Lg ldts5552s dishwasher heater circuit failure — dishwasher not drying properly · he

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Photograph the entire display and record the exact model as LDTS5552S, the cycle and option selected, and whether HE appears during washing, near the end of the cycle, or after the cycle stops. Confirm that the characters are HE rather than tE, F31, F35, or a drying-option indicator.

   Expected result: HE is clearly displayed on the LDTS5552S, or the code and model identity are uncertain.

   Next step: If HE and LDTS5552S are confirmed, continue only with the non-invasive observations below and plan for service. If not, use the matching model manual before applying this article.

   Why this matters

   Why: LG lists HE as a dishwasher heater error and warns that code meanings can differ by model; an uncertain display should not be interpreted from a generic LG code list.

2. Check 2

   Note the result of the affected cycle without touching internal parts: whether the water appears not to heat, dishes stay wet, steam is absent when the selected cycle normally produces it, or the cycle stops with HE. Do not infer a specific heater, pump, sensor, or control part from the drying symptom alone.

   Expected result: HE coincides with unheated wash water or a stopped cycle, or the only complaint is damp dishes with no HE code.

   Next step: Record the cycle stage and result for the technician. Do not keep running heated cycles to reproduce the error and do not order a drying or heater part based only on wet dishes.

   Why this matters

   Why: LG ties HE to water that is not being heated, and the LDTS5552S has a hidden water heater. A damp-dish complaint without HE can have a different drying or loading path; HE makes the heater circuit the service priority.

3. Check 3

   With the dishwasher off, inspect only the accessible exterior and floor area for a leak, water near electrical connections, a damaged cord, burning odor, scorch mark, repeated breaker trip, or a door that cannot close normally. Do not pull out the built-in dishwasher or remove enclosure panels just to inspect the heater.

   Expected result: A leak, electrical or heat symptom, damaged connection, abnormal breaker behavior, or a normal dry exterior is present.

   Next step: For any leak or electrical/heat symptom, stop using the dishwasher and isolate power only by the safe household disconnect described for the installation. Otherwise retain the code record and request qualified LG appliance service.

   Why this matters

   Why: These observations determine urgency but do not distinguish the hidden heater from its wiring, sensor, control, or circulation assembly. A normal exterior does not make repeated HE safe to ignore.

4. Check 4

   Use the exact LDTS5552S support page to keep the model-specific owner's manual and warranty information with the service request. Provide the code photograph, cycle stage, drying result, recent breaker events, and any safe exterior observations; do not perform live resistance or voltage tests.

   Expected result: The manual and model identity are available, or the exact model documentation cannot be matched.

   Next step: Arrange qualified service for confirmed HE and give the technician the recorded evidence. If identity is uncertain, resolve the model first and do not run repeated heated cycles.

   Why this matters

   Why: LG provides model-specific manuals and support for LDTS5552S, while the general error guide says HE requires technician inspection. Missing documentation is a reason to pause diagnosis, not to substitute a manual from another LG platform.