LG Dryer Code D80 Error Code

LG Dryer Code D80, D90 & D95

I was working on an LG dryer, and the flow sensor light came up every time flushing the LG dryer code D80 error.

But that’s not all…

….I left it unattended, and it went on flushing LG dryer code D90, and finally LG dryer code 95. That’s when it hits me that the flow sensor error has something to do with the airflow.

We’re not through yet.

“On normal dry,” the machine defaults to medium heat, putting up no heat, and on “timed dry,” the machine puts up lots of heating.

In short:

The dryer had a flow sensor error, and it doesn’t on some occasions. There are a few possible solutions: 

  • Cleaning the lint filter
  • Ensuring the outside dryer air event has strong airflow
  • Visible obstructions.

Bear with me because I will show you how to fix the flow sense error.

What Do D80, D90, & D95 Mean on LG Dyer?


The D80 means that your LG air dryer is 80% clogged in the wall ducts, exhaust, or outdoor vent hose.

The dryer’s air exhaust can’t push enough air out of the dryer.

With no airflow, the heat rises until it activates the high-limit thermostat. At this point, your clothes can catch fire in the dryer. If the LG dryer is not cleaned, the lint build-up restricts airflow.

Restricted airflow makes the dryer take a long time to dry clothes.

And If you don’t clean the Lg dryer early enough, it leads you to LG dryer D90 and LG dryer D95 which means the dryer is 90% and 95% clogged.

To begin with:

LG dryer has one thermostat, a high-limit thermostat, and a thermal fuse. The thermostat measures air temperature passing through the vent. It’s the air that’s used to dry clothes.

A dryer vent clogged with lint won’t circulate air in the dryer. The National Fire Protection Association (NFPA) states that dryers and washers cause 15 970 fires per year, with dryers making up 92%. Most dryer fires came from dryer vents or lint traps.

How Do You Fix a D80, D90, & D95 On an LG Dryer?

The flow sensor is a safety feature present on most LG dryers. It monitors the vent and ensures there are no clogs, preventing the Lg dryer from catching fires.

It also monitors the airflow from restrictions. Restricted airflow is hazardous. 

But one thing’s for sure, if your dryer’s flow sensor detects a lack of air, it will trigger a warning to tell you there’s an issue that needs your attention. Then you are likely to see D80, D90 & D95 on the flow sensor.

And get this:

If you detect a flow sensor error like D80, D90, and D95, turn off the dryer to avoid the risk of catching fire. Signs of a clogged Lg dryer include:

  • Long drying time. When a dryer is clogged, it takes too long to dry or completely stops drying during a normal cycle
  • Burning smell
  • Hot outside

But first a warning:

Before you carry out any repair, you’ll need to reset your Lg dryer to know if it is a false or true alarm. Due to electrical malfunction, sometimes you may have a false alarm. Here’s how to reset the Lg dryer:

  • Disconnect the Lg dryer from the electrical socket
  • Leave the dryer for ten minutes
  • Reconnect the Lg dryer’s plug to a wall socket

Sometimes all you need to do is to follow the steps above to clear the flow sensor error code if you have no airflow restrictions.

That will indicate you need a false alarm. If the LG dryer returns LG dryer code D80, you have serious issues that you need to sort out. You can check out our best dryer here if you are looking to buy a new one.

How Do I Fix The Flow Sensor Error On My LG Dryer

The troubleshooting process starts with cleaning the dryer’s vent located at the back of the machine, up to the cap or hood vent. Cleaning the vent will keep your home safe. But that’s there’s more:

  • Consume less energy. A dirty lint screen uses up to 30% more electricity, increasing your energy bill. You’ll have to do more circles to dry your clothes. 
  • Prolongs LG dryer’s lifespan.
  • Animals won’t nest in your residence.

Therefore it makes sense to clean your vent duct. First, you need to check the amount of air outside. You can do this easily:

  • Step 1: Disconnect the LG dryer from the socket wall
  • Step 2: Get a vacuum with a long hose attachment or leaf blower to suck at the lint from the dryer vent
  • Step 3: Get a dryer vent brush to remove hard to reach lint stuck down the vent
  • Step 4: Vacuum out the  dryer vent to remove the remaining lint

If you use the LG dryer vent every day, you’ll have to clean the event once a month routinely. If you use it a few times a week, they will clean it after every three months.

And if you are a person who rarely uses it, then make it after every six months. After doing everything stated above, follow the steps below to troubleshoot.

Step 1 Disconnect the dryer from the exhaust vent at the back of the dryer

Step 2  Add wet clothes to the dryer and launch the drying cycle

Step 3 Pay attention to the clothing’s drying frame. If they dry within the expected time, you have solved the issues. That tells you the exhaust system was the problem

Step 4 if the lead is wet, you have to check the thermal fuse or heating element

How to Test LG Dryer’s thermal fuse?

The thermal fuse is a safety mechanism inside an LG dryer that obstructs the flow of electricity in the vent from overheating. If the temperature is too high, the thermal fuse shuts off the dryer. 

If you have cleared the dryer vent, but the d80 error code is still there, you must check if the thermal fuse is working well. You can find the thermal fuse behind the dryer’s exhaust duct.

Hack tip 1:

Testing a dryer’s thermal use is similar to testing its thermostat. The thermal is a small quarter device about two inches long behind the exhaust duct. And it has two wires connected to it. 

To access the thermal fuse, remove the LG dryer’s back panel. Here’s how to do that:

Step 1 Disconnect the Lg dryer from the power socket. Ensure the appliance has no electric power

Step 2 The two wires connecting to the thermal fuses are connected using a metal slip connector. Pull the two wires from the connectors indirectly (not the wires directly). You can use a pair of needle-nosed pliers to do this.

Step 3; Set your multimeter to the RX1 settings. Take your multimeter probe and place it on each terminal. Test to see if there’s continuity. Your multimeter reading will be zero or infinite at room temperature to show that your thermal fuse is working well. If the test doesn’t produce these results, you have a faulty thermal fuse, and you need to replace it.

Hack tip 2:

I recommend testing the dryer’s fuse at room temperature to get an accurate reading. Remember that you can’t adjust a thermal fuse. If it’s faulty, you’ll have to replace it immediately.

If you have done everything okay, you’ll have to troubleshoot /reset the dryers again as we need after cleaning the vent. The process goes like this: disconnect the dryer, wait for minutes, and connect it again. If the function fails, we have to look at the heating element.

Testing the LG dryer’s heating element for continuity

An Lg dryer needs a heating element to heat air that can dry the clothes. If your dryer takes ages to dry, then a heating element is faulty, and you’ll see LG dryer codes D80, D90, and D95.

The solution here’s to test the part if it’s working correctly. Here are the most straightforward steps to follow and confirm that:

  • Unplug your Lg dryer from the electrical socket
  • Loosen the screws on the vent clamp to remove the vent from the dryer
  • Locate the heating element and check if for damage or burning
  • Set the multimeter to the RX1 and touch each probe to the heating element terminals. The ideal reading on the multimer will be between 20 and 50 ohms. Any reading outside this range means you need to replace the heating element.

If you are unsure about the parts, check the manufacturer’s guide. Here’s a copy that I have for an LG dryer.

Check the High limit thermostats and Cycling thermostats.

An Lg electric dryer has a high-limit thermostat that monitors the upper temperature by shutting off the heating element when it reaches the optimal heat.

Picture it this way:

The high-limit thermostat is a backup safety control for the cycling thermostat. If you experience an Lg dryer code D80 error, the first thing to test before placing the heating element is the cycling and high-limit thermostat.

The cycling thermostat regulates the temperature in both gas and electric dryers. You’ll find the cycling thermostat located at the blower.

The air temperature is between 120 and 160 degrees Fahrenheit during regular drying cycles. The cycling thermostat switches off the burner assembly or heating element when the temperature is optimum. Here’s how to test both of them:

  • Set your analog multimeter to read “zero.” Set it to the lower setting for ohms if you have a digital multimeter.
  • Isolate both the cycling thermostat and high-limit thermostat from the LG dryer
  • Test the cycling thermostat to ensure that there’s continuity. Since it has two terminals, touch the red probe to the outer terminal and the black probe to the inner terminals.
  • If the reading is “zero” with the outer terminals, you have electrical continuity.
  • Test the high-limit thermostat for continuity. Remove the thermostat from the dryer, or infinity will tell you that there’s electrical continuity.

Any reading out of this range means you have to buy either a new cycling thermostat or a high-limit thermostat. I hope from this article you have learned how to fix the LG Dryer Code D80 error. Let me know if you found any issues while fixing the LG Dryer Code D80 error. 

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