LG Dryer nP Code: Meaning & Fixes
- Meaning
- No power to the heater: the dryer detects no current at the heater, which normally means a problem with the home's electrical supply or wiring.
- Can I fix it?
- Sometimes, may need a pro
- Also shown as
- NP
- Seen on
- LG electric dryers. The code concerns the 240 V supply that feeds the heater.
nP on an LG dryer means no current is reaching the heater. LG says this normally points to the home’s electrical supply, not the dryer. Check that the cord is fully plugged into a grounded 240 V outlet, then switch the dryer’s breaker off for at least 10 seconds. If nP stays, have an electrician check the outlet.
Try this first
- Check that the power cord is fully plugged into a grounded outlet that matches the 240 V rating on the dryer's rating plate.
- Switch the dryer's circuit breaker off for at least 10 seconds, then back on.
- Check the breaker panel for a tripped or half-tripped breaker on the dryer circuit.
- If nP stays, have a licensed electrician check that the outlet supplies the correct voltage.
- If the outlet is fine and the dryer still won't heat, request repair service.
What causes nP
| Cause | What you notice | What to check |
|---|---|---|
| Power cord not fully seated | nP after the dryer was moved or pushed back | Cord firmly in a grounded 240 V outlet |
| Tripped breaker or power surge in the breaker | Dryer tumbles but doesn't heat, nP on display | Breaker off for 10 seconds, then on |
| Wrong or missing voltage at the outlet | nP returns after the breaker reset | Licensed electrician measures the outlet |
| Fault inside the dryer's heating circuit | nP or no heat with a confirmed good outlet | Needs a technician |
Fix it step by step
Tap a step number to tick it off as you go. Ticks stay on this device.
-
Check the power cord
Make sure the cord is securely plugged into a grounded outlet that matches the dryer's 240 V rating plate. Don't use an adapter or extension cord.
Safety: Electric dryers run on 240 volts. Never touch a damaged cord, a scorched outlet or bare wiring.
-
Reset the breaker
At the breaker panel, switch the dryer's breaker off for at least 10 seconds to clear the surge, then switch it back on. A dryer breaker is usually a double breaker; make sure both halves move together.
-
Run a test cycle
Start a timed dry cycle and check whether the dryer heats and the nP code is gone.
-
Have the outlet checked
If nP returns, LG says the outlet may need to be checked by a licensed electrician to confirm the dryer gets the correct voltage. If the dryer was just installed, ask the installer to check the cord and outlet.
Safety: Measuring voltage at a 240 V outlet or terminal block is a job for an electrician. Don't open the outlet or the dryer's terminal block cover yourself.
-
Request service
If the outlet checks out and the dryer still doesn't heat, LG says the dryer needs repair service.
When to call a technician
DIY ends at the cord check and breaker reset. If nP stays, call a licensed electrician to check the outlet voltage. If the home's supply is correct and the dryer still won't heat, request LG repair service.
Questions people ask
Is nP a problem with my dryer or my house?
LG says nP normally indicates a problem with the home's electrical wiring, because no current reaches the heater. Start with the cord and breaker, then have the outlet checked before blaming the dryer.
What's the difference between nP and PS on an LG dryer?
nP means no current is detected at the heater. PS means improper voltage in the power cord, which LG says can be caused by the white and red wires being reversed on the terminal block. Both need a correct 240 V supply.
Why does my LG dryer run but not heat with nP?
The drum motor and controls can run while the heater gets no current. That's exactly what nP reports, often from a supply or breaker problem.