Fisher & Paykel Built-In Dishwasher Code A80: turbidity sensing alarm

What A80 means

Fisher & Paykel DW24U and DW60 built-in dishwashers, such as the DW24U6I1 and DW24U2I1, show A80 as an alarm error in turbidity sensing. The turbidity sensor judges how cloudy the wash water is and helps the machine decide how long to wash and rinse. When that reading fails, owners see A80 and the cycle may stop or run in a basic way.

Common causes of A80

Turbidity sensor covered by film or residue
Sensor connection that has loosened
Sensor that no longer gives a stable reading

✓ One safe check you can try

1. Switch the dishwasher off, then back on, and restart a cycle. 2. Pull out the lower rack and clean the filter under the spray arm, rinsing it under the tap. 3. Wipe visible film from the tub floor with a soft cloth. 4. Run a short cycle. If A80 returns, call us.

! Why to stop there

A dirty filter can mimic a sensor alarm, but a failed sensor needs replacement by a technician.
The sensor sits in the water path and is connected to live wiring.

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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A80A80 questions

What is the turbidity sensor?

It is a small optical sensor in the water path that measures how cloudy the wash water is. The dishwasher uses it to adjust the cycle, so A80 tells us that reading is not working.

Can a dirty filter cause A80?

A clogged filter can leave heavy residue in the tub, which may affect the water reading. Cleaning it is a safe first step, but a code that returns afterward points to the sensor itself.

Is it okay to run cycles with A80 showing?

We recommend pausing. Without a working reading, washing results can be poor. We can check the sensor and quote a written price first, with a 30-day warranty on the repair.