Fisher & Paykel · Dishwasher Moderate

F40 — Water Flow Error

F40 means a water-flow error — the dishwasher is not getting the expected fill.

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

How to fix it

  1. Confirm the supply tap is open and clean the inlet filter.
  2. If F40 persists with good supply, the inlet valve or flow meter may need service.

Why it happens

Typical signs: Not filling properly · F40 shown

  • Restricted fill Tap off or a blocked inlet filter.
  • Low water pressure Insufficient incoming pressure.
  • Flow-meter fault The flow sensor mis-reads.

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.

  • Fisher & Paykel Dishwasher Inlet Valve Common replacement
    Amazon →

More Fisher & Paykel dishwasher codes

F30 F30 — Flood Switch Activated F50 F50 — Electronics Error F90 F90 — Data / Electronics Error FA0 FA0 — Electronics / Power Supply Error FC0 FC0 — Motor Fault U1 DishDrawer U1 — No Water

All Fisher & Paykel codes → All dishwasher codes →

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: support.fisherpaykel.com.