Fisher & Paykel DS603-88412 dishwasher dish drawer Parts

If your Fisher & Paykel DS603-88412 DishDrawer is not draining, we focus first on the most common causes: a blocked drain filter or spray arm, a kinked or clogged drain hose, or an installation drain height that is too high. Use the steps in the DS603-88412 owner's manual to clean the drain path and confirm normal draining.

• Cancel the cycle and restart with a Rinse program to see if it drains at the end.
• Remove the basket and clean the drain filter; rinse it under running water and reinstall it flush.
• Lift and rinse the spray arm; shake out any debris and reinstall it on the impeller.
• Check the sink drain or garbage disposal connection (a blocked household drain can mimic a dishwasher drain failure).
• Inspect the drain hose routing for kinks, crushing, or a sag that traps water.

The DS603-88412 has a maximum drain height of 37 1/2 in. (950 mm). If the hose is routed higher than that, the drawer can struggle to pump water out.

If you need more reach, use the approved extension kit rather than improvising; the installation guide lists the Drain Hose Extension Kit as P/N 525798 and notes not to extend beyond the specified limit.

If the filter and hose are clear and the unit still will not drain (or drains very slowly), the drain hose itself may be restricted internally or damaged.

• Replace the hose if it is split, soft, or permanently kinked
• Replace the hose if you find heavy buildup you cannot flush out
• Check for repeated fault beeps and follow the fault-code steps in the manual

A common replacement part for this model is the dishwasher drain hose 527137.

A DishDrawer that cannot drain will often leave dirty water in the tub, cause poor cleaning, and can trigger fault beeps. Keeping the drain filter and spray arm clean (about monthly in normal use) prevents most drain complaints.

Last updated: January 2026

On the Fisher & Paykel DS603-88412 DishDrawer, a flood switch fault is cleared by stopping the beeping with POWER, then turning power off and back on. If the fault returns, treat it as an active leak or water in the base and correct the cause before running cycles (see the DS603-88412 owner's manual).

1. Press POWER once to silence the continuous beeping and attempt to clear the fault code.
2. If the code stays on, turn power off at the power supply (switch or breaker) for a few minutes.
3. Turn power back on at the power supply, then press POWER to restart.
4. If the flood switch fault returns, turn water and power off and address the leak source before using the dishwasher.

A flood switch usually trips because water is collecting where it should not. Check these common causes:

• Water pooled in the base from an overflow or leak
• Loose or leaking drain connection, especially after moving the unit
• Drain hose routing issues (kinks, low loops, or poor support)
• Leaks at seals or O-rings around the wash system
• Over-sudsing from the wrong detergent or too much detergent

When the flood switch activates, the DS603-88412 is protecting your kitchen from water damage by stopping normal operation. Clearing the code without fixing the leak usually means the fault will return mid-cycle.

Last updated: January 2026

Yes. On the Fisher & Paykel DS603-88412 DishDrawer, each drawer has its own control panel and runs independently, so you can run different wash programs in both drawers at the same time (as long as each drawer is loaded and started separately). Refer to the DS603-88412 owner's manual for operating details.

• Load each drawer and remove heavy food scraps.
• Add detergent and (if used) rinse aid for each drawer.
• Select a wash program on the top drawer control panel.
• Select a wash program on the bottom drawer control panel.
• Press Start/Pause for each drawer, then close each drawer fully.

When both drawers run, they still behave like two separate dishwashers. Timing and display information can differ between drawers.

• Use the drawer that matches the load: cups and glasses in one, plates and pots in the other.
• Avoid opening drawers mid-cycle; it can affect wash time and results.
• If a drawer shows a fault, follow the fault code guidance in the manual before restarting.

Running both drawers independently lets you wash small loads efficiently, separate delicate items from heavily soiled dishes, and keep one drawer available for quick rinses while the other runs a full wash.

Last updated: January 2026

Fisher & Paykel DishDrawer dishwashers like model DS603-88412 typically last 10 to 15 years with normal household use. Lifespan depends most on water quality, cleaning habits, and how often the drawers run, plus whether leaks and drain issues are corrected quickly.

Most DishDrawer units reach the 10 to 15 year range when they are installed correctly and maintained regularly.

• Usage frequency: multiple loads per day shortens life compared to a few loads per week
• Hard water: increases scale buildup on wash components and seals
• Drain health: clogs and standing water strain the pump and motor
• Leaks: slow leaks can damage wiring and electronic controls over time
• Detergent and rinse aid settings: incorrect settings can leave residue and increase wear

Use the maintenance steps and settings guidance in the DS603-88412 owner’s manual.

• Clean the drain filter and filter plate on a regular schedule
• Rinse or clear the spray arm holes if you see poor wash performance
• Run hot water at the sink before starting a cycle (helps heating performance)
• Check under-sink plumbing and the drain connection for seepage
• Address fault codes promptly instead of repeatedly restarting cycles

DishDrawer designs rely on tight seals, clean filtration, and reliable drainage. When leaks or drain restrictions are ignored, they can shorten the life of key components like the pump motor, wiring harness, and control electronics.

Last updated: January 2026