Step-by-Step DIY Fix Guide
- SAFETY: Unplug the dryer before checking the terminal block or any wiring connections.
- Go to your electrical panel and find the double-pole breaker for the dryer circuit.
- Turn the breaker fully OFF, then fully ON — do not just push it; flip it all the way off first.
- If the breaker immediately trips again or feels loose, call an electrician — do not reset it again.
- Check the wall outlet for signs of burning or corrosion.
- If the breaker reset does not restore heating, unplug the dryer and check the terminal block inside the dryer (the connection point where the power cord attaches) for loose or burned connections.
- If the terminal block connections appear intact, the thermal fuse or a wiring fault inside the dryer needs professional diagnosis.
If the warning comes back after restart
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
- Breaker resets but nP persists — fault is inside the dryer
- Breaker trips immediately on reset — electrical wiring fault requiring an electrician
What This Error Means
Error nP on your LG dryer means: The dryer is running but the heating element is receiving no power. Clothes will tumble but will not dry — the air is not being heated. This code indicates an electrical supply problem rather than a failed element. The dryer's self-diagnostic system has detected this condition and stopped or paused the cycle.
The most frequent cause is one leg of the 240v supply has failed — electric dryers require two 120v legs (240v total); losing one leg kills the heater but leaves the motor running. Work through the causes and fix steps below in order — many LG dryer errors are resolved without a service call.
Many cases of nP can be resolved by the homeowner. The steps below cover the full DIY checks — if they do not resolve the error, a technician is needed.
Electronics and sensor faults require professional diagnosis. A 2–3 minute power reset resolves transient faults. If the code returns after a reset, the physical component has failed and will not recover without replacement.
What users usually notice before this code
LG dryer warnings like this usually appear after airflow restriction, repeated lint buildup, interrupted heating, or a cycle that stops without returning to normal drying.
Common misdiagnoses
- Assuming the display code proves one exact failed part before the safe first checks are done.
- Replacing a lock or latch too early when alignment, trapped laundry, or startup conditions may still explain the warning.
- Treating a sensor-related warning as a guaranteed board failure before checking the simpler model-family causes first.
Most Likely Cause by Symptom
The LG dryer may stop, pause, or refuse to complete the cycle normally.
Likely cause: One leg of the 240V supply has failed — electric dryers require two 120V legs (240V total); losing one leg kills the heater but leaves the motor running
Check first: SAFETY: Unplug the dryer before checking the terminal block or any wiring connections.
The warning may return immediately because the appliance is detecting an internal fault.
Likely cause: Dryer circuit breaker partially tripped — the breaker appears on but one pole has failed internally
Check first: Go to your electrical panel and find the double-pole breaker for the dryer circuit.
Common Causes
- One leg of the 240V supply has failed — electric dryers require two 120V legs (240V total); losing one leg kills the heater but leaves the motor running
- Dryer circuit breaker partially tripped — the breaker appears on but one pole has failed internally
- Loose or corroded wiring at the dryer's terminal block or wall outlet
- Blown thermal fuse on the heater circuit — caused by a previous overheating event
What Not to Do
- Do not repeatedly reset a breaker that keeps tripping — it indicates a fault that needs to be diagnosed
- Do not bypass the thermal fuse — it is a safety device that prevents fires
Model and Display Variation Notes
Model-family notes
- LG dryer display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Common parts
- Thermal fuse if fuse has blown ($5–$15)
- Heating element if element has failed open-circuit ($20–$60)
- Terminal block if connections are burned or corroded ($10–$25)
Manual and model check
Check your exact model and manual before ordering any LG dryer parts.
Service option
LG service visit if the warning returns after the basic checks are complete.
Suggestions in this section are organized to support the troubleshooting flow first. Any future affiliate relationships should be disclosed clearly.
When Not to Keep Troubleshooting
Breaker resets but nP persists — fault is inside the dryer
- Breaker trips immediately on reset — electrical wiring fault requiring an electrician
How to Prevent It Recurring
- Clean the lint filter before every load and clean the exhaust duct annually — overheating caused by blocked airflow is the most common cause of thermal fuse failures
Related Error Codes
PS
The dryer has detected that the incoming power supply voltage is outside its acceptable operating range. The voltage is either too high, too low, or fluctuating in a way that could damage the electronics or heating system.
tE1
The dryer has detected a fault in one of its thermistors (temperature sensors). tE1 typically indicates the exhaust thermistor, tE2 the inlet thermistor, and tE3 a secondary thermistor — all three variants indicate the same class of problem at different sensor locations. The dryer has stopped to prevent overheating.
D80
LG dryer error D80 usually means the exhaust duct is heavily restricted and airflow is no longer safe or efficient.
Helpful guides for this problem
Guide
When repeated dryer error codes usually mean it is time to stop DIY troubleshooting
When a dryer warning has moved past sensible first checks and into the territory where more DIY retries stop helping.
Guide
What to check before replacing a washing machine door lock
What to rule out before ordering a new door lock, from alignment and load issues to startup problems that mimic a latch fault.
Guide
When to repair vs replace a refrigerator with repeated fault codes
How to think through the repair-versus-replace decision when the same refrigerator warning keeps coming back.
When not to keep pushing DIY troubleshooting
Use the code page for one careful first pass, then stop if the same warning returns or the appliance still cannot get back to normal operation.
Extra notes
- This page is based on LG support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-08
Based on: Based on LG support material and edited into consumer-safe guidance for the exact code family on this page.
Model coverage note: LG dryer code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.