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Error code reference

Maytag Dryer Error Code F4E4

Low L2 voltage (less than 50V) detected at the ACU (electric models only).

Maytag codesMaytag dryer codes

Low L2 voltage (less than 50V) detected at the ACU (electric models only).

First step from the service manual

Check to see if a household fuse has blown or a circuit breaker has tripped; confirm the power cord is properly installed and plugged into the power outlet.

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

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What F4E4 means on a Maytag dryer

F4E4 indicates the Central Control Unit (CCU) has detected low L2 voltage, reading less than 50 volts on the second leg of the 240V supply. Electric dryers require two 120V legs (L1 and L2) to deliver the full 240V needed for the heating element, while the motor and controls run on a single leg. When the CCU sees L2 drop below 50V, it flags F4E4 and typically halts operation to protect the appliance. On gas models, this code can also point to a missing or faulty loopback connection at pins 4 and 5 of the P14 harness on the CCU.

For homeowners, this error usually means your dryer is not receiving proper power from the wall. The most common culprit is a tripped circuit breaker or a blown household fuse on one leg of the circuit. Unlike standard 120V outlets, dryer circuits use a double-pole breaker, and it is possible for only one side to trip, which cuts L2 while leaving L1 active. The dryer may still power on and the drum may spin, but there will be no heat and the F4E4 code will appear.

Before suspecting the CCU itself, confirm the power cord is fully seated at both the outlet and the terminal block on the dryer. Also check that relay connections at the CCU are secure, as a loose connection can cause intermittent or low voltage readings at the board.

Source: manufacturer service documentation.

Common causes of F4E4

  1. 01

    Tripped circuit breaker or blown fuse on L2 leg

    Wiring / connection

    A double-pole dryer breaker can trip on only one side, cutting L2 voltage while leaving the dryer partially powered. This is the most frequent trigger for F4E4 and requires no parts to fix if resetting the breaker resolves it.

  2. 02

    Loose or improperly installed power cord

    Wiring / connection

    If the power cord is not fully plugged into the outlet or is not securely connected to the terminal block at the dryer, L2 voltage can read low or absent at the CCU. Inspecting and reseating the cord connections often clears this code.

  3. 03

    Missing or faulty P14 loopback connection on CCU (gas models)

    Wiring / connection

    Gas dryers use a harness loopback on pins 4 and 5 of the P14 connector at the CCU to simulate L2 presence. If this connector is loose, damaged, or missing, the CCU will detect low L2 voltage and throw F4E4 even though the power supply is fine.

  4. 04

    Faulty relay connection or failed CCU

    Part replacement

    Corroded or loose relay connections on the CCU can cause the board to misread the incoming L2 voltage. If all power supply and wiring checks pass, the CCU itself may have a failed relay or internal component requiring board replacement.

See the test procedure for each cause

Frequently asked questions about F4E4

What does error code F4E4 mean on a Maytag dryer?
F4E4 means the Central Control Unit has detected low voltage on the L2 leg of the 240V supply, reading below 50 volts. Electric dryers need both L1 and L2 legs at roughly 120V each to operate correctly. On gas models, this code can also indicate a problem with the P14 harness loopback at the CCU rather than an actual power supply issue.
How do I fix F4E4 on a Maytag dryer?
Start at your home's electrical panel and check whether a circuit breaker has tripped or a fuse has blown, specifically on the L2 leg of the dryer circuit. Reset the breaker or replace the fuse, then confirm the dryer's power cord is fully seated at the outlet and tightly connected at the terminal block. If the code persists, inspect the relay connections on the CCU and, on gas models, verify the P14 connector loopback on pins 4 and 5 is intact. If all external checks pass, the CCU may need replacement.
Can I still use my Maytag dryer when F4E4 is active?
Operating the dryer with F4E4 active is not recommended. The error indicates insufficient voltage on L2, which means the heating element may not function, leaving clothes damp, and continued operation under abnormal voltage conditions can stress components. Running the machine also will not clear the underlying cause and may complicate diagnosis.
Why is my Maytag dryer running but not heating and showing F4E4?
This symptom is a classic sign that L2 voltage is missing or very low. The dryer motor and control board run on L1 alone, so the drum can spin and the display can function, but the heating element requires the full 240V across both legs. Check your breaker panel immediately for a partially tripped double-pole breaker, which can leave one leg dead while the other stays live.
How much does it cost to fix F4E4 on a Maytag dryer?
If the fix is a tripped breaker or a loose power cord, the cost is zero. A replacement household fuse for the dryer circuit is typically under five dollars. If the P14 harness on a gas model needs repair or replacement, parts are generally inexpensive. A CCU replacement is the most costly outcome, with boards commonly ranging from $100 to $250 in parts, plus labor if you hire a technician. Exhaust all power supply and connection checks before pursuing board replacement.

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