Bertazzoni Dishwashers F9 Error: Circulation pump fault
What Does F9 Mean on a Bertazzoni Dishwasher? F9 signals a circulation fault on Bertazzoni ASKO-built dishwashers. The wash motor drives the impeller that forces water up through the spray arms; when the control board detects that the motor is not running or is drawing abnormal current, it raises F9 and stops the wash phase. […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Without circulation the dishwasher cannot clean or rinse dishes, and continued operation with a seized motor risks overheating the pump assembly.
Can I reset the code?
Yes. A reset can recover from a transient motor overload, but F9 caused by a seized motor or blocked impeller requires physical intervention.
When to stop immediately?
Stop if you notice: F9 returns after the sump has been cleared of all debris., No spray-arm noise is heard even on a short rinse cycle..
Symptoms You May Notice
Dishes visibly unwashed after full cycle
Food residue remains on dishes and cutlery exactly as loaded, indicating water never circulated through the spray arms.
No audible spray noise during wash
The normal rushing water sound from rotating spray arms is absent throughout the wash phase.
Possible Causes
Seized or failed wash motor
The circulation motor has burned out or seized mechanically, preventing the impeller from spinning.
Requires ProfessionalBlocked impeller
A fragment of broken glass, bone, or hard debris has jammed the pump impeller, stalling the motor under load.
DIY PossibleSafe Checks You Can Do
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1
Clean the pump filter and sump
Remove the lower spray arm and unscrew the cylindrical filter assembly. Check the sump area for glass fragments, seeds, or hard debris that could block the impeller.
Wear rubber gloves when reaching into the sump — broken glass is a common cause of F9.
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2
Run a rinse cycle after clearing debris
Reassemble the filter, load nothing into the machine, and run a short rinse cycle. Listen for the spray arm circulation sound resuming.
If water circulates normally on an empty rinse, the blockage was the cause.
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3
Power-cycle if the sump is clear
If no debris is found, switch off the breaker for 60 seconds and restart. A momentary motor overload may clear with a cold reset.
F9 that returns after clearing debris and resetting points to a failed motor.
When to Call a Professional
Contact a qualified technician if:
- Pump impeller is clear of debris but the motor does not start.
- Motor windings test open or shorted with a multimeter.
- F9 reappears immediately after every reset.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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