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Error code · Haier

E21 · Uncontrolled water supply

The error indicates an uncontrolled water supply due to an open solenoid valve. Close the water tap immediately and disconnect the appliance from the power supply.

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Safe first steps

  1. Close the water tap to stop the water supply.
  2. Disconnect the dishwasher from the power supply by unplugging it.
  3. Inspect the solenoid valve for any visible damage or leaks.
  4. If the solenoid valve appears damaged or the issue persists, arrange a service visit.

When to stop

  • Stop if you see water leaking near the solenoid valve or electrical connections — risk of electric shock

Likely cause

The error indicates an uncontrolled water supply due to an open solenoid valve. Close the water tap immediately and disconnect the appliance from the power supply.

Verification

Reviewed by: automated manual extraction

Verified against Haier XF 4A4M4BX-80 technical documentation

FixLens publishes its own structured technical logic verified against Haier XF 4A4M4BX-80 documentation · last verified April 23, 2026.

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