What to check first
Stop normal operation while this warning is active. Follow only the documented safe checks or protective-drain instructions for the exact model.
Basic checks
- Observe the external plug, cord and outlet only from a dry safe position. Keep power off and call an electrician for looseness, heat, scorching, cracks, moisture or damage; do not open the plug, outlet or dryer.
- The textual code list specifies a grounded supply matching the 240-volt rating plate. Have a licensed electrician verify an uncertain supply; do not use a meter or infer electrical compatibility from appearance alone.
- Only when the correct dedicated breaker is safely identified and there is no damage, wet area or repeated trip, use the documented breaker path below. Do not perform a heating test while nP remains.
Applicability
Regional guidance · LG 240-volt electric dryers that display nP · United States
LG's US article references a grounded 240-volt outlet; do not transfer this interpretation to gas, heat-pump, combination, or other-market dryers without the exact model guide.
Reset or retry steps
- LG’s textual nP row directs switching the dedicated dryer breaker off for at least ten seconds, then restoring it. FaultCodeLab limits this to one attempt under safe dry conditions; the source does not describe it as proof that voltage or wiring is correct.
- If nP remains or the breaker trips again, leave the dryer unused and have a licensed electrician check the home outlet. LG service follows if the supply is verified but the dryer still fails to heat.
When to call a technician
- Use a licensed electrician if nP remains, the outlet or plug is damaged, the breaker trips again, or the home supply has not been verified.
- Request LG service if an electrician confirms the correct outlet supply but the dryer still shows nP or does not heat.
- Leave the area and call emergency services for fire, persistent smoke, or active sparking.
Before approving a paid visit, check warranty status and reviewquestions to ask before repair.
Can I keep using it?
Do not keep using the appliance if the code points to voltage, wiring, control power, burning smell, smoke, or a possible miswired supply.
- Safe next step
- Use only safe owner-level power checks, then involve a qualified technician or electrician when the source points to wiring or supply voltage.
- Stop when
- Breakers trip, lights dim, the appliance smells hot, wiring may be miswired, or the warning returns after a safe reset.
Do not keep running a dryer that overheats, smells hot, or has a severe airflow restriction warning.
A restricted vent can increase dryer fire risk; stop if there is burning smell, smoke, or repeated overheating. Persistent headaches, dizziness, nausea, or weakness near a gas appliance can be a carbon monoxide warning: leave the area, ventilate only if safe, and call emergency services or qualified service for a CO check.
- Safe next step
- Stop the cycle, let the dryer cool, clean the lint screen, and check only visible vent restrictions before retrying.
- Stop when
- Airflow stays weak, the dryer overheats, the outside vent cannot open, or gas/electrical supply concerns appear.
Safety boundaries
Safe first
- Match the exact brand, appliance type, and displayed code first.
- Use the model manual as the final authority for access steps.
- Disconnect power before any service-access step.
Do not do this
- Do not continue normal cycles while this code is active; any protective-drain sequence must follow the exact model instructions.
- Do not bypass locks, float switches, leak sensors, or other safety systems.
Common causes include
- LG’s textual nP section describes a home-wiring or supply condition with no heater current detected. It does not identify a failed cord, heater or board.
FAQ
What does LG Dryer code nP usually mean?
LG documents nP as a warning that the electric dryer does not detect heater current, often pointing to the home supply. Model context matters: LG's US guidance ties nP to no current detected at the heater on 240-volt electric dryers; PS is a separate improper-voltage display, not an alias.
Can I keep using the dryer with code nP?
Stop normal operation until the issue and safety warnings have been addressed. Follow only the documented safe checks or protective-drain instructions for your model. A 240-volt dryer circuit is not an owner voltage-testing task; do not use a meter or open an outlet, plug, or dryer panel.
When should I call a technician for LG nP?
Use a licensed electrician if nP remains, the outlet or plug is damaged, the breaker trips again, or the home supply has not been verified. A qualified technician may check the listed symptoms and source guidance against the model's service information before treating any part as failed.