What's Happening

Exhaust temperature sensor giving abnormal readings.

How to Fix It

Test with multimeter and replace if out of range.

Frequently Asked Questions
What does F3E3 mean on a KitchenAid dryer?
F3E3 means the exhaust thermistor is reading abnormally.
Where is the exhaust thermistor?
Near the exhaust duct inside the dryer, accessible by removing a panel.
Is it the same as E1?
No. E1 is the main drum thermistor. F3E3 is specifically the exhaust sensor.