Ariston Washer Error Code F8

The F8 code on an Ariston washer means the pressure switch has been detected in a shorted position corresponding to a full water level. The pressure switch is the component that tells the control board how much water is in the tub, and when it shorts in the full position, the machine stops operating normally. This fault requires inspection of the pressure switch wiring, the air dome hose, and the switch itself.

It is not recommended to continue using the washer while the F8 error is active. Because the machine is detecting a full water level condition incorrectly, normal fill and drain cycles may not operate as intended. Continuing to run the machine risks improper water handling or cycle failures that could make the underlying issue worse.

A reset may temporarily clear the F8 code and allow the machine to attempt another cycle, but if the underlying fault in the pressure switch circuit is still present, the error will return. Resetting without repairing the root cause is not a lasting solution. The first diagnostic step should be checking the pressure switch wiring for continuity to identify the actual fault.

Some causes of the F8 error are DIY-friendly, particularly if the issue is a kinked air dome hose, a loose connector, or visibly damaged wiring. Testing the pressure switch and wiring with a multimeter is within reach for experienced DIYers. However, if the pressure switch itself or the control board needs replacement, comfort with appliance disassembly and basic electrical testing is recommended before attempting the repair.

Repair costs depend on the root cause. If only wiring or a connector needs attention, costs may be minimal. Replacing a pressure switch typically ranges from $20 to $75 for the part, plus labor if a technician is involved. If the control board is at fault, parts alone can range from $80 to $200 or more, making professional diagnosis worthwhile before committing to board replacement.