DLEX7880WE (00) LG Dryer - Instructions

The first thing I did was locate a copy of the Service Manual (not the User / Owner Manual). After looking at that and looking online I learned that there is no sensor for the Flow Sense feature itself. The Flow Sense doesn't detect a blockage. It detects excessive heat and the manufacturer has simply concluded that too much heat is most likely caused by a blocked duct and then it activates the Flow Sense safety feature: cutting off the heat source. Since I knew it was a heat problem I figured I'd get inside and check the two thermostats and the igniter. Igniter was fine, one thermostat was fine, the other one - the High Limit Thermostat - was giving inconsistent readings. I replaced it. Here's how: First I took the dryer apart. This is a little time consuming. There are a lot of parts that need to come out. I recommend that you put the screws in small baggies with a note as to where you took them out of so that you know where they go when you put it back together. You need to remove part of the back, the top and the front. I removed the electrical box because that is what is shown in the manual but I'm not convinced that I needed to. See if you can get the rest of the dryer apart without removing it but if you have to remove it it's not that big of a deal. It's a little tricky to detach the wire harnesses is all. And extra steps, of course. I did not remove the drum. Instead I just reached inside with the front off and pulled the wires off the thermostats to test them for resistance with a multimeter. It was kind of a pain and a little awkward but I did not want to mess with the drum tensioner. Once I figured out that the High Limit Thermostat was the likely culprit I removed it - which required a very short Phillips head screw driver and some patience since I could not actually see one of the screws. But all good. Just remember which wire goes on which terminal. Make a note for yourself: gray back / red front - something like that. Then I ordered the part and installed the new one and rebuilt the dryer in reverse from what I did.

Now, here's the thing: I actually did two things: aside from changing the thermostat I also thoroughly cleaned out the dryer. Somehow a lot of lint built up in there - no idea how since it all appeared to leave the dryer through the vent. but there must be some small gap somewhere. I cleaned everything including the flame detector. When I put it all back together it worked but I'm not 100% sure that the thermostat was bad. It's at least possible that all the lint and dirt was messing with the way the thermostats behaved. So what I would recommend, if you have this problem, is to clean it out first and then put it back together enough to run it and see of the heat comes on. It will take maybe 30-60 seconds for the heat to come on while the igniter lights. If not, go ahead and replace whichever thermostats or other parts you think are broken.

Called Parts Select and assisted me in proper parts needed. Drier works as new.

Took out drum. Found all parts easy to locate. Found defective part and replaced with new one.

Thank you Parts Select for your assistance.

I'm not for reading instructions. So I just dove right in and took the dryer apart to get down to the motor. I gave the dryer a thorough cleaning and replaced the 3 parts I ordered from the online recommendation. Wish I would have ordered 2 sensors and the 2 thermostats that are near the burner. Just so replace beings I was in there. Replacing the parts was easy, found them just by looking for matches to the new parts. Reassembled the dryer, dont think I put a single screw back where I got it lol. And still haven't put the top lid back on due to difficulty. Not sure if I even needed any parts, found a nest in my outside vent completely plugging it. But after a good cleaning and replacing the parts the dryer dries the best it has since we've owned it. The dryer came with our house which we bought 3 years ago and it was 2 years old when we purchased the house, so it is now 5 years old.

Initially replaced igniter. Didn't think it was bad though. Read other suggestions on another website. None were the correct diagnosis for my situation. And when I figured it out they did not offer correct part. The dryer thermistor temp sensor (probe sensor) is what I replaced. Found it on Parts Select. I did replace other parts also. But that's the one that ultimately was the issue.
Was not hard at all if one is even a little handy.

Pull off the top and front of the dryer and reached in and replaced the part it was easy. Had to clean all the dryer out real good with from the lint

With a thin flat screwdriver I was able to pry out the old door switch, I replaced it with the new door switch, pushed back in dryer and so far is working since I installed a month ago.

Followed the instruction on video.was great after three parts now is OK .we have heat.still cheaper than having it service.

Called LG on the phone and they gave the button presses for diagnostics, which then gave the HST code, saying the Humidity sensor was bad.
The part was described as the Humidity sensor module. Actually it's just the wire leads for the sensor which must be electronic and only accessible by disassembling the dryer. There were descriptions about cleaning the wires, perhaps because some people use dryer sheets which cause a buildup on the wires and prevent them from doing their job. I use wool balls and have no buildup on my wires and replacing them did not fix the sensor, because the module accessible inside the dryer is not the moisture sensor, but only the wire leads.

watched the video on line then did the repair, very easy to replace

Removed the old vent trap 3 screws total and replaced the new very quick and easy.

Removed six screws holding filter support in place. Replaced cover (keep track of the small spring on the left stub shaft). Reinstall cover and filter support sections. NOTE: the cover does not come with a new spring. You have e to reuse the old spring.

I watched a YouTube video with how to take the dryer apart and remove the sensors. I followed the what the instructions were removing the top of the dryer and then the front panel. Once that was removed it was a matter of removing 7 more screws and the lint collector piece came off. Popped the sensor pieces out. Cleaned the inside of the dryer and reinstalled a total of 5 parts and dryer is working fine and the clothes are drying in the allotted time it use to take.

Unscrewed the sensor cover, which on this model also holds the lint filter in plas. Then pulled the old sensors from their plug-ins. The new sensors easily slipped into the holder, and then replugged to the wires. The whole assembly screwed back into place. One note of caution: the flap where the filter slides in goes inside the cover, it's default is not upright, and be careful to not allow the inside spring for the cover to come off, or you might chase it!

To install the repair part took about 5 minutes. It took a couple hours to take apart of put back together. Unfortunately the part I replaced was not the problem. I still have no heat. My own fault for not testing the parts before ordering. It seems there is no ignition of the gas for the hot air flow. I would be grateful for any suggestions. The video was FABULOUS...really step by step, screw by screw. Thanks for that. Barb Swenson

I did as I was told (by my wife). Bought the machine from Home Depot - no side vent kit - had them complete the installation today when the kit came.