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AIR PURIFYING lamp off

AIR PURIFYING lamp off — Front panel not closed

Mitsubishi Electric · MSZ-FH Air Conditioners

What does AIR PURIFYING lamp off mean?

The lamp indicating the air purifying operation is not lighting up. This means the function is not active. This typically happens when the front panel of the indoor unit is not properly shut.

Common Causes

  • Front panel of the indoor unit is not completely closed.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if the front panel of the indoor unit is securely closed.

  2. 2

    Gently push on the front panel to ensure it latches properly.

  3. 3

    Once the panel is closed, press the PURIFIER button again to activate the operation.

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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