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AIR PURIFYING lamp continuously blinking

AIR PURIFYING lamp continuously blinks — Protection activated due to wet air purifying device

Mitsubishi Electric · MSZ-FH Air Conditioners

What does AIR PURIFYING lamp continuously blinking mean?

The AIR PURIFYING lamp blinks continuously, indicating that a protection mechanism has been activated. This usually happens if the air purifying device was wet when an operation check was performed.

Common Causes

  • Air purifying device was wet during an operation check.
  • Protection circuit for the air purifying device has engaged.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn OFF the main power supply to the air conditioner.

  2. 2

    Remove the air purifying device and ensure it is completely dry.

  3. 3

    Firmly close the front panel after ensuring the device is dry and reattached correctly.

  4. 4

    Turn the main power supply back ON.

  5. 5

    If the issue persists, contact a qualified service technician.

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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