Overview

When using the Fujitsu anywAiR ducted control system, the air conditioner can control temperature based on either:

  • The return air sensor (factory default), or

  • A main zone sensor, if zoning is configured.

By default, temperature regulation is performed via the return air sensor located in the indoor unit. However, when zoning is enabled, customers may prefer the temperature to be monitored and controlled from a designated main zone sensor for improved comfort in the primary occupied area.

1. Prerequisites

Before proceeding:

  • Confirm that the anywAiR ducted controller system is correctly installed and communicating with the air conditioner.

  • Verify that all zone sensors are paired and operational.

  • Ensure you are using an approved control box (orange housing) and that the system firmware is current.

2. Procedure – Setting the Main Zone Sensor

Follow the steps below to change control from the return air sensor to the main zone sensor:

  1. Isolate Power

    • Turn OFF power to the air conditioning system at the main isolator.

  2. Adjust DIP Switch

    • Locate the orange control box (main controller).

    • Turn OFF DIP switch No. 5 of 10.

      • This action disables the return air sensor and enables main zone control capability.

  3. Restore Power

    • Turn ON power to the air conditioner.

    • Allow the system to fully boot (approximately 2–3 minutes).

  4. Access Zone Control Screen

    • Navigate to the Zone Screen on the anywAiR controller.

  5. Select Main Zone Sensor

    • Identify the grey thermometer symbol beside each zone name.

    • Tap the thermometer icon for the zone you wish to designate as the main sensing zone.

    • The icon will darken, confirming that the system is now controlling temperature from that zone’s sensor.

3. Verification

  • After selection, the temperature display will reflect the main zone sensor’s reading.

  • Perform a temperature test by adjusting the setpoint and confirming that the system responds accordingly.

  • The controller’s temperature reference should now match the designated zone’s sensor value.

4. Technical Notes

  • If the DIP switch No. 5 is not turned off, the air conditioner will continue to control temperature via the return air sensor regardless of zone configuration.

  • The main zone sensor becomes the master control reference for heating and cooling demand once selected.

  • This configuration can be reverted to default at any time by:

    • Turning ON DIP switch No. 5, and

    • Restarting the system.

5. Cautions

  • Always perform configuration with power isolated to prevent data corruption or component damage.

  • Ensure that no other sensors are assigned as control points simultaneously.

  • Misconfiguration may result in inconsistent temperature regulation or fault codes (e.g., FG81–FG83 sensor configuration errors, per the AnywAiR fault code reference