CodeRegistry
Brands
  1. Home
  2. Mitsubishi Electric
  3. MSZ-AP Air Conditioners
  4. Operating during construction
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

Operating during construction

Water leakage or dew scattering — Operating during construction/finishing work

Mitsubishi Electric · MSZ-AP Air Conditioners

What does Operating during construction mean?

Operating the air conditioner during interior construction, finishing work, or floor waxing can introduce volatile elements into the air. These elements may adhere inside the air conditioner, leading to unintended water leakage or the scattering of dew.

Common Causes

  • Volatile elements from construction, finishing work, or waxing adhering to internal unit components.
  • The air conditioner being operated in a room with these ongoing conditions.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Avoid operating the air conditioner during interior construction, finishing work, or when waxing floors.

  2. 2

    Ensure the room is thoroughly ventilated after such work is completed and before turning the air conditioner on.

  3. 3

    If water leakage or dew scattering occurs, stop the unit, ventilate the room, and contact service if the problem persists.

  4. 4

    Clean air filters more frequently if the unit has been exposed to dusty environments.

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
Open Manual (Page 2)Search more codes in this manual