Fisher & Paykel Dishwasher F1 — What It Means & How to Fix It
F1 on a DishDrawer is the flood-switch code — the machine has detected water where it shouldn't be, and it will keep beeping until it's dealt with.
What this code means
F1 means the flood switch in the base of the DishDrawer has been activated — water reached the safety switch that protects the machine's electrics. Fisher & Paykel's manual moves straight from F1 to turning off the water and power supplies and calling an Authorised Service Centre, so treat it as a water-leak warning rather than a quick reset code.
Documented in the DS605/DD605 DishDrawer user guide, where F1 is listed as 'Flood switch has been activated' with only the water-and-power-off, contact-service instruction. The same F-code family appears across DishDrawer generations, and on double-drawer models the code refers to the beeping drawer.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Water leaking past a drawer seal or hose into the base | Very common | No — technician job |
| Splash or over-foaming during a wash tripping the switch | Common | Yes — dry off, reset |
| A blocked drain pushing water back into the base | Common | Partly — clear drain first |
| Faulty flood switch or its wiring | Less common | No — technician job |
What you can try yourself
- Unplug the DishDrawer (or switch off its breaker) and turn off the water supply before touching anything.
- Open the drawer and dry up any standing water, checking the sides and base for puddles, then let it air dry.
- Check the drawer lid seal and the hoses you can reach for visible leaks or damage.
- Restore power and water, then run a short rinse-only cycle — if F1 returns, stop and book a service call.
- If the machine was foaming or splashing, clean up and use the correct detergent dose next time.
Seeing the symptom rather than the code? Dishwasher leak alarm: checks that apply across brands.
When to call a technician
- F1 returns as soon as the drawer fills again.
- You can see standing water under the machine or pooling in the base.
- The machine has ever leaked onto the floor — treat this as urgent.
Typical professional repair cost: A service call for a DishDrawer flood-switch fault typically runs $150–$300; a leaking seal adds parts on top.
Frequently asked questions
Can I clear F1 on my DishDrawer myself?
You can reset it after drying out the drawer and checking for leaks: unplug, dry, then run a short cycle. If F1 comes straight back or you find a visible leak, stop and call a technician — this is the flood-safety code.
What is the flood switch on a DishDrawer?
A small safety switch in the base of the DishDrawer that detects water pooling where it shouldn't be. When it trips, the machine beeps continuously with F1 until the water is removed and the fault is cleared.
F1 appeared after a wash with lots of foam — is that normal?
Excess foam can trigger the flood switch on some models. Clean up, use the correct dishwasher detergent dose, and run a rinse cycle — but if F1 keeps returning, book service.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Fisher & Paykel codes
- Fisher & Paykel Dishwasher F3 F3 on a DishDrawer flags a temperature-sensor fault — and a very hot incoming water supply is the one cause you can check and fix yourself.
- Fisher & Paykel Dishwasher F4 F4 on a DishDrawer points to the heating side — the water isn't reaching temperature. Beyond one reset, the element or sensor needs a technician.
- Fisher & Paykel Dishwasher U1 U1 is the DishDrawer fill fault — not enough water arrived in the allowed time. Most times it's the tap, a kinked hose, or a spray arm you can fix yourself.
- Fisher & Paykel Dishwasher U2 U2 is the DishDrawer 'something's sticking up' alert — an item is taller than the drawer allows. Remove it and press the button to continue.
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