The LG DLEX3250* Dryer has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your LG might be giving you.
The exhaust system is severely restricted.
Thermistor is malfunctioning.
Power cord connection is incorrect.
Lint filter is almost clogged or full.
Ductwork is too long, has too many turns, or significant blockage due to lint buildup or debris.
Water supply error.
Humidity sensor failure.
Electric dryer power cord is not connected correctly, or house power supply is incorrect.
The ductwork is about 90%-95% blocked.