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Turn off the system power, toggle the internal communication override switch to , restart, and scan again.

Connect the service PC to the DMS502B71 Interface board's serial port using the required cabling, as detailed in the technical documentation. 3. Running SetupMS3.exe Execute SetupMS3.exe on your service PC.

If you are an external controls integrator, request a temporary access token or secure file transfer link directly from your local Daikin Applied representative. Step 3: Identify the Correct Component Version

Proper installation requires administrative system permissions and structured physical device deployment. Software Extraction & Initialization Right-click the downloaded archive and select .

Certified HVAC installers, building engineers, and system integrators can access software downloads by logging into their regional B2B portal.

: Checking the operational status of units to ensure they are communicating correctly on the DIII-NET.

If the specific setup software package or documentation is missing from your active dealer portal account, contact your designated regional Daikin Applied or Daikin AC Technical Representative. They can provide direct, secure file transfers of the installer software bundle, which includes the necessary driver files and official configuration PDFs.

📋 Deployment Cheat Sheet (auto-copied): msiexec /i D-BACS_setup.msi /quiet /norestart AD_INTEGRATION=1