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Lamp not lighting

Unit display lamp not lighting normally

Haier · Ductless Split Air Conditioners

What does Lamp not lighting mean?

The indicator lamp on the indoor unit's display is not lighting up as expected, or it is showing an unusual pattern. This could signal a power issue or an operational fault within the unit.

Common Causes

  • No power supply reaching the unit.
  • A tripped circuit breaker for the air conditioner.
  • Incorrect electrical wiring connections.
  • A fault with the lamp or display component itself.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the air conditioner is properly plugged in (if applicable) and that the power source is active.

  2. 2

    Check the main electrical panel for a tripped circuit breaker corresponding to the air conditioner; reset it if necessary.

  3. 3

    Ensure all electrical wiring connections, including the power source and indoor unit wiring, are correct and firmly inserted.

  4. 4

    Try resetting the unit by turning it off at the circuit breaker for a few minutes, then turning it back on.

  5. 5

    If the display lamp still does not light normally, contact a qualified technician for inspection.

Browse all codes in this manual (27)
Verified technical data. Last updated: April 2026

Related Faults

Condensate at air outletCondensate water forming at the air outletCondensate drain issueCondensate water not draining correctlyCondensate on louverCondensate water forming on vertical louver
Source: Haier Ductless Split Air Conditioners
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