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POWER lamp 5-time flash - Normal Troubleshooting

POWER lamp 5-time flash — Outdoor power system abnormality (normal troubleshooting)

Mitsubishi Electric · MSZ-FH Air Conditioners

What does POWER lamp 5-time flash - Normal Troubleshooting mean?

During normal operation troubleshooting, the POWER lamp flashes five times. This indicates an abnormality in the outdoor unit's power system.

Common Causes

  • Outdoor power system malfunction
  • Inverter/compressor issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Refer to 'How to check inverter/compressor' (further details may require an installer).

  2. 2

    Check the power supply to the outdoor unit to ensure it is stable and correctly connected.

  3. 3

    Contact an authorized service technician for diagnosis and repair if the issue persists.

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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