What HE (Dishwasher Heater Error) Means
HE means the heater that warms water supplied to the dishwasher has malfunctioned, per LG's dishwasher Help Library article, which states this requires inspection from a service technician.
Common Causes of HE (Dishwasher Heater Error)
- Water heater element has failed
- Heater control or wiring fault
🔧 One Safe Check You Can Try
There's no owner-level fix LG documents for HE - it's a heater-hardware fault requiring service.
⚠ Why You Shouldn't Go Further Than That
- LG goes straight to recommending service for this code, since diagnosing a failed heater element versus a control fault needs a technician's testing equipment.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.