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Operation Off 8 Times / Timer 00

Operation LED blinks 8 times (Off) and Timer LED shows 00 — Wired remote controller communication error.

Fujitsu · 410A Multi-Zone Mini-Split Systems

What does Operation Off 8 Times / Timer 00 mean?

The indoor unit (evaporator) is not communicating with the wired remote controller.

Common Causes

  • Loose or incorrect wiring between the evaporator and the wired remote controller.
  • Defective wired remote controller.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the wiring connections between the indoor unit (evaporator) and the wired remote controller for any looseness or damage.

  2. 2

    Ensure the remote controller is properly connected and seated.

  3. 3

    If the error persists, the wired remote control unit may need to be replaced by a professional.

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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