Troubleshooting LG Dryer Error Code D90

Fleet Appliance
May 4, 2023
Dryer Repair

This guide covers all major LG dryer models, including:

  • LG DLEX9000V
  • LG DLEX3700W
  • LG DLEX8100V
  • LG DLE7200VE
  • LG DLE3500W
  • LG DLEX4370K
  • LG DLE7300WE
  • LG DLE3500V
  • LG DLGX8101V
  • LG DLEX7800WE

Error code D90

If your LG dryer is displaying the error code D90, it may be time for a little troubleshooting. This particular error code indicates that the dryer’s sensors have detected an issue with the duct, most commonly indicating a blockage in the pipes. In most cases, this can be resolved by simply resetting the dryer and clearing any debris from the venting system. Luckily, this is a relatively easy repair that can be completed in just a few minutes.

Duct blockages 

If your LG dryer is displaying the error code D90 it usually means that the ducting system is 90% blocked. Blocked dryer vents are a common problem that can cause a variety of issues. If your dryer vent is blocked, it can lead to reduced air flow, which in turn can lead to longer drying times and increased energy consumption. Additionally, a blocked dryer vent can also lead to lint buildup, which is a fire hazard. 

There are a few different things that can cause your dryer vent to become blocked, such as lint buildup, bird’s nests, or debris. To prevent this from happening, first, you should clean out your lint trap after every load of laundry. Secondly, you should have your dryer vent professionally cleaned on a yearly basis. Lastly, you should make sure that there is nothing blocking the path of the ventilation ducts leading from your dryer to the outside of your home.

3 Simple steps to unclog your dryer vent

It’s important to note that preventing a blocked dryer vent is much easier than trying to unclog it. Here are simple steps you can take to help prevent a clogged dryer vent:

1. Clean the lint filter after every load

This should be a no-brainer, but many people forget to clean the lint filter before or after each load of laundry. Taking just a few minutes out of your laundry routine to clean the lint trap can make a huge difference in keeping your dryer vent clear.

2. Have your dryer vent professionally cleaned

Hiring professionals who specialize in dryer vent cleaning periodically can help keep your system free from blockage and buildup. Depending on how often you do laundry, you may want to have this done once or twice a year.

3. Make sure there are no obstructions near the exterior vent

Make sure that there are no shrubs, vines, or lawn furniture blocking your exterior vent as this can cause clogs and restrict air flow. Additionally, inspect the area for any bird nests or debris that may need to be removed.

By following these steps, you can greatly reduce the risk of having your dryer vent become blocked and save yourself time, money, and hassle. It’s always best to take proactive measures now so that you won’t have to worry about it later.

When to call a professional 

If you have tried to check the ducts for blockages and have not been able to eliminate the source of the obstruction, or if your duct system is very complicated, it may be time to call a professional. Professional technicians come equipped with powerful tools that allow them to clear out any clogs in your dryer vent quickly and efficiently. This ensures that you don’t have to worry about damaging your dryer or causing any further damage while trying to clear out a clogged vent. 

Letting a professional technician handle your blocked dryer vent also means you’ll have peace of mind knowing that the job has been done correctly and safely. This way, you won’t have to worry about potential issues arising from an improperly cleared vent and can rest easy knowing that your family is safe from any potential associated risks..

How to properly care for your LG dryer 

When you invest in an LG dryer, you want to make sure it lasts as long as possible. With proper care and maintenance, your LG dryer can provide years of reliable use. To get the most out of your LG dryer, here are some tips for proper care:

1. Clean the filter regularly

The lint filter should be cleaned after every load of laundry. This will help to prevent clogs from forming in your dryer and also improve air circulation. Be sure to remove any lint build-up that could cause a fire hazard.

2. Check the vent hose

Make sure to check the vent hose periodically for any debris or blockages that may be preventing your dryer from running efficiently. Replace the vent hose if it is cracked or damaged in any way.

3. Don’t overload

Overloading your dryer can cause it to overheat and reduce its efficiency. Make sure not to overload it with too many clothes at once, as this could potentially damage the motor and other components of the dryer.

4. Keep it level

Keeping your LG dryer level will ensure that it runs smoothly and evenly throughout each cycle, reducing wear and tear on its components. Be sure to keep it level during installation and regularly check for any signs of leaning or shifting over time.

5. Schedule annual maintenance

Having an annual service call from a certified technician is a great way to keep your LG dryer running its best throughout its lifetime. It’s important to have a professional check for proper airflow, inspect wiring, and make any necessary repairs before they become major issues later on.

By following these tips for proper care, you can keep your LG dryer running optimally year after year. Taking care of your appliance now will help you save money on costly repairs down the line while ensuring you get maximum performance out of your dryer in the long run.


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