What to do if my Henny Penny 500 shows “E-4” “CPU TOO HOT”?
- JJennifer BushAug 18, 2025
If the display shows “E-4”, the control board is getting too hot. First, turn the switch to the off position, then turn it back on. Check the louvers on each side of the unit for obstructions and inspect the cooling fan, if your fryer has one.