F23
Whirlpool Washing Machine
Severity: ModerateWhat Does This Error Mean?
The F23 error means your Whirlpool washer has a heater control problem. The heating element or the thermistor that monitors it has a fault. Water may not be reaching the correct temperature.
Affected Models
- WFW5620HW
- WFW6620HW
- WFW9620HC
- Most Whirlpool Duet front-load washers
Common Causes
- Faulty heating element that has burned out or shorted
- Defective thermistor (NTC sensor) giving incorrect temperature readings
- Loose wiring connections between the heater and control board
- Control board not regulating heater power correctly
- Water temperature too cold for the sensor to read accurately
How to Fix It
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Unplug the washer and let it rest for 60 seconds.
A power reset can clear temporary heater circuit errors.
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Check that the hot water supply tap is fully open.
If cold water enters the machine, the sensor may flag a heating error.
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Run a short hot-wash cycle and check if the water warms up.
If the water stays cold throughout the cycle, the heater is likely faulty.
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If F23 returns immediately after reset, call a technician.
The heating element and thermistor need to be tested with a multimeter.
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Replace the faulty component once confirmed.
It's important to replace only the part that has actually failed.
When to Call a Professional
Heater and thermistor repairs involve electrical components inside the washer. Always unplug the washer before any inspection. Repair costs typically range from $130–$300 including parts and labor. Contact Whirlpool support or a qualified technician.
Frequently Asked Questions
Can I still wash clothes with the F23 error showing?
You may be able to run cold water cycles without the heater. But the F23 error may stop all cycles on some models. Get it diagnosed before regular use.
How do I test a Whirlpool washer heating element?
A technician uses a multimeter to test continuity across the heater terminals. A functional heater shows a reading of about 20–30 ohms. Open circuit (no reading) means the heater has burned out.
How much does it cost to replace a Whirlpool washer heater?
The heating element part costs $40–$100 depending on the model. With labor, total repair is $130–$300. If the thermistor is the culprit, it's a cheaper fix at $80–$180.