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POWER lamp 1-time flash (Air Purifying Recall) - Power Control

POWER lamp 1-time flash — AIR PURIFYING power control failure (air purifying recall mode)

Mitsubishi Electric · MSZ-FH Air Conditioners

What does POWER lamp 1-time flash (Air Purifying Recall) - Power Control mean?

When in air purifying power failure mode recall function, the POWER lamp flashes once. This indicates that the AIR PURIFYING power cannot be turned OFF even when the AIR PURIFYING operation is turned OFF with the remote controller, or a specific voltage drop at CN1T1 (+)-(GND).

Common Causes

  • AIR PURIFYING power control malfunction
  • Issue with remote controller signal
  • Problem with electronic P.C. board

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Refer to 10-6. 'Check of AIR PURIFYING power' (further details may require an installer).

  2. 2

    Ensure the remote controller is working correctly and sending signals.

  3. 3

    Turn OFF the power supply to the unit for a few minutes, then turn it back ON.

Browse all codes in this manual (41)
Verified technical data. Last updated: April 2026

Related Faults

3-minute delayCompressor does not restart immediately — 3-minute time delay activeAIR PURIFYING lamp 2-time flashAIR PURIFYING lamp flashes 2 times — Air purifying power supply issue or front panel not closedAIR PURIFYING lamp 2-time flash - CircuitAIR PURIFYING lamp 2-time flash — Air purifying power control circuit error
Source: Mitsubishi Electric MSZ-FH Air Conditioners
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