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Error code reference

Maytag Dryer Error Code F:50

No voltage detected at the water valve relay (appears ONLY in diagnostic test mode).

Maytag codesMaytag dryer codes

No voltage detected at the water valve relay (appears ONLY in diagnostic test mode).

First step from the service manual

Check that the wires are plugged in on the valve and at the relay on the machine control electronics. See TEST #8, page 7.

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

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What F:50 means on a Maytag dryer

The F:50 error code on a Maytag dryer indicates that no voltage was detected at the water valve relay during diagnostic test mode. This code is exclusive to dryer models equipped with a steam function, where a water valve supplies water for steam generation. The machine control electronics board contains a relay dedicated to energizing this water valve, and F:50 triggers when the control board cannot confirm that voltage is reaching that relay circuit during the diagnostic sequence.

The most common source of this fault is a wiring connection failure between the water valve and the relay on the machine control electronics. Connectors can work loose over time due to vibration, heat cycling, or improper servicing. Because this code only appears during diagnostic test mode, it will not surface during normal operation, making it easy to overlook until a technician runs the full diagnostic sequence.

Diagnosis should begin with a thorough inspection of all wiring harness connections at both the water valve itself and at the relay terminal on the machine control board. Loose, corroded, or broken pins in these connectors are the primary suspects. If connections are confirmed secure and in good condition, the fault may point to a failed water valve solenoid, a damaged wiring harness, or a defective machine control electronics board that is not properly supplying or detecting voltage at the relay output.

Source: manufacturer service documentation.

Common causes of F:50

  1. 01

    Loose or disconnected wiring at the water valve

    Wiring / connection

    The wire harness connector at the water valve can vibrate loose or pull free, cutting the circuit. Inspect the connector at the valve body and reseat it firmly.

  2. 02

    Loose or disconnected wiring at the machine control relay

    Wiring / connection

    The connector at the relay terminal on the machine control electronics board may be partially or fully unseated. Pressing the connector firmly back into place often resolves the fault.

  3. 03

    Damaged or broken wiring harness

    Part replacement

    A wire in the harness running between the water valve and the control board may be broken, frayed, or have a failed pin crimp, interrupting voltage to the relay. Visual inspection and continuity testing of the harness can confirm this.

  4. 04

    Failed water valve solenoid

    Part replacement

    If the water valve solenoid has failed internally, it may present an open circuit that prevents proper voltage detection at the relay. Testing the valve solenoid for correct resistance can confirm whether replacement is needed.

  5. 05

    Defective machine control electronics board

    Part replacement

    If all wiring and the valve check out correctly, the relay on the machine control board itself may have failed, preventing it from supplying or detecting voltage at that circuit. Board replacement is required in this case.

See the test procedure for each cause

Frequently asked questions about F:50

What does F:50 mean on a Maytag dryer?
F:50 means the machine control electronics detected no voltage at the water valve relay. This code only appears during the dryer's diagnostic test mode and relates to the steam system's water valve circuit. It typically points to a loose wiring connection at either the water valve or the control board relay. It does not appear during normal drying operation.
How do I fix the F:50 error code on my Maytag dryer?
Start by checking that all wire connectors are fully seated at the water valve and at the relay on the machine control electronics board, as outlined in TEST #8 of the diagnostic procedure. If connections are secure, inspect the wiring harness between these two components for damage or broken wires. If the wiring is intact, test the water valve solenoid for an open circuit. If all components test correctly, the machine control board may need to be replaced.
Is it safe to use my Maytag dryer when the F:50 code appears?
Because F:50 only appears during diagnostic test mode and not during normal operation, your dryer may still run drying cycles without interruption. However, the steam function will likely not operate correctly until the fault is resolved. It is best to address the wiring or component issue before relying on the steam feature.
Will resetting my Maytag dryer clear the F:50 error code?
A power reset will not permanently resolve F:50 because the underlying cause, such as a loose connector or a failed component, remains present. The code will return whenever the diagnostic test is run again. The wiring and components in the water valve circuit need to be inspected and corrected to eliminate the fault.
How much does it cost to repair a Maytag dryer with an F:50 error code?
If the fix is simply reseating a loose wire connector, there may be no parts cost at all, though a service call typically runs between $75 and $150 for labor. If the water valve needs replacement, parts and labor together generally range from $100 to $250. A machine control electronics board replacement is the most expensive scenario, often falling between $200 and $400 or more depending on the model and service rates in your area.

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