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Re: It doesn't heat up and dry clothes.
The heating element have got old and brittle over time and finally gave up the ghost. But it is not always the element. It could be one of the safety Hi-limits have blown. All parts of the dryer will have continuity if its working properly. Test for continuity by using a meter set on Ohms,or use a poor man's meter. You can make your own poor man's meter by using an ordinary flashlight . Break the circuit in the flashlight and add a couple of wires to it so that you can make the light come on in the flashlight, that's right hot wire that flashlight. When the bulb lights up you have a circuit! You now have a poor man's meter. The next step is to check each little gizmo on the dryer that the wires attach to. All the limits attached to the side of the heat element, the door switch (when door is closed) etc.should have continuity (closed circuit)(the light should come on in the poor man's meter) If you come across an thing near the blower housing with 2 wires attached to it, that is a thermal limit, a safety or a control thermostat (So as not to get a false circuit you need to remove one of the wires to each thing you check) Look for lint buildup or blocked vent going out the house. If everything is good and you have paid the electric bill, then the timer could be bad.
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lg's have a dry sensor that senses the wetness of the load they are not that reliable.. and will shut down the machine does it work on manual timer? meaning set it on high for 30 minutes.. it will probably run the 30 minutes... I have had this issue with my lg and so I just use the manual settings cheaper than having a 300$ service call. Its a problem with the dry sensor on the lining of the drum...
This is very rare on a gas dryer but I have seen it. If you have already replaced all that other stuff I would say it has to be inside the timer. On one I worked on once I could remove that orange wire and the dryer would function ok so I ordered a new timer, they sent me a bad timer. Same problem. I finally got a working timer after going through a bunch of mess. That fixed it. So if all the other components are working it very well could be the timer.
This caused by one of two possible things. Either you have poor air flow, or a clogged vent preventing air from flowing freely and therefor making the dryer short cycle, which in turn will take you two or three times to dry yor clothes, or the heating element has gone bad, burnt in half and is making contact with the case to provide it just enough power to barely heat. The second thing is a very rare occurance. I would turn the dryer on, find out where the air vents out to, and with the dryer running, go to where it vents and check to see if there is a strong flow of air. 9 times out of 10 that is going to be your problem. Another way to check air flow is to just pull the vent off the back and let the dryer run and see if your clothes dry faster. If you do it that way and they still take a long time to dry, then you'll probably need to replace the heating element
II might need the actual model number. However, you can go to page 9 on this manual and check if the flashing options can fix the problem. I am assuming you have already tried to turn the power off and back on.
The ohter thing to try is the reset sequence. Within 6-7 secs press High Temp/ Heat Dry/ High Temp/ Heat Dry/ High Temp/ Heat Dry. All lights should light up, press Start button to exit.
2 possible reasons, either the towels have not been spun at a high enough speed and are too wet, or the dryer is not getting hot enough because it is not switched to a high enough heat setting or there is a partial element or thermostat or humidity sensor failure.
You should spin your towels as fast as you can, 1000 MINIMUM but 1400 or more is better. Did it ever work? Is it a new drier? Is it getting hot? 45 mins is a short time anyway to dry a full load of towels.
The operating thermostat controls the timer and should open and close the circuit as it senses heat during the dry cycle. If it fails to open it will just keep the timer 'energized all the time and run straight through and go off. Change the 'operating thermostat'
Maybe I can give you a few ideas on some things to check. As a general rule of thumb, to get maximum support here at Fixya, you should always include the brand and model of your appliance.. That helps us to tailor responses to your specific problem.. Anyway, regardless of dryer model, they all pretty much operate in the same basic manner and that is.. there is a heat source ( electric dryers use an heating element similar to an electric stove) A gas dryer is essentially the same but uses gas with an igniter to create a flame on a burner..) Outcome is the same.. Heat
Once heat is established, you need to move the clothes and the air thru the dryer compartment to optimize the drying efficiency. Both gas and electric models use a blower to move that heated air thru the compartment and out thru your vent system. If anything restricts air movement ( lint, blockage or any restriction in the blower or filter) your drying efficiency drops way down and dry times go way up. So. now you have the basics on how a drywer works.. Having said that... you need to check the basics first.. Make certain that you dryer exhaust system has NO restrictions to air flow.. you may have to detach vent line and check it for lint or anything in there.. If you have an electric dryer.. you can turn it on for a minute or two with the vent linbe disconnected to see if you are getting robust air movement.. If you aren't , then your problem is internal to the dryer, If you are.. you may have an exhaust duct restriction. Although not recommended, you can do the same for a gas dryer in a well ventilated area just to check the flow intensity.. But.. only for a short time since the gas burn byproduct is unhealthy for you to breath. I forgot to mention that the drum inside the dryuer should be moving the clothes during all this.. that acellerates the dry cycle too. Lastly, you need to make sure you are getting heat.. You can start a dry cycle with the dryer empty to see how warm it gets.. It should get fairly warm. Not sure I helped you but you now have a few things you can try. If you continue to have problems with this, feel free to contact me via this forum but please include the model number of your LG appliance..
ck vent system to outside ck for crimped vent hose on back or plugged vent to outside ..if burner ignites but fails or is slow to reignite suspect the coils on burner (the 2 black things with wires attached)