Whirlpool Washer F20 Error Code — What It Means
F20, also shown as FH on some models, is a no fill or low fill error on Whirlpool front load washers. The control does not sense water entering within the expected time and stops the cycle.
Common Causes
- Supply valves closed Closed or partly open hot and cold valves keep water from reaching the washer.
- Kinked or frozen hoses A pinched or frozen fill hose blocks the water supply.
- Clogged inlet screens Sediment and mineral buildup on the valve screens restrict incoming water.
- Defective water inlet valve A valve that will not open electrically leaves the tub empty.
- Pressure switch fault A bad pressure switch or hose can falsely report no water.
Step-by-Step Fix
- Check that both supply valves are fully open and both fill hoses are connected.
- Inspect the hoses for kinks, and in cold weather confirm none are frozen.
- Turn off the water, remove the hoses, and clean the inlet screens with a soft brush.
- Run water through each hose at a sink and replace any that flow poorly.
- Reconnect, restore power, and start a cycle to watch for proper fill.
- Test the water inlet valve coils for continuity if fill is still weak.
- Replace the water inlet valve if it tests bad or stays shut under power.
Parts Often Needed
| Part | Notes |
|---|---|
| Whirlpool washer water inlet valve | Amazon | Match the part number to your model tag before ordering. |
| Washer fill hoses | Amazon | Replace hoses that are kinked, cracked, or slow to flow. |
| Inlet screen filter | Amazon | Use a fresh screen if cleaning does not restore full flow on supported models. |
When to Call a Pro
If supply, hoses, and screens check out and a new inlet valve does not clear F20, the pressure switch or control board may be at fault. Call a technician if you are not set up to test electrical parts.