The Heater Assembly is an OEM replacement part for LG dishwashers. Located internally behind the tub wall, it works to boost incoming water temperatures for optimal sanitization during hot rinse cycles.  Symptoms of a bad heater assembly include: Inadequate heating resulting in lukewarm final rinses   Fault codes or cycle interruptions during prolonged heating  Diminished drying performance from lack of hot air Noticeable decline in overall cleaning from colder wash water Causes related to mineral deposits clogging component coils over many years of use. Damage may also be caused by harsh chemicals left inside during wash cycles. Compatible models include some Kenmore and Sears dishwashers.This part fixes the following symptomsNot drying dishes properlylights flashing or blinkingPart Number 5301DD1001G (AP5272210) replaces 1582252, 5301DD1001A, 5301DD1001L, 6323DD3001A, PS3527787.