If the LG WM4500HBA stops partway through a cycle, LG's manual lists causes that are not faults: a motor protection device that stops the washer for a few minutes and then restarts it, and a load out of balance where the washer stops and refills to redistribute. If it is truly stopped, the display shows why: PF after a power failure, dE for an open door, UE for imbalance, SUD for oversudsing, IE for no water and OE for a drain problem. Start/Pause not pressed in time also switches the washer off.
Differential
Likely causes of “LG front-load or top-load washer stops, pauses or powers off mid-cycle”, and how to tell them apart
- 1
The motor protection device
What separates it The washer stops for a few minutes and then starts again by itself
How to confirm Wait a few minutes; LG says this is normal when the protection device activates
- 2
A power failure or inadequate electrical service
What separates it PF shows on the display after a power flicker at home
How to confirm Press Start/Pause to restart the cycle, as the manual says
- 3
An open door or a message that stops the cycle
What separates it One of dE, UE, SUD, IE or OE shows on the display
How to confirm Read the message and follow its fix in the error table
- 4
Start/Pause not pressed within the set time
What separates it The washer is off after you set a cycle
How to confirm Press Power, reselect the cycle and press Start/Pause
Before you touch a setting
Record this first — changing settings destroys the evidence
- The message on the display and the phase the washer stopped in
- Whether it restarted by itself after a few minutes
- Whether the power flickered and whether the drum holds water
Try in this order
0 of 5 completedWait a few minutes
ReversibleLG says the washer may stop for a few minutes and then start again when the motor protection device activates to prevent overheating.
Read the display message
ReversiblePF: press Start/Pause. dE: close and secure the door. UE: redistribute the load. SUD: turn off and on and run Rinse+Spin. IE: check faucets, hoses and filters. OE: check the drain hose and filter.
Check the door
ReversibleClose the door and make sure nothing is caught under it preventing it from closing completely.
Restart the cycle
ReversiblePress Power, reselect the cycle and press Start/Pause. If Start/Pause is not pressed in time the washer turns itself off.
Drain and retry
ReversibleIf the washer will not restart, clean the drain pump filter and run Drain/Spin. Call service if the same message returns.
Model-specific
What is true of this model and not of its siblings
- Messages that stop a cycle
- PF power failure; dE door open; UE unbalance; SUD oversudsing; IE inlet; OE outlet; FE overflow; PE pressure sensor; LE motor locked; FF frozen; CL control lock.
- Tools and supplies
- A bucket and towels for the drain filter, pliers for the inlet filters and a flashlight.
- Parts for this problem on the WM4500HBA (RepairClinic, 2026-09-20)
- door lock assembly, part number EBF61315802, at $135.40; switch assembly,pressure, part number EBF63534901, at $53.20; pump assembly,drain, part number AHA75853813, at $69.18.
- Other models this page answers
- These steps also fit models WM6500HBA, WM5500HWA, WM4200HWA, WM4000HWA, WM3600HWA, WM3400CW, WM8900HBA, WM9500HKA, WM6998HBA, WKEX200HBA, WKEX300HBA, WT8405CW, WT7900HBA, WT7400CW, WT7300CW, WT7150CW, WT6105CW, WD300CV.
Stop boundary
When this stops being a self-service repair
- !FE (overflow) is a stop condition: close the faucets, unplug the washer and call service
- !If the same message returns after you follow its fix, call LG service
Evidence ledger
Sources behind this answer
LG USA support page listing this model's manuals and warranty.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-20.
Exact questions
Common questions
Why does my LG WM4500HBA stop mid-cycle?+
A motor protection pause, a rebalance, a power failure or a message such as dE, UE, SUD, IE or OE.
Will it restart by itself?+
After a motor protection stop, yes, in a few minutes. After a power failure you press Start/Pause.
Why does the washer refill during a spin?+
If the washer senses an unbalanced load it will stop and refill to redistribute the load; this is normal.
Do I need to press Start/Pause again?+
After setting a cycle, yes; the washer turns itself off if Start/Pause is not pressed in a set time.
When do I call for service?+
When FE, PE or LE returns, or a dE message keeps appearing after the door is secured.