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LG Dryer Error Code nP

DIY checks firstReviewed November 2026Checked against manufacturer documentation
What this code means
nP: No current detected at the heater: a home wiring or power supply problem (electric models)

The dryer is not seeing current at its heater, which almost always means the house supply is at fault, often one side of the 240V breaker tripped. Reset the breaker first; if the code stays, the cord wiring or the outlet needs an electrician.

Also shown as: NP

Fix level
DIY checks first
Start with the checks on this page. Testing or replacing a part is usually a technician job.
Time to run the checks
About 20–40 minutes
For the 4 checks on this page — not a full repair.
You may need
No special tools
The checks below use basic household items only.
Parts that may be involved
Power cord, Terminal block
Parts are model-specific; see the note below before ordering.

Common causes

  1. One leg of the 240V supply lost, such as a half-tripped double breaker or a blown fuse
  2. Power cord not connected correctly at the terminal block
  3. Incorrect house supply voltage
  4. Loose or damaged wall outlet connection

What to check, in order

Safety first. Switch the appliance off and unplug it before checking anything inside it. If you are not comfortable with any step, stop and call a technician.
  1. Switch the dryer's double breaker fully off for at least 10 seconds, then back on; one tripped leg is the classic cause
  2. Make sure the plug is pushed fully into a grounded outlet matching the 240V rating on the dryer's rating plate
  3. If the dryer was just installed, have the installer recheck the power cord connections at the terminal block
  4. If nP persists, have a licensed electrician verify the outlet is delivering the correct voltage

Clear the code and test

  1. Fix what the checks above found first. Clearing the code without fixing the cause only brings it back.
  2. Plug the appliance back in and restore its water supply if it has one.
  3. Run the shortest programme and watch the point where the code appeared before.
  4. If the programme finishes with no code, the fault is cleared. If the code returns, write it down before calling a technician — it speeds up the diagnosis.

When to call a professional

Most cases are solved by the checks above. Book a technician if any of these apply:

  • The code comes back after you have run the checks and a test cycle.
  • You smell burning, see sparks or scorch marks, or the breaker trips.
  • Water is leaking and you cannot stop it at the tap.
  • The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.

When you call, give the brand, the code nP, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.

Parts that may be involved

Power cordTerminal block

Parts are model-specific. Find your model number first — usually on a label inside the door, on the door frame or on the back — and match the part to that number before ordering.

Questions people ask about nP

What does nP mean on a LG dryer?

nP means: No current detected at the heater: a home wiring or power supply problem (electric models). The dryer is not seeing current at its heater, which almost always means the house supply is at fault, often one side of the 240V breaker tripped. Reset the breaker first; if the code stays, the cord wiring or the outlet needs an electrician.

Can I fix LG nP myself?

Start yourself: the checks on this page cover the causes you can reach without opening the machine up. If they point to a faulty part, testing or replacing it is usually a technician job.

How do I clear LG nP?

Fix the cause first — clearing the code on its own brings it straight back. Then restore power and water, run the shortest programme, and watch the stage where the code appeared. If the programme finishes with no code, it is cleared.

Sources checked

The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.

Other LG dryer codes

LG AddSteam feeder is empty: add water before running a steam cycleLG CLChild lock (control lock) is on: the control panel is locked, not a faultLG E13Drain problem on hybrid condensing dryers: the drain hose is blocked or the sump water is frozenLG FOLint filter is out: the dryer cannot detect the filter in its housingLG HSHumidity (moisture) sensor errorLG PFPower failure: the cycle was interrupted by a loss of powerLG PSImproper voltage in the power cord, often reversed cord wires at the terminal blockLG d75Flow Sense warning: the exhaust duct is about 75% blockedLG d80Flow Sense warning: the exhaust duct is about 80% blockedLG d90Flow Sense warning: the exhaust duct is about 90% blockedLG d95Flow Sense warning: the exhaust duct is about 95% blockedLG dEDoor error: the dryer does not detect the door as fully closedLG gASGas supply is turned off or interrupted (gas models only)LG tE1Thermistor (temperature sensor) errorLG tE2Thermistor (temperature sensor) error, often linked to steam cycles or cold conditionsLG tE3Thermistor (temperature sensor) errorLG tE4Steam generator thermistor failure (steam models; normally only shown in diagnostic test mode)