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nP

LG nP: No current detected at the heater

The dryer is not sensing electrical current at the heater, so it will not heat. This usually indicates a power-supply or house-wiring problem rather than a fault inside the dryer.

May need a technician

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Household outlet not supplying full 240V (one leg lost)
  2. Miswired or faulty outlet or breaker
  3. Loose or damaged power-cord connection
  4. Tripped breaker or blown fuse on one leg
  5. Failed heating element or internal wiring
The heat circuit — check in this order
1Thermal fuse
2Heating element
3Cycling thermostat
4Thermistor
5Control board

Schematic illustration of a typical dryer — not your exact model.

Before you start — unplug the dryer, and on a gas model shut off the gas supply. Let it cool first — the drum, heater and exhaust can be hot. If a step involves the heating element, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Reset the breakerTurn the dryer's double-pole breaker fully off for about 10 seconds, then back on, since a half-tripped breaker can cut one leg of power.
2Check the cord and outletConfirm the power cord is firmly seated in a grounded 240V outlet that matches the dryer's rating plate.
3Have an electrician verify voltageIf nP persists, have a licensed electrician confirm the outlet is supplying the correct voltage on both legs.
4Power reset the dryerUnplug the dryer for a short time, restore power, and start a heated cycle to see if it clears.
5Call for serviceIf the outlet is confirmed good and the dryer still will not heat, the heating element or wiring needs professional repair.

Still showing nP?

If you’ve worked through every step and nP keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

LG dryers. LG electric dryers; nP points to a no-current condition at the heater circuit.

FAQ

What does LG nP mean?

No current detected at the heater. The dryer is not sensing electrical current at the heater, so it will not heat. This usually indicates a power-supply or house-wiring problem rather than a fault inside the dryer.

What causes LG nP?

The most likely cause is household outlet not supplying full 240v (one leg lost). Other causes include Miswired or faulty outlet or breaker; Loose or damaged power-cord connection; Tripped breaker or blown fuse on one leg; Failed heating element or internal wiring.

Can I fix LG nP myself?

Some checks are DIY, but this code often points to an internal component, so it may need a qualified technician.