HE3
LG
Heater Short / Ground Fault
Dishwasher shows HE3; may indicate heater circuit short or ground fault.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Heater element shorted to ground, Damaged heater wiring insulation, Moisture causing short at terminals
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker and do not operate the dishwasher until the fault is resolved.
- Inspect heater wiring: Access the underside and check the heater terminals and wiring for exposed copper, burn marks, or moisture.
- Test for ground fault: With a multimeter, check continuity between each heater terminal and ground. Any continuity indicates a shorted heater that must be replaced.
- Dry connections: If moisture is present, dry thoroughly and correct any leaks that may be dripping onto the heater area.
If the heater and wiring are good, the main control board may be misdetecting a short and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Heater Element
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