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Quick answer
A Normal-cycle display that reaches 36 or 41 minutes is not, by itself, a 36/41-minute fault code or proof that the control board has failed. LG identifies the LDP6797ST as a top-control dishwasher, and its owner manual says the displayed cycle time is estimated and can differ from actual running time because of options, soil level, water temperature, and water hardness. First record whether the number is counting down, paused, or unchanged, what the dishwasher is doing at that point, whether the panel remains lit, whether the door was opened, and whether water is left in the tub. A door interruption, delayed fill or heating, foam, or drain condition can make the timer appear to stop at a repeatable point; a truly dead panel, standing water, leak, burning smell, or repeated stop after the external checks needs service. Do not treat 36 or 41 as a component diagnosis, pull out the built-in dishwasher, enter service mode, or perform live tests.
Before you begin
Safety first
- Do not pull out the built-in dishwasher, remove enclosure panels, touch the pump or heater, disconnect pressurized water/drain lines, bypass the door or float protection, enter service mode, or perform live electrical tests. Stop for a leak, water near electrical parts, smoke, burning or chemical smell, sparking, unusual grinding, a hot/damaged cord, or a breaker trip.

Work through in order
Diagnostic checks
Use only checks that match the exact appliance or system and its official guide.
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Check 1
Confirm the rating label reads LDP6797ST and start a single Normal cycle only if there is no leak, burning smell, smoke, unusual grinding, or electrical warning. At the first stop, write down whether 36 or 41 is counting down, frozen, or replaced by dashes/another display; note the lit controls, beeps, door position, cycle options, and whether the tub contains water.
Expected result: The model matches, the number is an estimated-time value that later changes, or the display freezes/goes dark or shows a different code at the stop.
Next step: Preserve a photo or video of the display and the full timeline. If the model or display identity is uncertain, use the exact LG model literature before interpreting the stop; if the panel is dark with power present, arrange service without opening the unit.
Stop if: Stop immediately for a leak, smoke, burning or chemical smell, sparking, a hot or damaged cord, repeated breaker trips, or water near electrical parts.
Why this matters
Why: LG's model manual and indicator guide treat the display as estimated time, not a component code. A changing estimate is a timing observation; a dead panel or a separate code is a power/control or model-specific error path.
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Check 2
When the stop occurs at 36 or 41, observe from outside whether the dishwasher is silent or still making a normal fill, wash, heat, or drain sound, and whether the displayed estimate changes after several minutes. Do not open the door while it is operating just to listen; if the door was opened, record the time and close it fully before using the documented Start control.
Expected result: The number changes after a pause and the cycle continues, the unit was interrupted by an opened door, or it remains unchanged with no normal operation.
Next step: If the door was opened, follow the manual's four-minute Start requirement once. If the display remains frozen or the unit shuts down, record the exact phase and move to the water/drain and service branches; do not repeatedly open and restart it.
Stop if: Do not reach into the tub while it may be running, defeat the door switch, or remove an enclosure panel.
Why this matters
Why: A changing estimate or a documented door interruption is consistent with cycle timing/continuation rather than a fixed 36/41 fault. A persistent unchanged display with no operation is a real incomplete-cycle symptom and needs power, latch, water, drain, or service triage.
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Check 3
With the appliance stopped and power isolated only from a dry, accessible position, check for standing water above the filter and inspect only the accessible filter area, visible drain hose, and sink-side air gap or disposal connection for residue, kinks, or a restriction. Do not pull the built-in dishwasher forward or touch the pump.
Expected result: Water remains above the filter, a visible drain hose is kinked/restricted, the air gap or disposal is blocked, or the accessible drain path is clear.
Next step: Correct only an obvious accessible restriction as the manual permits, then run at most one monitored normal cycle. If water remains, the stop returns at the same point, or internal access would be required, arrange service.
Stop if: Do not disconnect a water or drain hose, remove the lower cover or pump, work under the unit, or perform live electrical measurements.
Why this matters
Why: LG lists drain-hose, air-gap/disposal, and filter restrictions as causes in its exact-family manual. A matching visible restriction makes an outlet path more plausible; a clear path does not identify an internal pump or control failure.
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Check 4
If there is no standing water, compare the stop with the water and door conditions without changing hidden settings: note whether the household supply is on, whether the visible inlet hose is kinked, whether the door is fully latched, and whether the display later shows an inlet, drain, or other code. Do not diagnose the inlet valve or heater from a fixed minute alone.
Expected result: The supply is restricted, the door does not latch, an inlet/drain code appears, or the visible supply and door conditions are normal with no code.
Next step: Correct only the visible supply or latching condition permitted by the manual. For a recurring code or a normal external check with a repeat stop, retain the timeline and arrange qualified LG service.
Why this matters
Why: LG's manual links incomplete operation to door state and identifies inlet and drain hose/supply conditions for corresponding errors. Normal external conditions with a repeat stop shift the question to model-specific service rather than a guessed valve, heater, sensor, or control board.
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Check 5
If the panel remains responsive and there is no hazard, use the manual's documented cancellation or restart behavior once rather than repeatedly resetting the breaker. Record whether the tub drains and whether the next Normal cycle again pauses at 36 or 41 with the same physical result.
Expected result: The one restart completes, the displayed estimate changes and the cycle continues, or the same stop and symptom recur.
Next step: Arrange service for a recurrence, persistent standing water, a dead/unresponsive panel, or a code that returns. Provide the exact model, options, stop minute, actual stage, water state, door/power history, and external checks.
Stop if: Do not repeatedly cycle power, enter service mode, change wiring, bypass a latch or float, or continue operation after a leak or electrical warning.
Why this matters
Why: A one-time recovery can reflect an interruption, while a recurrence at the same stage is evidence of an unresolved condition—not proof of a control-board failure.
Use your observations
Decision map
Find the observation that best matches what you see, then follow the next safe action.
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PATH 01Next step
What you see
The display reaches 36 or 41, the estimate later changes, and washing, heating, or draining continues without water or electrical symptoms.
Do this next
Monitor one cycle and record the actual completion time and selected options. Do not replace a part from the minute shown.
Why this path and its safety boundary
Why it matters: This is consistent with LG's estimated-time behavior and a stage taking longer than the initial estimate, not a 36/41 fault code.
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PATH 02Next step
What you see
The stop follows a door opening, the door was not fully latched, or Start was not pressed within the manual's four-minute window.
Do this next
Close the door fully and use the documented Start behavior once. If it will not latch or the cycle stops again with the door closed, arrange service without bypassing the latch.
Why this path and its safety boundary
Why it matters: The incomplete cycle can be an interruption/door-state path; it is not enough to identify a controller or latch part.
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PATH 03Next step
What you see
The dishwasher pauses at the same minute with standing water, a visible drain restriction, or an inlet/drain code.
Do this next
Correct one obvious accessible restriction only as the exact manual permits and monitor one restart. If water remains, the code returns, or internal access is needed, stop and call service.
Why this path and its safety boundary
Why it matters: A matching water or drain path is more plausible than a generic timer failure; LG's manual lists accessible hose, air-gap/disposal, supply, and filter checks for these paths.
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PATH 04Next step
What you see
The panel goes dark or stays frozen, the same stop returns with normal visible water/door conditions, or there is a leak, burning smell, smoke, sparking, unusual noise, or repeated breaker trip.
Do this next
Keep the dishwasher off and arrange qualified LG or appliance service. Isolate power only from a dry, accessible position if safe, and provide the full time-and-stage timeline; do not reopen or rerun it to reproduce the fault.
Why this path and its safety boundary
Why it matters: The estimated minute cannot distinguish a power, control, latch, heating, motor, water-containment, or other internal condition, and a safety warning overrides further testing.
Helpful context
Understand the symptom
Why the same minute can be misleading
The exact appliance is an LG LDP6797ST, not a generic LG dishwasher. The official LDP6797ST manual shows that Normal has a broad wash-time range and specifically warns that the displayed and actual times can differ. LG's control-panel guide says the display shows the estimated total time at selection and the remaining estimated time during operation. Reaching 36 or 41 therefore identifies a repeatable observation point, not a named failed part. The useful question is whether water is entering, heating, circulating, draining, or whether the controls have actually stopped responding at that point.
Use the stage and result to choose the branch
LG's manual separates a dishwasher that did not finish because the door was opened from inlet, drain, and other error-code paths. It says an opened door during a cycle requires the Start key within four minutes or the machine turns off and loses the settings. The same manual lists visible checks for a kinked or restricted water inlet or drain hose, a clogged air gap or disposal, and clogged filters. Those checks can explain a stage-related stop without proving a valve, heater, pump, sensor, or control fault.
When checks do not resolve it
Need a professional?
Arrange qualified LG or appliance service when the estimate remains frozen with no operation, the panel goes dark, the same stop recurs after one permitted external check/restart, standing water remains, a code returns, the door will not latch, or any leak/electrical/fire warning appears.
Safety scope: Do not pull out the built-in dishwasher, remove enclosure panels, touch the pump or heater, disconnect pressurized water/drain lines, bypass the door or float protection, enter service mode, or perform live electrical tests. Stop for a leak, water near electrical parts, smoke, burning or chemical smell, sparking, unusual grinding, a hot/damaged cord, or a breaker trip.
Have this ready
- Provide the complete LDP6797ST label, market, Normal options, whether 36 or 41 was counting down or frozen, display/light state, exact stop stage and sounds, door-opening and power-interruption history, water remaining, visible supply/drain findings, and what changed after the one restart.
Common questions
FAQ
Is 36 or 41 minutes an LG dishwasher error code?
Not by itself. LG's LDP6797ST manual and control-panel guide describe the displayed value as estimated cycle time, which can change with options, soil, water temperature, and water hardness. The number must be tied to a frozen display, actual stage, code, or physical symptom before it means anything diagnostic.
Why does the dishwasher appear to stop at the same minute?
A stage can take longer than the estimate, or the machine may be waiting on a door interruption, fill, heating, or drain condition. Record whether the number changes, whether the panel remains responsive, and whether water is left in the tub instead of treating the minute as a failed part.
Should I replace the LG control board because the timer freezes?
No. A frozen estimate can result from several paths and does not identify the control board. Check only the documented external door, supply, drain, filter, and water observations; a recurring stop or any hazard should go to qualified service.
Read the exact guide
Official sources
- Top Control Smart Dishwasher - LDP6797ST | LG USALG Electronics · Opened official LG USA product page confirming LDP6797ST as a top-control dishwasher; it does not define 36/41 as a fault code.
- OWNER'S MANUAL DISHWASHERLG Electronics · Opened official LG owner manual whose model list includes LDP679#**; it supports the LDP6797ST cycle-time, door, inlet, drain, water-temperature, filter, and safety guidance used here.
- LG Dishwasher - Understanding Control Panel IndicatorsLG Electronics · Opened official LG USA support article; LG notes that indicators vary by model and describes the display as estimated cycle/remaining time, so it supports interpretation of the 36/41 observation but not a component diagnosis.
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