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AIR PURIFYING lamp continuous blink

AIR PURIFYING lamp continuously blinks — Air purifying device dirty, wet, or malfunction

Mitsubishi Electric · MSZ-AY Air Conditioners

What does AIR PURIFYING lamp continuous blink mean?

The AIR PURIFYING lamp continuously blinks during an AIR PURIFYING power operation check, or if the air purifying device is wet after cleaning. This indicates that protection is active due to dirt, moisture, or a device malfunction.

Common Causes

  • Air purifying device is very dirty
  • Air purifying device is wet after cleaning
  • Abnormal discharge from air purifying device
  • Air purifying device malfunction

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Clean the air purifying device thoroughly.

  2. 2

    Ensure the air purifying device is completely dry before reattaching it.

  3. 3

    Turn AIR PURIFYING power OFF and ON again (refer to 10-2.3 in the manual for turning OFF).

  4. 4

    If the issue persists, the air purifying device may need to be replaced by a qualified technician.

Browse all codes in this manual (43)
Verified technical data. Last updated: April 2026

Related Faults

AIR PURIFYING lamp 2 blinksAIR PURIFYING lamp blinks 2 times — Front panel not firmly closed or interlock switch issueAIR PURIFYING lamp 2-time blinkAIR PURIFYING lamp blinks 2 times — Air Purifying device error (real-time)AIR PURIFYING lamp continuously blinkingAIR PURIFYING lamp continuously blinking — Air Purifying power control circuit out of order
Source: Mitsubishi Electric MSZ-AY Air Conditioners
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