Fisher & Paykel DishDrawer Code F4: no temperature rise while heating

What F4 means

On Fisher & Paykel DishDrawer DD603 and DD605 series dishwashers, F4 means the controller sensed no temperature increase for about four hours while the heating element was on. The element may be disconnected or open circuit, or the temperature sensor or controller may be reporting wrongly. Owners see cold or lukewarm wash water and a drawer that ends the cycle early.

Common causes of F4

Heating element not connected or open circuit
Temperature sensor not reporting the rise
Controller not delivering power to the element

✓ One safe check you can try

1. Switch the unit off and on again. 2. Run the kitchen hot tap until it is hot, then start a short cycle. 3. Feel whether the dishes at the end are warm. 4. If F4 returns, stop using the drawer and call us.

! Why to stop there

Element and sensor are under the tub with water and mains wiring.
Hot supply water can mask the problem, so we measure properly.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other DishDrawer & Dishwasher codes

A70Fisher & Paykel Built-In Dishwasher Code A70: temperature sensing alarm U1Fisher & Paykel DishDrawer Code U1: wash pump has not primed A80Fisher & Paykel Built-In Dishwasher Code A80: turbidity sensing alarm U2Fisher & Paykel DishDrawer Code U2: restricted lid travel F1Fisher & Paykel DishDrawer Code F1: flood sensor activated U3Fisher & Paykel DishDrawer Code U3: filled too quickly or did not drain F2Fisher & Paykel DishDrawer Code F2: motor rotation not sensed U4Fisher & Paykel DishDrawer Code U4: other drawer has an error

F4F4 questions

Does F4 mean no hot water at my sink?

Not usually. It means the DishDrawer's own heating did not raise the temperature. Still, check that your hot tap is working, because poor supply makes any heating problem harder to judge.

Why does the cycle take hours before F4 appears?

The controller waits a long time before deciding the temperature will not rise. That patience explains why F4 can show late in a long cycle rather than at the start.

What do you replace for F4?

We test the element, sensor and controller, then replace only the part that has failed. You see a written price first and the work is backed by our 30-day warranty.