i30Frigidaire Dishwasher — Frigidaire Dishwasher i30 Error Code

The i30 code means the dishwasher's anti-flood sensor (a float switch in the base tray under the dishwasher) has detected water where it shouldn't be. This typically indicates an internal water leak — common sources include a failed door seal allowing water to escape during washing, a cracked wash arm spraying water at the wrong angle, a leaking hose connection inside the dishwasher, or a faulty water inlet valve that overfills the tub. Some i30 codes are triggered by a suds overflow from using too much detergent or non-dishwasher detergent.

Tilt the dishwasher forward carefully to drain water from the base tray, then allow it to dry completely. Pull the dishwasher out and inspect for the source of the leak: check the door gasket for tears or gaps, inspect all internal hose connections, and check the water inlet valve. If the leak was caused by excess suds (using regular dish soap by mistake), run 2–3 empty rinse cycles after drying the base tray. Do not run the dishwasher until the source of the water in the base is identified and resolved.