## How to Fix Whirlpool Error F24 (Water Temperature Sensor)
If your Whirlpool washing machine (especially newer Duet or Cabrio models) suddenly stops mid-cycle and flashes the code **F24**, don’t panic. This is a common error that points directly to a fault within the machine’s heating and temperature monitoring system.
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### 1. Explanation: What Does Error F24 Mean?
The F24 error code signifies a problem with the **Water Temperature Sensor**, commonly known as the **Thermistor**.
**In plain English:** The washing machine’s main control board (CCU) is not receiving a correct or plausible temperature reading from the sensor that monitors the water inside the tub.
* **The Thermistor’s Job:** This small sensor is critical for regulating water temperature during wash and sanitize cycles. It measures the water temperature and reports back to the control board.
* **The Likely Culprit:** When F24 appears, the thermistor is usually either **faulty** (reading incorrectly) or has an **open circuit** (a wiring issue preventing it from sending any reading at all).
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### 2. Step-by-Step Fix: How to Diagnose and Replace the Thermistor
Before attempting any repair, **always unplug the washer from the wall outlet** to prevent electrocution.
#### Step 1: Initial Checks (Reset and Visual Inspection)
1. **Perform a Hard Reset:** Unplug the machine for 5 minutes, then plug it back in. Sometimes, temporary power fluctuations can trigger the error. If the error returns immediately, proceed.
2. **Inspect Wiring:** The thermistor is typically located near the heating element at the bottom of the tub. Open the lower access panel (usually accessed from the back or by tipping the machine forward) and look for loose, frayed, or chewed wires connecting to the thermistor.
#### Step 2: Access the Thermistor
The thermistor is usually attached directly to the heating element or positioned very close to it inside the outer wash tub.
* **Front-Load Models (Duet):** You will need to remove the front panel or the rear access panel (easier).
* **Top-Load Models (Cabrio/Others):** Access is usually gained by removing the rear panel.
#### Step 3: Test the Thermistor (Using a Multimeter)
The most definitive way to confirm the F24 error is due to a faulty thermistor is by testing its resistance (Ohms). A thermistor is a Negative Temperature Coefficient (NTC) device, meaning its resistance decreases as the temperature increases.
1. **Disconnect Wires:** Unplug the two wires leading to the thermistor.
2. **Set Multimeter:** Set your multimeter to read resistance (Ohms – look for the $Omega$ symbol).
3. **Take Reading:** Touch the multimeter probes to the two terminals of the thermistor.
4. **Compare to Expected Values:**
* If the water in the tub is **room temperature (about 70°F or 21°C)**, the reading should be **between 11,000 and 15,000 Ohms (11kΩ to 15kΩ)**.
* If your multimeter shows a reading of **0 Ohms** (shorted) or **”OL” / Infinity** (open circuit), the thermistor is defective and must be replaced.
#### Step 4: Replace the Thermistor
1. **Removal:** The thermistor is usually held in place by a retaining clip or a small screw. Remove the clip/screw and gently pull the thermistor straight out of its housing. **Note:** Water may leak out when you remove the sensor; keep a towel handy.
2. **Installation:** Insert the new thermistor, ensuring the rubber seal is seated correctly to prevent leaks. Secure it with the clip or screw.
3. **Reassembly and Test:** Reconnect the wiring, replace the access panel, and plug the machine back in. Run a short hot water cycle to confirm the F24 error is resolved.
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### 3. Call to Action
Check the price for a replacement Thermistor here: https://www.amazon.com/s?k=Whirlpool+Thermistor&tag=trivian-20