blockage, restriction, or failure in this path will prevent water from reaching the mold. A frozen fill tube is a particularly common culprit, especially in the section that runs through or near the freezer door. Low household water pressure, below approximately 20 PSI, can also prevent the water valve from opening fully enough to deliver an adequate fill volume.

The water inlet valve itself may also be the source of the problem. The solenoid coil dedicated to the door icemaker line can fail electrically or the valve seat can become clogged with mineral deposits, preventing water flow even when the solenoid is energized. Diagnosing this fault requires systematically checking water supply pressure, inspecting the fill tube for ice blockages, and testing the inlet valve solenoid for proper resistance and operation.

Source: manufacturer service documentation.

Common causes of F604

  1. 01

    Frozen fill tube

    Wiring / connection

    The fill tube that delivers water to the door icemaker can freeze solid, especially near the door hinge routing area. Inspect the tube for ice blockage and use a hair dryer on low heat to carefully thaw it if frozen.

  2. 02

    Failed or clogged water inlet valve

    Part replacement

    The solenoid port on the inlet valve dedicated to the door icemaker may have a failed coil or mineral deposit buildup blocking flow. Test the solenoid coil for proper resistance and inspect the valve screen for debris.

  3. 03

    Insufficient household water pressure

    Wiring / connection

    The water inlet valve requires adequate supply pressure to open and deliver a full fill. If household pressure is too low, the valve will not function correctly and the icemaker will cycle without filling.

  4. 04

    Kinked or pinched water supply line

    Wiring / connection

    The supply line behind the refrigerator can become kinked if the unit was pushed too far back against the wall. Pull the refrigerator forward and inspect the line along its full length for any bends or pinches.

  5. 05

    Defective icemaker fill components

    Part replacement

    The door icemaker module itself may have an internal fault preventing it from triggering the fill cycle correctly, or the fill cup and funnel assembly may be misaligned or damaged, causing water to miss the mold entirely.

See the test procedure for each cause

Frequently asked questions about F604

What does F604 mean on a GE refrigerator?
The F604 code means the French Door icemaker is detecting no water supply during its fill cycle. The icemaker is completing its mechanical harvest cycle but water is not reaching the ice mold. The code directs attention to the water supply line, inlet valve, and fill tube as the primary areas to inspect.
How do I fix the F604 error on my GE refrigerator?
Start by confirming the household water supply valve is fully open and that the line behind the refrigerator is not kinked. Next, check the fill tube for ice blockages and thaw if necessary. If water supply and the fill tube check out, the water inlet valve solenoid should be tested and replaced if it is not functioning correctly.
Will resetting my GE refrigerator clear the F604 error code?
A reset may temporarily clear the F604 code from the display, but the error will return if the underlying water delivery problem is not resolved. The icemaker will continue cycling without filling, and the code will reappear once the control detects the no-fill condition again. The root cause must be corrected for the code to stay cleared.
Is the F604 error on a GE refrigerator a safety concern?
The F604 code is not a safety hazard. It indicates a functional problem with ice production rather than any electrical or food safety issue. However, if the problem is a frozen fill tube, leaving it unaddressed could allow ice buildup to spread and potentially affect other components over time.
How much does it cost to repair a GE refrigerator showing an F604 error?
If the issue is simply a frozen fill tube or a kinked supply line, there may be little to no parts cost involved. If the water inlet valve needs replacement, parts typically range from $30 to $80 depending on the specific valve assembly, plus labor costs if a technician performs the repair. A full diagnostic service call generally runs between $75 and $150 before any parts are factored in.

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