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Operation 2 Times / Timer 9 Times / 29

Operation LED blinks 2 times, Timer LED blinks 9 times, and wired remote shows 29 — Connection unit number error (indoor unit wired remote control).

Fujitsu · 410A Multi-Zone Mini-Split Systems

What does Operation 2 Times / Timer 9 Times / 29 mean?

The system has detected an incorrect number of connected indoor units, or an issue with the wired remote control address setting.

Common Causes

  • Wrong number of connecting indoor units configured.
  • Damaged Indoor Unit Controller PCB.
  • Incorrect remote control address setting.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the power to all indoor units and the wired remote controller by cycling their circuit breakers.

  2. 2

    Verify that the number of connected indoor units matches the system's specifications in your installation manual.

  3. 3

    If you have access, check the remote control address settings to ensure they are configured correctly.

  4. 4

    If the error persists, professional service is needed to check the controller PCB.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

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Source: Fujitsu 410A Multi-Zone Mini-Split Systems
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