Whirlpool Dryer F4E3 error code
On current Whirlpool dryers, F4E3 points to the main heater circuit. On older models the same display alternates as F4/E3 and means restricted airflow — the same condition as the AF code.
Also shown as: F4E3, F4 E3, F30, AF
Last updated: October 6, 2026
What causes the F4E3 error?
- Heater circuit failure (heating element, relay, or thermal fuse) on current models
- Clogged lint screen or blocked house vent (older models showing F4/E3 as AF)
- Crushed or kinked vent duct behind the dryer
- Outside exhaust hood blocked with lint
- Loose heater wiring connection at the main control
How to fix Whirlpool F4E3 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Clear the code and check for heat
Press any key or press POWER to clear the display. Run a timed heated cycle: if the drum turns but there is no heat, treat it as a heater fault; if clothes stay damp with heat present, treat it as an airflow problem. - Clean the full vent path
Clean the lint screen, straighten the duct behind the dryer, and clear the outside vent hood. This is the fix in most F4E3/AF cases on older models and protects the heater on all models. - Power-reset the dryer
Unplug the dryer for 5 minutes, then plug it back in. Whirlpool's own troubleshooting for F4E3 is to cycle power; if the code returns, schedule service.
When to call a technician
- F4E3 returns after vent cleaning and a power reset
- The dryer has no heat at all
- You smell burning or the heater housing looks scorched
- The code alternates with other heater-related faults
Frequently asked questions
Is F4E3 the same as AF?
On many older models, yes — F4E3 is just the alternating F/E display format of the AF restricted-airflow warning. On newer models Whirlpool documents F4E3 as a main heater fault. Your model's tech sheet decides which applies.
How do I clear F4E3?
Touch any key to clear the display, or press POWER. Like AF, clearing the screen does not fix the underlying vent or heater problem — it will come back until the cause is fixed.
No heat plus F4E3 — what now?
That points to the heater circuit (element, thermal fuse, or relay). Clean the vent first, then have a technician test the heater loop.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.