Westinghouse Dishwasher Error Codes — Fix Guide Australia (2026)

Quick answer: Westinghouse dishwashers in Australia display i-series fault codes—i10, i20, i30, and i50—that identify which system has triggered a fault. The i20 drainage code is by far the most common; in the majority of cases a blocked filter or kinked hose is all that needs attention, and the fix takes under fifteen minutes.

Last updated September 2026

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What do Westinghouse dishwasher error codes mean?

Westinghouse dishwashers sold in Australia are manufactured by Electrolux and share the same fault code conventions as Electrolux and Dishlex models. They display fault codes as i-codes on the control panel—i10, i20, i30, i50—where the number broadly corresponds to the system at fault: inlet water, drainage, base flooding, and water temperature respectively.

Some older or entry-level models use “C” codes (C1, C2, C3, C5) or numeric codes (F10, F20, F30, F50) that map to the same four faults. If your display shows a code not covered here, check the model sticker on the inner door edge—the model number will confirm whether you have an FSA, WSF, or another series and whether your machine uses a slightly different convention.

One important note: Westinghouse dishwashers are sometimes displayed with an “Er” prefix on some control panel styles. Er1 = i10, Er2 = i20, and so on. The cause and fix are identical regardless of which prefix your machine uses.

Westinghouse dishwasher error codes at a glance

What causes a Westinghouse i20 drainage fault?

The i20 code is triggered when the machine cannot empty the drum within its programmed drain cycle time. Before replacing any parts, work through the mechanical causes in order of likelihood—the vast majority of i20 faults are cleared without spending a cent.

How to fix a Westinghouse i20 drainage fault

1. Cancel the running programme and disconnect the machine from power at the wall socket.
2. Open the door and use a jug and towels to remove any standing water from the drum.
3. Pull out the bottom rack to expose the filter assembly in the centre of the tub floor.
4. Grip the cylindrical micro-filter, rotate it a quarter-turn anticlockwise, and lift it free; then remove the flat coarse mesh filter sitting beneath it.
5. Take both filters to the sink, rinse under running water, and scrub lightly with a soft brush to remove compacted food debris. Reassemble and seat them firmly.
6. While the filters are out, shine a torch into the sump cavity and inspect the pump impeller. Use long-nose pliers to remove any glass chip, bone fragment, or debris that may be jamming the impeller.
7. Pull the dishwasher forward slightly and trace the drain hose from the back of the machine to the connection point under the sink. Straighten any kinks. The hose should form a high loop (anti-siphon loop) before dropping into the waste fitting—if this loop has collapsed, reattach the hose to a higher mounting point.
8. At the sink waste fitting, confirm the dishwasher branch is fully open and free of grease or food build-up. If a knock-out plug was never removed when the machine was installed, remove it now.
9. Return the machine to position, reconnect power, and run a short rinse programme. Watch (or listen) for the drain phase—you should hear the pump working actively for 60–90 seconds.
10. If the i20 fault persists after completing all of the above, the drain pump is the most likely failed component. Replace the pump matching your model—see the parts links below.

Related guides: Westinghouse spare parts guide · dishwasher spare parts guide

Frequently asked questions

Can I reset a Westinghouse dishwasher to clear an i20 code without fixing anything?

Cancelling the programme and pressing Start again will clear the display temporarily, but if the drain blockage has not been resolved the code will reappear within the same cycle. There is no factory reset that bypasses the fault—the code can only be permanently cleared once the drainage system is working correctly.

What is the difference between i20 and i30 on a Westinghouse dishwasher?

The i20 code means the machine cannot pump water out of the drum—a drainage blockage or failed pump. The i30 code means water has escaped the drum and is pooling in the sealed plastic base tray beneath the dishwasher, lifting a float switch that locks out the programme. i30 typically indicates a door seal leak, a cracked internal hose, or an overfill event, and is resolved by tilting the machine forward to drain the base tray before investigating the source of the leak.

My Westinghouse shows i10—the tap is on and the hose is not kinked. What else could cause it?

The water inlet valve is the most common cause once supply and hose issues have been ruled out. Scale build-up or solenoid failure will prevent the valve from opening fully, causing a slow fill that times out. The inlet valve part number 0136400041 is compatible across Westinghouse, Dishlex, and Electrolux dishwashers on the same platform. Low household water pressure (below 0.05 MPa) can also trigger i10, particularly during peak morning use.

How do I locate the model sticker on my Westinghouse dishwasher?

Open the door fully and check the inner edge of the door itself—the model sticker is usually on the left or right door jamb, or occasionally on the front face of the tub just inside the door opening. The model number typically begins with WSF (freestanding) or similar. Note both the model and serial numbers before ordering parts.

Is an i50 heating fault worth repairing on an older Westinghouse?

The i50 fault covers both the NTC thermistor (temperature sensor) and the heating element. The thermistor is a low-cost part and is straightforward to replace. The heating element involves more disassembly but is still a practical DIY repair. If the rest of the machine is in good condition, either repair is far more cost-effective than replacement—Westinghouse and Electrolux platform parts are well-stocked and the repair is well-documented.

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• Part Finder Quiz — find parts by model number

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Select the part that matches your fault and model below. If you’re unsure which drain pump suits your machine, enter your model number in the Part Finder quiz for a confirmed match.

• Westinghouse dishwasher drain pump 140000443022 — $32.95
• Westinghouse drain pump WSF6605WR / WSF6605XR / WSF6602XA — $17.85
• Electrolux / Dishlex / Westinghouse inlet valve 0136400041 — $18.85
• Simpson / Westinghouse door switch 0534001801 — $13.65
• Browse all Westinghouse dishwasher parts

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