# How to Fix Whirlpool Error F20 (Water Inlet Issue)
The F20 error code is one of the most common issues on modern Whirlpool washing machines, indicating that the washer cannot detect the required amount of water entering the drum within the allotted cycle time.
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## What the F20 Error Means
The F20 error signals a **Water Inlet Issue**. The machine’s control board monitors the flow of water using a pressure switch or flow meter. If the machine attempts to fill for several minutes (typically 4 to 6 minutes) and the flow sensor does not register the proper water level, the cycle stops, and the F20 error is displayed.
**The likely culprits are:**
1. **Clogged Screens/Hoses** (Easy Fix)
2. **Low House Water Pressure** (External Issue)
3. **Faulty Water Inlet Valve** (Requires Replacement)
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## Step-by-Step Fix: Diagnosing and Repairing the F20 Error
Before attempting any repairs, ensure you have **unplugged the machine** from the power outlet and **turned off both the hot and cold water supply valves** at the wall.
### Phase 1: External Checks (The Easy Fixes)
These checks resolve the majority of F20 errors and do not require tools.
#### Step 1: Confirm Water Supply Taps Are Open
Verify that the hot and cold water supply taps behind the washer are fully turned on. If they were recently bumped or partially closed, the pressure won’t be sufficient for the machine to fill properly.
#### Step 2: Inspect and Clean Water Inlet Hoses
Kinked hoses drastically reduce water flow.
1. Pull the washer away from the wall and inspect both the hot and cold hoses running from the wall to the back of the washer. Straighten any kinks or bends.
2. If straightening doesn’t help, unscrew the hoses from the back of the washer.
3. Check the end of the hose for **sediment buildup or debris**. Clear any visible blockages.
#### Step 3: Check the Valve Screens (Crucial Step)
Where the hoses connect to the machine, there are usually small, mesh filter screens built into the inlet ports of the washer (part of the Water Inlet Valve).
1. Use needle-nose pliers or tweezers to carefully remove these screens.
2. Rinse them thoroughly under running water to remove any rust, calcium, or sediment.
3. Reinsert the clean screens and reconnect the hoses tightly.
#### Step 4: Verify House Water Pressure
If water flow seems weak from a nearby sink or faucet, your entire house may be experiencing low water pressure (perhaps due to utility work or a well pump issue). If house pressure is adequate, move on to internal diagnosis.
### Phase 2: Internal Repair (The Water Inlet Valve)
If external checks fail, the **Water Inlet Valve** itself is likely defective. This component is an electrical solenoid that opens when the machine calls for water. If the solenoid fails, the valve won’t open, or it will only partially open, triggering the F20 error.
#### Step 5: Locate and Access the Water Inlet Valve
1. Depending on your model, you will need to remove the top panel of the washing machine (usually two or three screws at the rear edge).
2. The Water Inlet Valve is typically located at the back of the machine where the hoses connect. It will have wiring harnesses attached to it.
#### Step 6: Testing the Valve (Optional, but recommended)
If you have a multimeter, you can test the solenoid coils for continuity.
1. Disconnect the electrical connectors from the valve solenoids.
2. Set your multimeter to the Rx1 setting (resistance/ohms).
3. Touch the probes to the terminals of the solenoid coils.
4. **Normal Reading:** The solenoids should read between **800 and 1,200 ohms**.
5. **Faulty Reading:** If the reading is zero (shorted) or infinity (open circuit), the valve is electrically defective and must be replaced.
#### Step 7: Replacing the Water Inlet Valve
1. Take a picture of the wiring and hose orientation before disconnecting anything.
2. Disconnect all wiring harnesses and any small internal plastic tubes attached to the valve.
3. The valve is usually secured to the washer housing by one or two screws, or simply held in place by a retaining clip.
4. Install the new valve, ensuring the rubber seal is seated correctly.
5. Reconnect all wiring and internal hoses.
6. Reassemble the machine, turn on the water supply, and plug the unit back in. Run a short rinse cycle to test the water flow.
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Check the price for a replacement Water Inlet Valve here: https://www.amazon.com/s?k=Whirlpool+Water Inlet Valve&tag=trivian-20