What to check, in order
- Check the plug
The power cord should be pushed firmly into a grounded outlet that matches the dryer's rating plate: 240 V.
- Reset the breaker
Turn the dryer's circuit breaker off for at least 10 seconds to clear any power surge, then back on.
- Have the outlet checked
If it continues, LG suggests a licensed electrician checks that the outlet is supplying the right voltage.
When to call an engineer
If the outlet is fine and nP stays, LG says the dryer needs service.
Good to know
- nP and PS come from LG's US pages, which describe electric dryers on a 240 V outlet.
Checked against
Last reviewed September 2026. Manufacturers update their pages, and your manual is the final word.