LG Dryer nP — What It Means & How to Fix It
nP means an LG dryer isn't detecting any current at its heater, which normally points to the home's electrical supply — a half-dead 240-volt circuit, a tripped breaker, or a loose outlet connection — rather than the dryer itself, so the safe checks are the cord and breaker before an electrician.
What this code means
An electric dryer needs both legs of its 240-volt supply to heat, and nP is logged when the control sees no current flowing through the heater. That usually means only half the circuit is live — a common symptom of a tripped double-pole breaker, a worn outlet, or a wiring fault in the home. Because the remedy lives in the mains supply, it's an electrician's territory once the basic resets don't help.
nP points at the electrical supply feeding the heater, not a part you should open the dryer to reach. Confirm the cord is seated and the breaker is fully reset first; anything beyond that — testing the outlet voltage or the terminal block — is for a licensed electrician.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Tripped or half-tripped double-pole circuit breaker | Very common | Yes — reset |
| Only one leg of the 240V supply live, giving partial power | Common | Partly — electrician check |
| Worn or damaged outlet, or a loose terminal-block connection | Occasional | No — electrician job |
| Home wiring fault on the dryer circuit | Occasional | No — electrician job |
| Failed heating element or heater relay if the supply checks out | Less common | No — technician job |
What you can try yourself
- Confirm the power cord is fully and firmly seated in the outlet, matching the dryer's 240-volt rating plate.
- At the home's electrical panel, switch the dryer's breaker fully OFF for at least ten seconds, then back ON — a double-pole breaker can trip on just one side and needs a full reset.
- Restore power and run a heated cycle to see whether nP clears and the dryer warms up.
- If nP stays, stop here: have a licensed electrician check that the outlet is delivering the correct 240 volts on both legs — this is not a safe DIY measurement.
- If the supply tests good, the fault is inside the dryer, at the heater or relay, and needs an appliance technician.
When to call a technician
- nP remains after a full breaker reset and a firm cord connection.
- The dryer tumbles but never heats.
- The outlet, plug, or cord shows scorching, melting, or a burnt smell — leave it off and call an electrician.
Typical professional repair cost: An electrician's outlet or circuit repair typically runs $150–$350; if the fault is a dryer heating element or relay instead, expect roughly $150–$300 with labor.
Frequently asked questions
What does nP mean on an LG dryer?
nP means no current is reaching the heater, so the dryer runs but won't heat. It almost always traces to the electrical supply — a half-tripped 240-volt breaker, a worn outlet, or a home wiring fault. Reset the breaker fully and check the plug; if it stays, an electrician should check the outlet voltage.
Why does my LG dryer run but not heat with an nP code?
Electric dryers need both legs of their 240-volt circuit to make heat. nP means one leg isn't delivering current, so the drum turns on the live half while the heater stays cold. A fully reset breaker fixes many cases; a persistent nP means the outlet or home wiring needs a licensed electrician.
Can I fix an nP code myself?
You can safely do the first two steps — reseat the cord and fully reset the double-pole breaker. Beyond that, nP involves 240-volt mains wiring, which isn't safe to test or repair yourself. If resetting the breaker doesn't restore heat, call a licensed electrician to check the outlet and circuit.
Related LG codes
- LG Dryer d80 d80 is LG's Flow Sense system telling you the exhaust duct is about 75–80% restricted: the dryer keeps running but dries slowly, so treat it as an early warning to clean the lint filter and the full vent line before the blockage gets worse.
- LG Dryer d90 d90 — and the more severe d95 — is LG's Flow Sense system reacting to a badly blocked exhaust of 90% or more by cooling the dryer down and stopping the cycle, so unlike the milder d80 you have to clear the vent before it will run properly again.
- LG Dryer dE dE tells you an LG dryer can't confirm its door is latched shut, so it won't spin the drum — usually because laundry is caught in the seal, the door wasn't pushed firmly enough, or the door switch is worn.
- LG Dryer tE1 tE1, and the related tE3, means an LG dryer has detected a problem with its thermistor — the sensor that tracks drum temperature — so a factory reset clears a one-off glitch, but a code that keeps returning points to a failing sensor for a technician.
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