Model Number: LER7648KQ2
Brand: Whirlpool
Age: More than 10 years
Initial indication was a burning smell in the dryer, and the vent into the drum is heat discolored. Dryer door (internal) is too hot to touch. External vent removed for troubleshooting. Dryer has been cleaned. Excessive heat exists regardless of TEMPERATURE SELECTOR.
Replaced the hi-limit thermostat with no change.
Using an infrared (surface temp) sensor:
- heater coils reach 700 deg
- measured 300 deg on vent to drum thru top hole of heater column
- measure at external vent attachment LOW DELICATE 140 deg on cycle, 120 deg off cycle
MEDIUM 144 deg on cycle, 124 deg off cycle
Heater element measured 10.2 ohms.
Timed Drying intermittent indications on LOW DELICATE:
- heating during cool down phase at the 4 o'clock position
- no heat during cool down phase at the 4 o'clock position
Dryer will cycle on and off; I can hear the operating thermostat functioning.