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
- Check from outside the appliance that the plug is fully seated in the matching grounded outlet; if the plug or outlet is loose, hot, scorched, or cracked, leave the breaker off and call an electrician.
- Compare the dryer's rating plate with the outlet type without opening either one; if the outlet does not match the listed 240-volt supply, do not use the dryer and contact a licensed electrician.
- Check the dedicated dryer breaker from the electrical panel; if it appears tripped, switch it fully off once, wait at least ten seconds, and restore it once.
- Observe the display after that single breaker reset; if nP remains or returns, stop without another heating cycle and arrange electrical and appliance service.
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 allows one breaker reset after the external plug check; a reset does not verify outlet voltage or internal wiring.
- Leave the dryer off if nP remains, the breaker trips again, or any plug, cord, or outlet damage is visible.
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
- Dryer plug not fully seated in the rated grounded outlet
- One side of the dedicated dryer circuit interrupted or tripped
- Home outlet or branch-circuit supply issue
- Dryer heating-power path requiring service after the home supply is verified
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 Home dryer circuit or outlet, Power cord, Heating power-supply path, and Control system against the model's service information before treating any part as failed.