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86

Anti-condensation control activated — RUN LED flashes 8 times, TIMER LED flashes 6 times

Mitsubishi Heavy Industries · Air Conditioners

What does 86 mean?

The anti-condensation prevention control is operating. This typically occurs in conditions of high humidity to prevent moisture buildup inside the unit or ductwork.

Common Causes

  • High humidity conditions in the indoor environment
  • Normal operation in specific environmental settings
  • Potential issues with airflow or insulation (less common for this code)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Understand that this is often a normal operational control; allow the unit to continue functioning.

  2. 2

    Ensure the indoor space has adequate ventilation to help reduce overall humidity levels.

  3. 3

    Check that the unit's settings (e.g., fan speed, operating mode) are appropriate for the current humidity level.

  4. 4

    If the control persists abnormally or you notice excessive moisture, ensure there are no underlying issues such as poor insulation or air leakage.

Browse all codes in this manual (110)
Verified technical data. Last updated: April 2026

Related Faults

01Power source faulty — RUN LED OFF, TIMER LED flashes 1 time05Wired remote control wiring error — RUN LED OFF, TIMER LED flashes 5 times35Cooling high pressure control activated — RUN LED flashes 3 times, TIMER LED flashes 5 times
Source: Mitsubishi Heavy Industries Air Conditioners
Open Manual (Page 53)Search more codes in this manual