- Appliances
- Dryers
nP
LG nP on dryer: no current reaching the heater
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
Your LG dryer shows nP because it detects no current at the heater. Check that the plug is fully in a grounded outlet and switch the dryer breaker off for at least 10 seconds. If it stays, an electrician should check the outlet.
Safety first
Stop and check this first
- Do not open the dryer terminal block or the wall outlet to measure. It is mains voltage: an electrician checks the outlet and service checks the dryer.
Safe checks you can perform
- Plug and grounded outlet
- Breaker off for 10 seconds
- Call the electrician
Leave these tasks to a qualified professional
- Do not attempt this professional task: Outlet voltage measurement
- Do not attempt this professional task: Repair if the outlet is fine
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Outlet voltage measurement
What they doAn electrician measures the voltage at the dryer outlet with instruments and compares it with the rating plate, as LG instructs.
They must show youthe measured value against the voltage on the rating plate.
In writingthe measurement, what was corrected in the wiring and whether the outlet now complies.
Repair if the outlet is fine
What they doIf the outlet supplies the correct voltage and nP stays, LG service checks the dryer.
They must show youthe electrician measurement and the fault reproduced.
In writingthe cause found, the reference of any replaced part and a drying test with heat.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
- 1
Plug and grounded outlet
No special tools
Procedure
- Who:
- you.
- How:
- without opening anything, check that the plug is fully in and that the outlet is grounded and suits the dryer rating plate, as LG instructs.
- Result that matters:
- a plug firmly in the right outlet.
- If it was loose and nP clears once it is in:
- that was the cause.
- If it was fine and nP stays:
- move on to the breaker reset.
- Evidence to keep:
- a photo of the rating plate and the plug.
Evidence: LG USA dryer error code list
- 2
Breaker off for 10 seconds
No special tools
Procedure
- Who:
- you.
- How:
- at the electrical box, switch the dryer breaker off for at least 10 seconds and back on, as LG instructs.
- Result that matters:
- whether the dryer heats without showing nP.
- If it heats without a code:
- it was a temporary breaker state; watch whether it repeats.
- If nP stays:
- an electrician needs to check the outlet.
- Evidence to keep:
- a note of the date and the result of the reset.
Evidence: LG USA dryer error code list
- 3
Call the electrician
No special tools
Procedure
- Who:
- you, only to call and prepare the visit.
- How:
- leave the dryer unplugged and ask a licensed electrician to check the outlet, as LG instructs.
- Result that matters:
- the electrician knows the plug and the breaker are already ruled out.
- If the dryer is new:
- also call whoever installed it.
- If it has worked for a while:
- say since when nP has appeared.
- Evidence to keep:
- photos of the code and the rating plate.
Evidence: LG USA dryer error code list
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- LG
- Product type
- Dryers
Known code variants
- error nP secadora LG
- LG dryer nP error
- LG nP dryer
- LG nP secadora
- NP
What it means
LG explains that nP means no current is being detected at the heater, and that it normally indicates a problem with the home electrical wiring. Its steps are to check the cord is securely plugged into a grounded outlet matching the rating plate (240 V on the US models it documents), switch the dryer breaker off for at least 10 seconds and, if it continues, have a licensed electrician check the outlet voltage. Only if the outlet is fine does LG refer you to repair. The code alone does not prove a dryer fault.
Warnings and stop conditions
- Higheditorial warning
Do not open the dryer terminal block or the wall outlet to measure. It is mains voltage: an electrician checks the outlet and service checks the dryer.
Evidence: LG USA dryer error code list
Symptoms and causes
Probable causes · in order
- Plug not properly connectedPossible
The cord is not fully in the outlet or the outlet does not suit the dryer. You rule it out by looking at the plug, without opening anything.
Evidence: LG USA dryer error code list
- Breaker that needs a resetPossible
LG says to switch the dryer breaker off for at least 10 seconds. If the dryer then heats without nP, the cause was temporary.
Evidence: LG USA dryer error code list
- Wrong voltage at the outletCommon
The code stays after the reset. LG points to the home wiring, which an electrician must check by measuring the outlet voltage.
Evidence: LG USA dryer error code list
Virtual technician
Does nP still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
LG Electronics · 2025 · official_doc
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