LG Dryer nP Error Code — What It Means
nP means the dryer detects no current at the heater. On a 240 volt electric dryer this often points to a power supply problem at the outlet or breaker.
If the power supply checks out, the next suspects inside the dryer are a blown thermal fuse or a heating circuit that has gone open.
Common Causes
- Half power at the outlet A tripped half of a double breaker leaves the motor running but the heater dead.
- Loose power cord A cord that is not fully seated at the terminal block drops one leg of the 240 volt supply.
- Blown thermal fuse A tripped thermal fuse cuts current to the heater until it is replaced.
- Open heating element A broken element draws no current and reads as no heat at the board.
- Damaged outlet wiring A burnt or loose connection at the wall outlet starves the heater of voltage.
Step-by-Step Fix
- Reset the breaker by switching the dryer circuit fully off for ten seconds, then back on.
- Test the outlet with a meter to confirm both hot legs deliver about 240 volts.
- Unplug the dryer and check that the power cord is tight at the terminal block.
- Open the cabinet and find the thermal fuse near the heater housing.
- Test the thermal fuse for continuity and replace it if it reads open.
- Test the heating element for continuity and replace it if the coil is broken.
- Reassemble and run a heat cycle to confirm the heater draws current.
Parts Often Needed
| Part | Notes |
|---|---|
| LG dryer thermal fuse | Amazon | Match to your model and clean the vent so the new fuse does not blow. |
| LG dryer heating element | Amazon | Replace if the element reads open on a meter. |
| LG dryer power cord | Amazon | Use a 4-wire 240 volt cord rated for your outlet if the old one is damaged. |
When to Call a Pro
If the wall outlet does not read a full 240 volts on both legs, stop and call a licensed electrician, since that is a house wiring problem and not a dryer fault. Hot or scorched outlet contacts also need an electrician before you run the dryer again.