LG Washer Error Code dH

The dH code on an LG washer stands for dry heating error. It indicates a problem in the electrical circuit between the fan motor assembly and the main PWB (control board), which is required for the drying cycle to operate. The cause is typically a disconnected, poorly contacted, or damaged fan motor harness connector or wiring.

You can still use the washer function safely for normal wash cycles, as the dH error specifically affects the drying system. However, you should avoid attempting to run a drying cycle until the fault is resolved, since the fan motor circuit is not operating correctly and continued use in drying mode could potentially cause further damage.

If the fix is simply reseating a disconnected connector, the repair can be done at no parts cost, with only labor or your own time involved. If the harness wiring needs replacement, parts typically range from $20 to $80 depending on the specific harness. A failed fan motor assembly can cost $50 to $150 or more for the part, plus labor if a technician is involved.

In many cases, yes. Start by unplugging the washer, then inspect the thermistor connector and the fan motor harness connectors for any that are loose or fully disconnected. Reseating connectors is a straightforward task that requires no special tools. However, if wiring is found to be cut or a component has failed, professional repair or parts replacement may be needed.

A reset may temporarily clear the dH code from the display, but the error will return as soon as the washer attempts another drying cycle if the underlying wiring or connection issue has not been corrected. The fault must be diagnosed and the root cause repaired for the error to stay clear.