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Water leakage

Water leakage — Water leaks or drips from the indoor unit

Mitsubishi Electric · MSZ-AP Air Conditioners

What does Water leakage mean?

Water is visibly dripping or leaking from the indoor air conditioning unit. This indicates a potential issue that requires immediate attention.

Common Causes

  • Clogged drain line
  • Frozen evaporator coil
  • Improper installation or drainage issues
  • Damaged parts within the unit

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Stop using the air conditioner immediately to prevent further damage.

  2. 2

    Turn off the air conditioner at the main power supply or breaker.

  3. 3

    Place a container to catch any drips and prevent water damage.

  4. 4

    Consult your dealer or a qualified service technician for diagnosis and repair.

Browse all codes in this manual (87)
Verified technical data. Last updated: April 2026

Related Faults

3 Min Restart DelayUnit cannot be operated for about 3 minutes after restart - Microprocessor protection3 Short Beeps3 short beeps from indoor unit - Weekly timer setting failedAP Mode activatedNET and MODE LEDs flashing (every 5 seconds) - Access Point Mode activated
Source: Mitsubishi Electric MSZ-AP Air Conditioners
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