A256546 Genuine Air Break with Turbine for Ariston Dishwashers, Ariston Dishwasher Air Break and Flow Turbine Assembly

A256546 is a genuine Ariston air break with turbine, a dishwasher part that combines two jobs in one housing. The air break gives incoming water a safe gap from the mains supply, and the turbine measures how much water flows into the machine. Ariston dishwashers rely on that reading to fill correctly. We don't have models on file for A256546, so please compare it with your old part before ordering.

Dishwasher not filling right? Check the air break and turbine

Water from the inlet valve passes through the air break before reaching the tub, and a small turbine inside spins as it flows. The control counts those turns to know when enough water has entered. If the turbine sticks, jams with scale or its sensor fails, the dishwasher may underfill, overfill, stop with a fill error, or keep the inlet valve open. A cracked air break housing can leak down the side of the machine, often showing up as water on the floor or a tripped leak sensor.

Part details

• Genuine Ariston part A256546
• Air break and flow turbine in one assembly
• For Ariston dishwashers
• Model fit not on file, compare with your old part

Fitting the air break

Close the water tap and isolate the dishwasher at the power point. The air break usually sits on the side of the tub, so the machine has to come out of its cavity and the side panel off. Photograph the hoses and the turbine sensor wiring, then release the clamps and fixings. Fit the new unit, reconnect everything and run a rinse cycle to check for leaks.

Questions about this part

Can I replace just the turbine?

This part combines the air break and turbine in one listing, so you get both. Replacing them together means the new turbine sits in a clean, uncracked housing. Match the number A256546 on your old part or in your dishwasher's parts list.