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Quick answer
Do not assume i30 has one meaning across Westinghouse dishwashers. An opened official Westinghouse Australia manual for the WDU903 defines i30 as operation of the anti-flood device and directs the owner to close the water tap and contact Customer Care. Because your model is not supplied, photograph the complete display, identify the rating-label model and PNC or serial information, and use the manual for that exact appliance before applying the WDU903 meaning. If there is visible water, standing water, continuous filling or pumping, or water near electrical parts, stop using the dishwasher; close the water supply and isolate power only from a safe, dry position, without tilting the machine or opening its base.
Work through in order
Diagnostic checks
Use only checks that match the exact appliance or system and its official guide.
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Check 1
From outside the appliance, photograph the complete display and record whether it is exactly i30, I30, 130, or another pattern, along with beeps, flashing indicators, the selected cycle, and the point at which the display appeared.
Expected result: The display is a stable i30, contains extra characters or lights, or cannot be read reliably; water may be entering, draining, or remaining in the tub.
Next step: Keep the dishwasher stopped while identifying the model. If water is entering or a leak is active, close the accessible water tap before doing further checks.
Stop if: Do not keep restarting the cycle, enter an undocumented service mode, or treat a display resemblance as confirmation of i30.
Why this matters
Why: The exact display and cycle stage are needed to select the correct Westinghouse manual. A similar-looking character is not enough to apply the WDU903 i30 definition.
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Check 2
Read the rating-label model and, if shown, the PNC or product number and serial number without moving the dishwasher or removing a panel. Use Westinghouse's official support route to open the manual for that exact identity and market.
Expected result: The label matches WDU903, identifies another model, or the model and market remain unknown.
Next step: If it is WDU903, close the water tap and arrange Customer Care. Otherwise, follow only the matching manual or give the model, serial information, display photo, and market to Westinghouse support or qualified service.
Stop if: Do not use another Westinghouse series' error chart or order an anti-flood, valve, pump, or control part from i30 alone.
Why this matters
Why: For the opened WDU903 manual, i30 has the specific anti-flood meaning and a close-the-tap/service instruction. For another or unidentified model, the code meaning remains unresolved and must not be transferred from WDU903.
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Check 3
With the dishwasher stopped, inspect only what is visible from the normal standing position: the floor and front edge for wetness, the door perimeter for obvious leakage or obstruction, the accessible water-supply shutoff, and any visible hose section under the sink. Do not disconnect a hose or reach into the base.
Expected result: There is active water, dried water or detergent foam, standing water in the tub, a continuous fill or pump sound, or no visible water and no abnormal sound.
Next step: For active wetness, standing water, or continuous filling/pumping, leave the appliance off, close the water tap, and isolate power only if the electrical area is dry and the disconnect is safely reachable. With no visible hazard, continue only with exact-model documentation.
Stop if: Do not tilt the machine, force water out, remove the base, probe under the tub, or perform a live leak or valve test.
Why this matters
Why: Water or persistent filling/pumping makes the water-safety branch more urgent, but no visible water does not disprove an intermittent or concealed condition. A clear visible area does not identify an internal part.
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Check 4
If the exact manual identifies a permitted owner-level reset or cancel step, perform it no more than once after the water and electrical safety check; the opened WDU903 i30 entry itself directs closing the tap and contacting Customer Care rather than a user reset.
Expected result: The code clears and the dishwasher stays idle without water symptoms, or i30 returns immediately or after the next attempted operation.
Next step: Do not repeat the reset or run a supervised test cycle. Keep the water tap closed when appropriate and provide the service technician the model, serial information, complete display, cycle stage, and water observations.
Stop if: Stop immediately for a leak, standing water near electrical parts, smoke, burning odor, hot or damaged wiring, breaker trip, or abnormal continuous pump/fill behavior.
Why this matters
Why: A cleared display is not proof that a water-safety condition is resolved. Immediate or repeat i30, especially with wetness or continued filling/pumping, remains an unresolved fault requiring model-specific service.
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Check 5
Prepare a service handoff with the exact display photo, model and PNC or product number, serial number, market, selected cycle, whether filling or draining had started, visible wetness or standing water, and whether the water tap was closed.
Expected result: The model cannot be matched, the manual does not define the displayed pattern, i30 recurs, or any leak or electrical symptom remains.
Next step: Arrange Westinghouse or qualified appliance service and keep the dishwasher out of use until the water-safety condition is resolved.
Stop if: Do not open the cabinet, disconnect pressurized plumbing, test energized wiring, bypass a float or door interlock, or replace a part solely from i30.
Why this matters
Why: Westinghouse's service route needs appliance identity information to select the proper repair path. A recurring or unmatched code requires diagnosis rather than a guessed valve, pump, anti-flood sensor, or control board.
Use your observations
Decision map
Find the observation that best matches what you see, then follow the next safe action.
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PATH 01Next step
What you see
The exact rating label and manual match Westinghouse WDU903, and i30 appears with active wetness, standing water, continuous filling, or continuous pumping.
Do this next
Close the water tap, stop using the dishwasher, isolate power only from a safe dry position, and contact Customer Care or qualified service. Do not tilt the dishwasher or open its base.
Why this path and its safety boundary
Why it matters: This matches the WDU903 manual's anti-flood-device branch; the code is a water-safety signal, not a reason to select a particular replacement part.
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PATH 02Next step
What you see
The display appears to be i30 but the model is not WDU903, the model is unknown, or the display contains extra characters.
Do this next
Use the exact model and market manual or contact Westinghouse support with the model, serial information, code photo, and cycle stage; keep the appliance off if the code recurs or water symptoms are present.
Why this path and its safety boundary
Why it matters: The opened i30 definition cannot be safely applied to that identity. A cross-series or cross-market code interpretation would be unsupported.
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PATH 03Next step
What you see
No water is visible, but i30 returns or the dishwasher repeatedly fills or pumps after a permitted one-time documented action.
Do this next
Leave the water tap closed as appropriate, do not run another cycle, and arrange model-specific qualified service.
Why this path and its safety boundary
Why it matters: The absence of visible water does not clear a recurring water-safety alert; a concealed or intermittent condition remains possible, but the sources do not justify naming the failed component.
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PATH 04Next step
What you see
The dishwasher has water near electrical parts, smoke, a burning odor, a hot or damaged cord or connection, or a repeated breaker trip.
Do this next
Stop using the appliance, close the water supply, and isolate power only from a safe dry position; obtain qualified appliance or electrical help. Do not reconnect it to test the result.
Why this path and its safety boundary
Why it matters: An electrical or fire-safety hazard takes priority over interpreting the code.
Helpful context
Understand the symptom
Why the exact model matters
The opened Westinghouse Australia WDU903 user manual lists i30 as operation of the anti-flood device. That manual's action is to close the water tap and contact Customer Care; it does not establish i30 as a brand-wide code for every Westinghouse dishwasher. Westinghouse's support page tells owners to use the model number to obtain the applicable manual, so an unidentified dishwasher must remain conditional rather than inherit a code chart from another series.
Treat water and electrical symptoms as the first safety decision
A code by itself does not prove which component is involved. If the machine is filling continuously, pumping without stopping, leaking, or leaving water near a plug or other electrical area, leave it off. Use only accessible shutoffs and controls from a dry position; do not tip the dishwasher to drain it, pull it out to expose hidden connections, remove the base, or run it again to see whether the code disappears.
When checks do not resolve it
Need a professional?
Arrange service when the exact model is WDU903 and i30 is displayed, when another model's manual does not define the code, when i30 returns, or when there is visible leakage, standing water, continuous filling or pumping, smoke, burning odor, heat damage, or a breaker trip. Close the water tap and leave the dishwasher off; isolate power only from a safe, dry position.
Have this ready
- Complete display photo, model and PNC or product number, serial number, market, cycle stage, onset, filling or draining behavior, visible water or foam, and whether the water tap was closed.
Common questions
FAQ
What does i30 mean on a Westinghouse dishwasher?
The opened official Westinghouse Australia WDU903 manual defines i30 as operation of the anti-flood device and says to close the water tap and contact Customer Care. Because your task has no exact model, do not transfer that meaning to another Westinghouse dishwasher without its matching manual.
Should I reset i30 or tip the dishwasher to drain it?
Do not tip the dishwasher or use an undocumented reset. The opened WDU903 manual directs the owner to close the water tap and contact Customer Care. For another model, use only its exact manual; if there is water or the code recurs, keep the dishwasher off and arrange service.
What if there is no visible water when i30 appears?
No visible water does not prove that the alert is harmless or that the water-safety condition is resolved. Confirm the model and complete display, keep the appliance off if i30 returns, and obtain model-specific service rather than opening the base or running repeated tests.
Read the exact guide
Official sources
- Product SupportWestinghouse Australia · Opened official Westinghouse Australia support page; it says error messages should be interpreted from the user manual and that the manual is selected by model number.
- Service & RepairWestinghouse Australia · Opened official Westinghouse Australia service page; it requires appliance type, model number, and serial number for service routing.
- user manual Dishwasher WDU903Westinghouse Australia · Opened official Westinghouse Australia WDU903 manual; its i30 meaning applies to WDU903 only, not an unidentified Westinghouse dishwasher.
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