Whirlpool · Washer Moderate

F20 — / FH — No Water Detected

F20 (or FH) means the washer did not detect water entering during the fill step — it never reached the expected level.

Keep using it?
Yes, with caution
DIY difficulty
Easy
Verified against
producthelp.whirlpool.com ↗

How to fix it

  1. Confirm both supply faucets are fully open with good pressure.
  2. Clean the inlet mesh screens where the hoses connect.
  3. Inspect the pressure sensor hose for clogs.
  4. Test and replace the inlet valve if it will not open.

Why it happens

Typical signs: Washer will not fill · Cycle stalls at the start · F20 or FH on the display

  • Supply valves closed The hot/cold faucets behind the washer are not fully open.
  • Clogged inlet screens Mesh filters at the valve are clogged with sediment.
  • Faulty inlet valve A valve that will not open.
  • Pressure sensor/hose fault A clogged pressure hose makes the board think no water arrived.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Whirlpool Washer Water Inlet Valve Common replacement
    Amazon →

Related repair guides

Washer Not Filling With Water — Causes and Fixes →

More Whirlpool washer codes

dET dET — Detergent Cartridge Not Detected F0E2 F0E2 — Over Suds Detected F0E3 F0E3 — Load Too Heavy / Basket Blocked F0E5 F0E5 — Off-Balance Load F0E7 F0E7 — Clothing Detected During Clean Washer Cycle F1E1 F1E1 — Main Control Board (CCU) Fault

All Whirlpool codes → All washer codes →

Frequently asked questions

What does the F20 code mean on a Whirlpool washer?

F20 (or FH) means the washer did not detect water entering during the fill step — it never reached the expected level.

What causes the F20 code on a Whirlpool washer?

Supply valves closed: The hot/cold faucets behind the washer are not fully open. Clogged inlet screens: Mesh filters at the valve are clogged with sediment. Faulty inlet valve: A valve that will not open.

Is it safe to keep using a Whirlpool washer with a F20 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix F20 on a Whirlpool washer?

Confirm both supply faucets are fully open with good pressure. Clean the inlet mesh screens where the hoses connect. Inspect the pressure sensor hose for clogs.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: producthelp.whirlpool.com.