LG Dryer Error Code Rapid Flashing

Rapid Flashing on an LG dryer indicates that the appliance is detecting an incorrect power supply frequency. The dryer requires a power supply of 50 to 60 Hz through a 2-wire plus grounding circuit. This is an electrical supply issue, not an internal dryer fault, and requires evaluation by a licensed electrician.

No, you should not continue operating the dryer while the Rapid Flashing error is active. Running an appliance on an out-of-specification power supply can damage internal components and creates a potential safety hazard. Stop using the dryer and contact an electrician before resuming operation.

Resetting the dryer will not resolve the Rapid Flashing error if the power supply frequency remains out of the required 50 to 60 Hz range. The error will return as soon as the dryer powers on and detects the incorrect frequency again. The underlying electrical supply issue must be corrected first before the error will clear and stay clear.

This error points to a problem with your home's electrical supply frequency, which is not something that can be corrected by adjusting the dryer itself. You will need a licensed electrician to test the frequency at your outlet and trace any problems back to the circuit or utility supply. Do not attempt to open the electrical panel or modify wiring without professional qualifications.

Costs will depend entirely on the underlying cause identified by the electrician. A basic service call to diagnose the power supply issue typically runs in the range of $75 to $200 or more depending on your location. If wiring, panel work, or a frequency converter is needed, costs can increase significantly. In the rare case that the dryer's control board needs replacement, board parts and labor generally range from $150 to $400.