LG Dryer Error Code NC — What It Means & How to Fix It

What Does This Error Mean?

The NC error on an LG smart dryer means the dryer cannot connect to your Wi-Fi network. NC stands for Network Connection failure. This does not affect the dryer's ability to run normally — it only means the smart features (app control, remote monitoring) are unavailable.

Affected Models

DLEX7900BE
DLGX7901BE
DLEX5500V
DLEX6500V
LG ThinQ-enabled smart dryers

Common Causes

The Wi-Fi password was changed and the dryer still has the old password saved
The home Wi-Fi router is too far from the dryer, causing a weak signal
The router was restarted and the dryer lost its connection
The dryer is connected to a 5GHz Wi-Fi band — LG ThinQ requires a 2.4GHz connection
The Wi-Fi module inside the dryer has a temporary fault

How to Fix It

Confirm your home Wi-Fi is working on other devices.

If your phone or TV also lost internet, the issue is your router, not the dryer.
Restart your Wi-Fi router by unplugging it for 30 seconds.

Then wait 2 minutes for it to fully reconnect. Many NC errors clear after a router restart.
Make sure the dryer is connecting to a 2.4GHz Wi-Fi network — not 5GHz.

LG ThinQ only supports 2.4GHz. On your router, look for a network ending in '2G' or '2.4G' and connect to that one.
Re-register the dryer in the LG ThinQ app.

Open the LG ThinQ app, remove the dryer, and add it again. Follow the on-screen pairing instructions.
If the dryer still won't connect, hold the Wi-Fi button on the dryer for 5 seconds to reset the network module.

This varies by model — check your manual. Then re-pair using the ThinQ app.

When to Call a Professional

If reconnecting the dryer to Wi-Fi consistently fails across multiple attempts, the Wi-Fi module may have failed. A technician can replace the Wi-Fi communication board. This repair typically costs $120–$220. Note: the dryer works perfectly without Wi-Fi — this repair is only needed if smart features are important to you.

Frequently Asked Questions

Will my LG dryer still work without Wi-Fi?

Yes — absolutely. Wi-Fi is only needed for smart features like remote control through the LG ThinQ app. All drying cycles, settings, and functions work normally without a Wi-Fi connection. The NC error is a notification, not a fault that affects drying performance.

Why won't my LG dryer connect to my 5GHz Wi-Fi?

LG ThinQ smart appliances only support 2.4GHz Wi-Fi connections. This is a hardware limitation — the Wi-Fi module in the dryer does not include a 5GHz radio. You need to connect to the 2.4GHz band on your router. Most routers broadcast both 2.4GHz and 5GHz — they usually appear as separate network names.

I changed my Wi-Fi password. Why does my LG dryer show NC now?

The dryer still has your old Wi-Fi password saved. You'll need to reconnect it using the new password. Open the LG ThinQ app, remove the dryer from the device list, then add it again and enter your new password during setup.