MODEL PROFILE
Signal or code
Error codes and display signals
The official manual linked for this model documents these messages. Some indicators apply only to variants that display them; each entry is labeled as a code, indicator, or status.
No matching signal for this model.
Model and error-code facts may be shown in the language of the original source.
MODEL OVERVIEW
About this model: LG LDNPH654S
LG LDNPH654S: FlushFit one-hour wash and dry, AutoVent door and documented display faults.
Match the FlushFit build to its covered owner family
The LDNPH654S is the FlushFit model named on LG's exact product page and exact specification sheet. The linked owner manual covers LDNPH654* on its first page, so the family number contains this SKU; its control drawing on page 28 actually includes a numeric display. This matters because a quiet dishwasher with a hidden top panel cannot be diagnosed from an unrelated front-control photograph. The exact sheet identifies a 16-place-setting tub, 44 dBA rating, pocket-handle design and floor status indicator. It also lists QuadWash Pro, TrueSteam, three spray arms and ThinQ Auto Leak Detection. Dynamic Heat Dry with AutoVent Dry distinguishes this machine from older LG units whose doors stay closed through drying. The spec calls out a one-hour wash-and-dry program, but that title is a program goal for lightly soiled dishes, not a promise that every selected option and water condition ends at exactly sixty minutes. Record the model plate and the display state before comparing a message to the family error table.
Interpret the one-hour run and automatic door opening
The manual describes 1 Hour as a cycle that both cleans and dries a light load; it can add heated time through Dry Boost. Page 32 gives a broader time range when options change, so a longer countdown alone does not imply a heater failure. START has its own four-second door-closing window, after which an alarm can sound without a component fault. Auto Open Dry is enabled by default and opens the door during the drying stage once the interior temperature is safe. Clear the space in front of the door and expect hot air or steam; do not hold the door against its mechanism. Dry Boost may blow warm air after opening, and LG advises waiting until the display says End before unloading. If the door does not open, check whether Auto Open Dry was disabled before treating the F37 motor row as applicable. P10 Dry Only is a downloaded Feature Update, while P1 Tub Clean is the standard downloaded program; neither label diagnoses a broken fan.
Separate maintenance and software states from faults
The status light near the floor must be read together with the drying setting. Page 33 says switching on Auto Open Dry disables the steady Clean Light, so a dark floor lamp at the end may reflect configuration rather than failed wiring. The Tub Clean reminder and rinse-aid levels have separate meanings: L0 through L4 describe dispenser setting, and a flashing maintenance reminder calls for a cleaning run. Clean food from the filter after each load; an obstructed external air gap or sink disposal belongs to the household drain path rather than an internal electronic code. LG's ThinQ feature updates can animate the outer display segments while the appliance is powered on. That rotating pattern is an update invitation, not a leak warning, and the error alert sound cannot be muted with ordinary chime settings. The table also names downloaded P cycles and CL Control Lock as normal states. A photograph should capture the floor lamp, the letters on the display and whether the door has opened before anyone assigns a fault meaning.
Use the expanded table for water and drying faults
For actual faults, owner pages 53 and 54 split the problem by system. IE concerns fill water; verify the supply and the inlet hose. OE concerns drainage; check the outlet, filters, air gap and disposal. bE can indicate detergent foam or poor leveling. AE is the leak row: shut off water and contact LG, because protective drain pumping can continue intermittently. FE means excessive supplied water, HE a heater circuit failure and tE a water-temperature sensor error. LE describes the wash motor and NE the Vario motor. This newer drying design adds F31 for the heated-air fan motor and F37 for the Auto Open Dry motor. These last two are service-directed component alerts, not instructions to force the door or buy a part from a generic list. The manual gives the error meanings but does not prove that every damp load has one of them. Copy the characters exactly, note the cycle phase and compare the observed panel with the LDNPH654S evidence before calling support.
Verified model details
Exact LDNPH654* owner plus LDNPH654S spec
Source for this detail · Source page: 116 settings, 44 dBA and floor status lamp
Source for this detail · Source page: 28Auto Open Dry changes the end-of-cycle signals
Source for this detail · Source page: 1F31 and F37 add drying-mechanism diagnostics
Source for this detail · Source page: 53IE/OE/AE remain separate water faults
Source for this detail · Source page: 54
This description summarizes the linked source documents; check each cited source for your exact model and region.
Manufacturer source
Open official source
Smart Top Control FlushFit Design Dishwasher - LDNPH654S | LG USA
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.