Whirlpool Dryer F4E1 Error — Heater & Relay Fix

What it means

Whirlpool dryer F4E1 is the heater fault.
Whirlpool's exact wording: 'There may be a problem with the Heater or Heater Relays.'
The control couldn't confirm the heater was responding correctly to its switching commands.
The published owner step is a 1-minute power cycle.

Affected Models

Whirlpool WED4815 / WED4850 / WED5000 series electric dryers
Whirlpool WED7120 / WED8120 / WED9620 Cabrio series
Whirlpool WGD4815 / WGD5000 / WGD7120 series gas dryers
Whirlpool Compact Heat Pump dryers (WHD862, WHD560)
Same F+E codes appear on Maytag, KitchenAid, and Amana dryers (shared platform)

Common Causes

Brief electrical glitch the control read as a heater fault
Heater relay on the control board momentarily stuck
Failed heating element (most common after first reset doesn't clear it)
Failed high-limit thermostat (safety device that cuts heater on overheat)
Wiring connection to the heater loose or corroded

How to Fix It

Power cycle for 1 minute.

Whirlpool's exact step: 'Power down the unit by turning off the circuit breaker(s) for one minute. Power up by turning the circuit breaker(s) back on.'
Wait the full minute — shorter resets sometimes don't clear the control fully.
Start a Time Dry test cycle.

Whirlpool: 'Start a time dry cycle.'
Choose Time Dry with heat on a medium temperature setting.
After about 2 minutes, briefly open the door and feel the air — it should be warm.
Cold air means the heater isn't firing.
Confirm the error doesn't reappear.

Whirlpool: 'Monitor the dryer for one minute to confirm the error doesn't reappear.'
If F4E1 returns during the test cycle, the reset didn't fix it — schedule service.
Schedule Whirlpool service if F4E1 persists.

Whirlpool's heater, heater relays, and high-limit thermostat all need a technician with proper diagnostic tools and replacement parts.
Both the heater element and the high-limit thermostat are inexpensive parts — labour is the bigger portion of the service call.
An authorized Whirlpool technician will identify which has failed during the visit.

When to Call a Professional

If a 1-minute power cycle doesn't clear F4E1, the heater circuit needs service.
This is not an owner repair on modern Whirlpool dryers — the heater element, relays, and high-limit thermostat all require disassembly and electrical testing.

Frequently Asked Questions

Why does the dryer still spin if the heater is broken?

Whirlpool's dryer motor and the heater are independent circuits — the motor turns the drum regardless of whether the heater is firing.
If F4E1 appears mid-cycle, the drum will keep spinning and the cycle keeps counting down, but no actual drying happens.
That's why you can have a 'running' dryer with cold air coming out — the symptom that often goes with F4E1.