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The odd word
Bertazzoni’s table spells the fault F9 (F09 on some lists) as “Divisor position error”. The usual word is diverter. In dishwashers a diverter is a valve or flap that sends the circulating water to one spray level or another. Its position matters, because the machine has to know where the water is going.
What the table prints
Only two things: the fault and the action, which is to contact service. It does not say whether the diverter is stuck, whether a motor is involved, or whether the sensor reading its position has failed. Any of those would be a guess.
Owner steps
- Cancel the program.
- If F9 comes back, contact service.
Related fault codes
- F2: F2, where the drain path is the thing to check first
- F5: F5, another system-level fault with a service-only answer
Questions about F9
Does F9 mean the spray arms are broken? The table does not mention spray arms. It names the position of the diverter.
Why is there no owner step? Bertazzoni prints only contact service for this code.
Diverter faults: dishwasher service in San Francisco
Call (415) 692-0756 if F9 appears again on your Bertazzoni dishwasher. A technician will take it from there in San Francisco.
Model compatibility: Bertazzoni reuses codes across series and model years, so F9 / F09 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
