LG Washer Error Code dHE

The dHE code on an LG washer-dryer combo unit indicates a dryer heater error related to the fan motor circuit. Specifically, it signals that the main control board cannot detect a proper electrical connection through the fan motor harness. The cause is typically a disconnected, loose, or open-circuited harness between the fan motor assembly and the main PWB.

When the dHE error is active, the drying function of the combo unit will not operate correctly. The washing function may still work, but running the machine through a drying cycle with this fault present is not recommended, as the fan motor circuit is not functioning as intended. Address the wiring issue before using the dryer portion of the unit.

Repair costs vary depending on the root cause. If the fix is simply reseating a loose harness connector, there may be no parts cost and only a service call fee, typically in the range of $75 to $150. If the wiring harness needs replacement, parts and labor combined can range from $100 to $300. A main PWB replacement is the most expensive scenario, potentially ranging from $200 to $500 or more depending on the model.

Some causes of the dHE error, such as a loose or disconnected harness connector, can be addressed by a confident DIYer who is comfortable working inside the machine after unplugging it. However, diagnosing an open circuit in the wiring requires a multimeter and some electrical knowledge. If the wiring harness needs replacement or the main PWB is suspected, a qualified technician is recommended.

Unplugging the unit for a few minutes may temporarily clear the code, but if the underlying wiring fault is still present, the dHE error will return once the drying cycle is attempted again. A reset does not repair a disconnected harness, broken wire, or faulty connector. The physical cause must be found and corrected for the code to stay cleared.