Analysis by Lukas & Team

Haier Dishwasher Error E3: Troubleshooting Guide for Australia

Fixing Haier Dishwasher Error E3 in Australia. Expert tips on diagnosis & repair. Check pump, pressure & float switch. Save water & energy!

Technical Background:

Error E3 typically indicates a drainage fault. The dishwasher's control board (PCB) monitors water level via a float switch (AquaStop) and drainage pump current. If the water isn't evacuated within a set timeframe, the E3 error is triggered. This involves the drain pump, the pressure switch, and potentially blocked drainage lines. The PCB uses a relay to energise the drain pump based on signals from the pressure sensor and float switch.

Symptoms:

Error code E3 displayed on the control panel. Dishwasher may halt mid-cycle. Audible alarm or rhythmic beeping may be present. Possible water pooling at the base of the unit is a key indicator.

Possible Causes:

Blocked drain filter or drain hose restricting water flow.
Faulty drain pump impeller or motor winding failure causing insufficient pumping pressure.
Clogged air gap (if installed) preventing proper drainage.
Defective float switch (AquaStop) providing incorrect water level readings.
Kinked or obstructed drain hose connection to the sink drain.
PCB failure (rare, but possible) misinterpreting sensor data.

Solution:

1

Disconnect the dishwasher from the mains power. This is a mandatory safety precaution.
2

Inspect and clean the drain filter located inside the dishwasher tub. Remove any food particles or debris.
3

Check the drain hose for kinks, bends, or obstructions. Disconnect the hose from the drain spigot under the sink and flush it with hot water.
4

Examine the drain pump. Access usually requires removing the lower access panel. Check for blockages and measure the pump motor winding resistance with a multimeter. A significantly high or low reading indicates a faulty pump. Replace if necessary.
5

Verify the operation of the float switch (AquaStop). Manually activate the float and check for continuity using a multimeter. A faulty switch needs replacing.
6

If the unit is hardwired, engage a Licensed Electrician to inspect the wiring and electrical connections to the pump and float switch.
7

After completing the checks, reconnect the dishwasher and run a test cycle. Monitor for recurrence of the E3 error.

Safety Warning:

Disconnecting the dishwasher from the mains power is critical before any troubleshooting. Do not attempt to repair the unit if you are not qualified. High voltage (240V AC) is present. Hardwired dishwashers MUST be inspected and repaired by a Licensed Electrician as mandated by Australian law.

Prevention:

Regularly clean the drain filter (at least monthly). Avoid overloading the dishwasher with excessively soiled dishes. Run a high-temperature cleaning cycle with a dishwasher cleaner every few months to prevent build-up of grease and grime. Ensure the drain hose is properly installed and free from kinks.

Expert Tip:

Many Haier dishwashers have a diagnostic mode accessible via a specific button sequence (consult the service manual). This mode allows you to directly activate the drain pump and test its function without running a full cycle. Use caution as this may bypass safety interlocks.

Frequently Asked Questions

•Is it safe to use vinegar to clean my dishwasher in Australia?

Yes, vinegar can be used for cleaning, but in moderation. It's effective for descaling but excessive use can damage rubber seals. Citric acid is often preferred for sensitive components.

•How often should I clean the dishwasher filter?

Ideally, clean the filter monthly. If you frequently wash heavily soiled dishes, cleaning every two weeks is recommended. This prevents blockages and maintains optimal drainage.

•What does WELS rating mean for dishwashers in Australia?

The Water Efficiency Labelling and Standards (WELS) rating indicates the dishwasher's water consumption per wash cycle. A higher star rating signifies greater water efficiency, saving you money and reducing environmental impact.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Is it safe to use vinegar to clean my dishwasher in Australia?

•How often should I clean the dishwasher filter?

•What does WELS rating mean for dishwashers in Australia?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: