Whirlpool Dishwasher 4-3 — What It Means & How to Fix It
Also shown as F4 E3, F4E3 on some models.
F4E3 is Whirlpool's heating error code for dishwashers: reset the control by cutting power for 30 seconds, and schedule service if the error comes back.
What this code means
Whirlpool describes the potential cause of F4E3 as a heating error. The dishwasher has noticed that heating is not behaving as commanded. As with the other heating code, F4E2, the published troubleshooting stops at a power cycle and then hands over to service.
On Whirlpool dryers F4E3 means restricted airflow — an unrelated fault. Make sure you are reading the dishwasher meaning, and check your model's manual if in doubt.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Heater circuit fault | Common | No — technician job |
| Temporary control error | Occasional | Yes — power reset |
| Faulty control output to the heater | Less common | No — technician job |
What you can try yourself
- Stop the cycle.
- Unplug the dishwasher for 30 seconds; for a hard-wired unit, turn the breaker off for the same time and then back on.
- Start a new cycle and see whether it finishes without the code.
- Leave the heater and its wiring alone — do not attempt electrical tests on a mains-powered element.
- Arrange service if F4E3 is displayed again.
When to call a technician
- F4E3 comes back after resetting.
- The tub interior is cold at the end of a heated cycle.
- The breaker trips, or you notice any smell of overheating.
Typical professional repair cost: Typical professional repair for a heating fault is $150–$300; more if the electronic control is involved.
Frequently asked questions
Is F4E3 serious on a Whirlpool dishwasher?
It means heating is not working as the control expects. Whirlpool treats it as a service item if a power reset does not clear it.
What is the difference between F4E2 and F4E3?
Whirlpool labels F4E2 as heating system and F4E3 as heating error. Both get the same first step — cycle power — and both go to service if they return.
Does F4E3 mean the same thing on a Whirlpool dryer?
No. Whirlpool uses AF or F4E3 on dryers for restricted airflow. The dishwasher code is about heating.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Whirlpool codes
- Whirlpool Dishwasher 1-1 The control board detected one of its own relays stuck on — a long power-off clears the false alarms, while a genuinely welded relay means board-level repair.
- Whirlpool Dishwasher 6-4 The overfill float switch — the machine's anti-flood backstop — is reading open, usually because the float is stuck or obstructed, occasionally because the inlet valve is dribbling water in when it should be shut.
- Whirlpool Dishwasher 1-2 F1E2 means the dishwasher's main control has logged a communication error — disconnect power for 30 seconds to reset it, and book service if the code returns.
- Whirlpool Dishwasher 2-1 F2E1 points to a stuck key or a console error on the control panel; cycling power for 30 seconds is the fix to try, and a repeat means the console needs professional attention.
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