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Haier·Dishwasherhigh severity
Haier Dishwasher Error Code E4
Overflow — the anti-flood float has tripped
Common Causes
- 1Water leaking into the base tray
- 2Overfilling from a stuck inlet valve
- 3Cracked sump or hose fitting
- 4Anti-flood float stuck up
Standing water in the base sits beside mains connectors — keep the dishwasher unplugged while drying the tray.
Step-by-Step Troubleshooting
- 1
Unplug the dishwasher and check the base tray for standing water that has floated the anti-flood switch and latched E4
- 2
Trace the sump, spray-arm feed, and hose fittings for a drip that fills the base slowly during the wash
- 3
Verify the inlet valve closes fully by watching whether water keeps entering after the fill target is reached
- 4
Dry the base tray completely and reseat the float, then run a rinse and watch where water first reappears
- 5
Replace a cracked sump seal or hose clamp, or the inlet valve if it fails to shut off
Pro Diagnostic Tip
Haier anti-flood systems latch E4 until the base is dry, so the code often persists for a cycle after the leak is fixed — towel the base tray dry before deciding the float itself has failed.
You Might Also Notice
- •Water pooling under the unit
- •Pump runs continuously
- •Cycle will not start
- •Damp cabinet floor
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$110–$260
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Anti-flood float switchSump sealWater inlet valve
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
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Get Professional Help Now
Error code E4 is a high-severity issue that can cause further damage to your dishwasher if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Haier error code E4 mean?
Haier error code E4 indicates: Overflow — the anti-flood float has tripped. This is a high-severity issue affecting your dishwasher.
How do I fix Haier error code E4?
Unplug the dishwasher and check the base tray for standing water that has floated the anti-flood switch and latched E4 Then, Trace the sump, spray-arm feed, and hose fittings for a drip that fills the base slowly during the wash Then, Verify the inlet valve closes fully by watching whether water keeps entering after the fill target is reached There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dishwasher has error E4?
Besides the error code on the display, common signs include: Water pooling under the unit; Pump runs continuously; Cycle will not start. If you notice any of these symptoms, check your dishwasher's display panel for error code E4.
How much does it cost to fix Haier E4?
Repair costs for Haier E4 typically range from $110 to $260 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.
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