What to check first
Can I keep using it?
Do not keep using the appliance while this warning is active.
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 keep running the appliance while this code is active.
- 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
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.
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.
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?
Do not keep using the appliance until the visible issue has been checked and the relevant safety warnings have been addressed. 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.