Samsung Dishwasher Error Code HE (Heater)

The HE code means the dishwasher detected a heater error during the wash cycle. Specifically, it triggers when the water temperature increases by 4°C or less within the first 10 minutes after heating starts. The control board monitors this temperature rise and stops the cycle when it falls below the expected threshold. The most likely culprits are the heating element, heater relay, wire harness, or the main control board.

You should not continue running the dishwasher when the HE error is active. The cycle has been interrupted because the heating system is not functioning correctly, meaning dishes will not be properly cleaned or sanitized. Running cycles with a known electrical fault in the heating circuit can also risk further damage to related components.

Resetting the dishwasher may temporarily clear the HE code, but the error will return if the underlying problem has not been fixed. A reset does not repair a failed heating element, defective relay, or damaged wire harness. It is best to use a reset only as part of the diagnostic process, not as a permanent solution.

Some causes of the HE error are DIY-friendly, such as reseating loose heater terminal connections or inspecting the wire harness for visible damage. Testing the heating element for continuity with a multimeter is also within reach for experienced DIYers. However, replacing the heater relay or main control board typically requires more advanced electrical knowledge and comfort working with appliance components.

Repair costs depend on which component has failed. A replacement heating element typically runs in the range of $20 to $60 for the part alone. A main control board replacement can cost between $80 and $200 or more for the part. Adding professional labor will increase the total, generally ranging from $100 to $300 depending on the diagnosis and the specific repair needed.