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OPERATION lamp on, stops automatically

OPERATION lamp on, stops automatically — System protecting itself from voltage fluctuations

Daikin · Air Conditioner

What does OPERATION lamp on, stops automatically mean?

The unit stops operating temporarily, but the OPERATION lamp remains on. This usually happens to protect the system from sudden large changes in voltage.

Common Causes

  • Sudden large voltage fluctuations
  • Power surge or dip

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for approximately 3 minutes. The air conditioner should automatically resume operation.

  2. 2

    Ensure your home's electrical system is stable.

  3. 3

    If the issue occurs frequently, consult an electrician.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

0000 — Normal operationA1A1 — Indoor unit PCB defect detectedA5A5 — High pressure or freeze-up protector activated
Source: Daikin Air Conditioner
Open Manual (Page 28)Search more codes in this manual