LDT7808ST HE error
Your LG LDT7808ST is showing HE. Before replacing parts, confirm the model tag matches LDT7808ST: Open the door and look on the inner door edge or left/right side of the tub opening. On this LG dishwasher, HE means Heater error — the dishwasher cannot heat wash water. The steps below follow the field-service order for the LDT7808ST platform — not the generic LG HE page. Cross-check part fit with LDT7808ST before ordering — use the model-specific parts diagram. If the code cleared after a reset but returned mid-cycle, treat that as a confirmed fault rather than a one-time glitch.
Parts for this repair
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Fix steps
- Verify the model tag reads LDT7808ST — Open the door and look on the inner door edge or left/right side of the tub opening.
- Reset HE: unplug the dishwasher or switch off the breaker for 5 minutes, then restore power.
- Remove and clean the tub filter, confirm the inlet valve screen is clear, and check the door gasket before assuming a pump or valve failure for HE.
- Cross-check part fit with LDT7808ST before ordering — use the model-specific parts diagram.
- Run a test cycle after repair. If the code returns, use the compatible parts below or the full brand code guide.
Professional assistance recommended
This issue may be unsafe for DIY repair. Follow the safety guidance above and contact a qualified technician.
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
FAQ
What does HE mean on a LG LDT7808ST?
Heater error — the dishwasher cannot heat wash water.
How do I reset HE on a LDT7808ST?
Unplug the dishwasher or switch it off at the breaker for 5 minutes, then restore power and restart. If HE returns on the LDT7808ST, the underlying fault is still present.
What part do I need for LDT7808ST HE?
Try the reset and troubleshooting steps first. HE on the LDT7808ST is not always a failed part.
Is HE on the LDT7808ST easy to fix?
Many owners fix this themselves with basic tools. Start with the reset and steps above, then check compatible parts below.