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AIR PURIFYING lamp 2-time flash

AIR PURIFYING lamp flashes 2 times — Air purifying power supply issue or front panel not closed

Mitsubishi Electric · MSZ-FH Air Conditioners

What does AIR PURIFYING lamp 2-time flash mean?

The AIR PURIFYING lamp indicates a problem with the air purifying power supply. This can be caused by the front panel not being firmly closed, or if the air purifying device is dirty or wet.

Common Causes

  • Front panel not firmly closed.
  • Interlock switch for air purifying device is not functioning correctly.
  • Air purifying device is dirty.
  • Problem with the AIR PURIFYING power supply.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the front panel is firmly closed.

  2. 2

    Clean the air purifying device and ensure it is completely dry before reattaching.

  3. 3

    Turn OFF the AIR PURIFYING power (refer to manual section 10-2.3) and then turn it back ON.

  4. 4

    If the issue persists, turn OFF the main power supply and check the interlock switch for the air purifying device to ensure it is firmly fixed.

  5. 5

    Contact a qualified service technician if the problem continues.

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 flash - CircuitAIR PURIFYING lamp 2-time flash — Air purifying power control circuit errorAIR PURIFYING lamp 2-time flash - Normal TroubleshootingAIR PURIFYING lamp 2-time flash — AIR PURIFYING power control trouble (normal troubleshooting)
Source: Mitsubishi Electric MSZ-FH Air Conditioners
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