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Re: blows cold air and produces little lint in the vent
To get a rear control LG dryer apart: Open door and remove two phillips head screws at the 5 and 7 o'clock positions. Use a putty knife to release the clips holding the top panel to the dryer front by pushing the clips in at the seam of the dryer top and front, a couple inches in from each side. Swing top back. Remove two phillips head screws at the top, allowing front panel to pull forward. Unplug drum light and door switch and drum sensor plugs, allowing front panel to be completely removed and set aside. Now, look at the burner area at the lower right. Behind the gas valve you will find a small (about dime sized) high limit thermostat on the left side of the burner cone. It has two wires attached and has a small pin in the center of it. (Only on gas models) Push the pin in. Now, if that get's you ignition again, CORRECT VENTING ! Get rid of flexible vent material. (use only rigid aluminum vent pipe and elbows) Clean out vent pipes and outside vent hood. Outside vent hood should be the kind with a four inch flap for the opening, not a two inch flap. Tripping of the high limit thermo is almost always caused by inadequate air flow.
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Sounds like an open heating element issue. If you have two sensors for internal temps, the chances of both going bad at same time are remote.
Locate the element wiring and disconnect from circuit and do a simple continuity test. Chances are that it is burnt out or open.
did you clean the vent line?THAT COULD MAKE IT RUN HOT THE AIR CAN'T BLOW OUTSIDE,BUT WITH THE DRYER HAVING HEAT WHEN IT STARTS AND THEN AFTER LIKE 10 MINUTES NO HEAT IT SOUNDS LIKE YOU HAVE BAD GAS COILS,WHEN THE COILS ARE STARTING TO FAIL THEY WILL WORK FOR LIKE THE FIRST 10 TO 20 MINUTES AND WHEN THEY HEAT UP NO GAS,WHEN THE COOL THEY WILL WORK AGAIN,I WOULD CHANGE THE COILS AND CLEAN OUT THE DRYER AND VENT LINE,THIS SHOULD BE DONE ONCE A YEAR SO YOU DON'T HAVE A FIRE AND YOUR CLOTHES WILL DRY ON TIME,EVERYONE THINKS SOMETHING IS WRONG WITH THE DRYER AND ALL THAT HAPPENS IS THE VENT LINE AND THE DUCT WHERE THE LINT FILTER SLIDES INTO FILLS WITH LINT AND THE AIR CAN'T BLOW AROUND GOOD ANYMORE,ALSO WITH A SHOP VAC VAC UP THE LINT WHERE THE BURNER AND MOTOR IS AND THEN SET THE VAC UP TO BLOW AND BLOW THE MOTOR AND GAS BURNER OUT,DO THIS AND YOU'LL HARDLY HAVE ANY PROBLEMS WITH THE DRYER
if you hear the flame light but it doesn't stay on for a long time most likely you have lint blocked up in the dryer or in the vent linepull out the lint screen filter and look down into the duct that the filter slides into,if that's blocked you can try to stick a brush down in there and pull out as much lint as you can and then get a shop vac and set it up to blow and try to blow the rest of the lint out,if this doesn't work you have to pull the front of the dryer off and clean out the duct,also vac and blow out the gas tube and the motor and vac up any lint that's in the cabinet,unplug the dryer,remove the top,then the control panel and then the front panel.put it back together and then go out side and make sure the duct is clear no cage or screen,go back inside,remove the vent line off of the back of dryer,if it's a long run to the outside stick a leaf blower into the vent line and blow it to the outside,put it back together and you should be fine.this should be done once a year with a gas dryer so you don't have any problems with parts or how it's running and most important you won't have a fire.if you need anymore help let me know.
check the vent line if clogged it will cause the sensors to trip off way too soon . that will not allow it too make any heat. check up inside the dryer as well if the vent is way clogged with lint the dryer will too. the vent should be cleaned twice a year
if it is still pluged in and running and you only get cold air check your vent hose it may be blocked by lint or you can put the vent off the back and see if you get hot air then if so the vent is cloged with lint if it is still not blowing hot air then you may have a thermostat open this takes a little more checking you have to take the back off the dryer to check the stats try the vent first white
Sounds like the vent has a lint build up inside of it. A moister sensor detects any lint build up and keeps the heat in check. The dryer will produce very little heat this was. Clean the entire venting tubing and it shall run better for you
check where your dryer vent goes through your outside wall they sometimes clog up with lint and cause the escaping heat to recirculate back to your dryer causing the sensor to read the dryer as too hot clear all lint from the outside vent so you can feel the air coming out very steadily and quickly If this works you are all set otherwise check your heating element
you could have a blockage of lint either in the dryers front bulk head (where the lint screen is) or you could have a blockage somewhere in the vent line. check those and if you have a blockage remove it and that should clear up the problem