Whirlpool · Dryer Serious

F4E4 — Supply Voltage Error

The control sees the incoming 240V line voltage is out of the acceptable range (too high or too low). Most often a house-wiring or breaker problem, not the dryer.

Keep using it?
Limited use only
DIY difficulty
Easy
Verified against
atoz1.com ↗

How to fix it

  1. Reset both halves of the 30A dryer breaker.
  2. Unplug the dryer and check outlet voltage with a multimeter — ~240V hot-to-hot, ~120V each hot to neutral.
  3. If outlet voltage is wrong, call a licensed electrician.
  4. If outlet voltage is correct, inspect the dryer terminal block screws and power cord for burnt or loose lugs.
  5. Power-cycle the dryer at the breaker for 5 minutes and run a Timed Dry.

Why it happens

Typical signs: F4E4 on display · No heat or intermittent heat · Dryer trips off mid-cycle · Other 240V appliances in house also acting up

  • Tripped or weak breaker Half the 30A double breaker has tripped or is failing.
  • Loose terminal block / cord lug Connection at the dryer terminal block or outlet has loosened.
  • Utility brownout / overvoltage Incoming line voltage genuinely out of spec at the meter.

More Whirlpool dryer codes

AF AF — Airflow Restriction E1 E1 — Exhaust Thermistor Open/Shorted E2 E2 — Outlet (Exhaust) Thermistor Shorted Err Err — Door Not Fully Closed F01 F01 — Main electronic control board failure F02 F02 — User Interface / Keypad Failure

All Whirlpool codes → All dryer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: atoz1.com.