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Error code · Dryer

LG Electric Dryer Code nP: No Heater Current

On LG electric dryers, nP means no current is detected at the heater. The dryer tumbles but does not heat, because the heater circuit is not getting power. This is normally a problem with the home…

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Code
nP
Appliance
Dryer
Brand
LG
Warranty
30-day workmanship

What nP means

On LG electric dryers, nP means no current is detected at the heater. The dryer tumbles but does not heat, because the heater circuit is not getting power. This is normally a problem with the home electrical wiring or the outlet and not the dryer. An electric dryer needs a grounded 240-volt outlet that matches the rating plate, and a missing leg of power produces exactly this result.

Common causes of nP

  • A cord that is not fully seated in the outlet
  • A dryer breaker that is tripped or weak
  • An outlet or house wiring that is not delivering 240 volts
  • A heater circuit in the dryer that is open
✓ One safe check you can try

1. Check that the power cord is pushed firmly into a grounded 240-volt outlet that matches the dryer's rating plate. 2. Switch the dryer's breaker off for 10 seconds, then back on. 3. Have a licensed electrician check the outlet if nP returns, and call us after that.

! Why to stop there
  • If the outlet tests correctly and nP continues, the heater circuit inside the dryer needs testing.
  • Home wiring is the usual cause, so we separate a supply problem from a dryer problem before anything is replaced.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
→Same appliance

Other Dryer codes

LE1LG Dryer Code LE1: Drum Motor LE2, AE, CE1LG Dryer Code LE2, AE, CE1: Compressor LE3LG Dryer Code LE3: Air Circulation Motor ndLG Dryer Code nd: Water Not Draining nE, nF, nCLG Dryer Codes nE, nF, nC: Wi-Fi and NFC PFLG Dryer Code PF: Power Failure PSLG Electric Dryer Code PS: Voltage Error tE1, tE2, tE3, tE4, tE5, tE6LG Dryer Codes tE1 to tE6: Thermistor
nPnP questions
Why does the dryer run but not heat?

With nP the heater is not receiving current. The drum motor uses a different circuit, so the dryer can tumble while heat is missing. The cord seating and the breaker are the quick checks first.

Should I call an electrician first?

If the outlet may be the problem, yes. The first tests are the cord seating and the breaker. A licensed electrician can confirm the outlet supplies 240 volts. If the outlet tests fine, the dryer itself is the next thing we test.

Is nP dangerous?

The code itself is not a danger, but do not open the dryer or work on the outlet yourself. Use only a licensed electrician for house wiring. Leave the outlet and the back panel closed.

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Still seeing nP?

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