Fujitsu General Australia

1. Purpose

The Test Run verifies correct installation, wiring, refrigerant charge, and system operation before commissioning.
It allows technicians to check cooling and heating performance, system communication, and outdoor unit functionality.

2. Preparation

Before starting the test run:

• Confirm power supply is correctly connected and all indoor/outdoor units are energized.

• Ensure all addressing (manual or auto) has been completed.

• Check that no error codes are displayed (LED102 must be OFF).

• Indoor units must be powered ON but OFF at controllers.

• Ensure air filters and fan guards are fitted and that refrigerant piping and wiring are properly insulated and secured.

⚠️ Safety Note:
The system will automatically stop test operation after 60 minutes.
To manually stop or change between cooling and heating, the “02 – Test Run Stop” mode must be used.

3. Test Run Initiation

The Test Run is started from the Outdoor Unit PCB using the push-button switches.

Outdoor PCB Controls

• SW107 – MODE/EXIT

• SW108 – SELECT

• SW109 – ENTER

LED Display indicators:

• LED105 / LED104 – 7-segment numeric display

• LED101 (Green) – Power ON

• LED102 (Red) – Error indicator

4. Test Run Procedure

Step 1 – Enter Function Mode

1. Press MODE/EXIT (SW107) once.
   → Display shows: F1

2. Press SELECT (SW108) once.
   → Display shows: F2

3. Press ENTER (SW109) once.
   → Enters Function Mode Selection.

Step 2 – Select Test Run Function

1. Use SELECT (SW108) to cycle through function options.
   Options displayed:

   • 00 → Cooling Test Run

   • 01 → Heating Test Run

   • 02 → Test Run Stop

   • 03 → Central Control Forced Reset

2. Stop on the desired test:

   • Cooling Test Run: 00

   • Heating Test Run: 01

Step 3 – Start the Test Run

1. When the required mode is shown, press and hold ENTER (SW109) for at least 3 seconds.
   → The display will flash, confirming test operation has started.

2. Observe system behavior and confirm:

   • Outdoor fans and compressors start.

   • Indoor fans and louvers operate.

   • Refrigerant pressures and temperatures stabilize.

3. The system will automatically continue test operation for up to 60 minutes, unless manually stopped.

Step 4 – Stop or Change Test Mode

1. To stop a test run manually, press SELECT (SW108) until 02 (Test Run Stop) appears.

2. Press and hold ENTER (SW109) for 3 seconds.
   → Display confirms stop with steady digits.

3. To change mode (e.g., from Cooling to Heating), always stop the test first before selecting a new mode.

5. Post-Test Confirmation

After the test run:

1. Press MODE/EXIT (SW107) to return to Monitoring Mode.
   → Display shows - - or operation mode symbol (C for cooling, H for heating).

2. Verify:

   • No error LEDs are active.

   • All indoor units respond to commands.

   • Suction/discharge temperatures are within design range.

3. Record test data (temperatures, pressures, amperage, refrigerant circuit address) in the commissioning log.

6. Troubleshooting

7. Notes

• Test run is designed for functional verification, not full load testing.

• Do not operate under extreme ambient conditions (below 0°C or above 43°C).

• After test completion, power cycle the system to clear temporary test settings.