PAC-SDW01RC-3 Replaces PAC-SDW01RC-2 | New Features, Comfort App Integration & Upgrades

PAC-SDW01RC-3 Replaces PAC-SDW01RC-2: What’s New and Why It Matters

The Mitsubishi Electric PAC-SDW01RC-3 is the latest evolution of the Simple Ductless Wired Remote Controller, replacing the PAC-SDW01RC-2 with a range of functional and integration-focused enhancements. While maintaining the same core purpose—simple, wall-mounted control of Mitsubishi indoor units—the new revision introduces meaningful improvements in connectivity, system integration, and user experience.



1. Seamless Integration with the Comfort App

One of the most significant upgrades is native compatibility with the Comfort App. The PAC-SDW01RC-3 can now connect directly via the red connector on the Wireless Interface 2 or through the CN105 connector on indoor units with built-in Wi-Fi.

When ISU 134 is set to “Installed,” the controller transitions key functions—such as Auto Mode and scheduling—from the wall controller to the app. This creates a centralized control strategy where advanced scheduling and automation are managed digitally, while the wall controller remains a simple, local interface.


2. Improved System Behavior for Ducted Applications

For ducted systems, the PAC-SDW01RC-3 introduces smarter fan control. The controller will now automatically shut off the indoor unit fan once the setpoint is reached, improving comfort and reducing unnecessary airflow and energy consumption.

Additionally, minimum and maximum setpoint limits are now automatically configured based on the connected model, eliminating the need for manual adjustment and reducing commissioning time.


3. Expanded Integration with Auxiliary Equipment

A key enhancement in the PAC-SDW01RC-3 is the addition of ISU 201, which brings PAA (Programmable Auxiliary Application) settings directly into the main menu. This enables more advanced control logic when integrating external devices such as:

  • Dehumidifiers
  • Ventilation systems
  • Auxiliary indoor unit connectors (CN25, CN2C, CNER)

Installers can now configure the behavior of G/W/Y terminals with greater precision, making the controller far more capable in hybrid or IAQ-focused system designs.


4. Enhanced System Visibility and Diagnostics

The updated controller improves transparency and troubleshooting capabilities:

  • Furnace changeover status is now displayed (Extended vs. Balanced), giving clearer insight into system operation in dual-fuel or hybrid setups.
  • Error codes now reappear after being snoozed, ensuring that intermittent or unresolved issues are not overlooked.


5. Refined User Experience

Mitsubishi has also focused on usability with this revision:

  • A new, more intuitive menu layout simplifies navigation and reduces setup complexity
  • A decorative wall plate is now included, improving installation aesthetics and reducing the need for additional accessories


What sets it apart from the PAC-SDW01RC-2:

  • Comfort App integration with centralized scheduling and Auto Mode control
  • Automatic fan shutoff for ducted systems
  • Model-based setpoint limits
  • New PAA configuration (ISU 201) for auxiliary equipment integration
  • Enhanced diagnostics and system visibility
  • Improved menu design and included a wall plate