Fujitsu General Australia

Overview

Each signal amplifier in a Fujitsu VRF system requires a unique address (A1–A8) for proper communication with the system network. Addressing is performed using the push switches SW3, SW4, and SW7 located on the Signal Amplifier Controller PCB.

1. Power On

• Ensure the signal amplifier is connected and powered.

• The 7-segment LED display on the PCB will illuminate, showing the current operational mode.

2. Enter Address Setting Mode

1. Hold down the SET button (SW4).

2. While holding SW4, press and release the RESET button (SW7).

3. Continue holding SW4 until the display begins flashing (e.g., A.1).

   • The flashing display confirms entry into address setting mode.

3. Display the Current Address

• Press SW4 once to display the existing address.

  • The display will show something like A.3, indicating the current signal amplifier address.

4. Select a New Address

1. Press the MODE button (SW3) to scroll through available address options.

   • Each press increments the address:
     A1 → A2 → A3 → A4 → A5 → A6 → A7 → A8 → (back to A1)

2. Once the desired address is displayed, press SW4 to confirm the selection.

Note:

• A1 is reserved for auto-address setting (factory default).

• Addresses A2–A8 should be manually assigned when multiple amplifiers are used.

5. Exit Address Setting Mode

You can exit the address setting mode using one of the following methods:

Method A – Power Cycle

1. Turn the power OFF, then back ON.

2. The display will return to the normal operational screen (steady LED).

Method B – Reset Button

• Press the RESET button (SW7) once.
  The display will return to normal mode.

6. Verification

• After exiting the setting mode, press SW4 again to confirm that the correct address is displayed.

• Ensure no two amplifiers on the same VRF network share the same address.

Button Function Summary

Typical Use Case

• A1 (Auto): For systems with one amplifier.

• A2–A8 (Manual): For multi-amplifier networks; assign unique addresses to each device.