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Fujitsu / AIRSTAGE H-series

Fujitsu CHECK RUN RESULTS status display

After check run, the MONITOR LEDs light in sequence to show whether the connected indoor units match the expected order. This is a setup result display, not a component failure code.

Urgency
informational
Verified
Jul 30, 2026
Fix path
Not an error

What it means

After check run, the MONITOR LEDs light in sequence to show whether the connected indoor units match the expected order. This is a setup result display, not a component failure code.

Urgency

Not an error

This is a normal status or service-mode indication, not an error, unless comfort is poor, the status never clears, or a separate SW1 fault code appears.

Likely causes

    Homeowner fix

    Do not change wiring or DIP switches. If the result shows a mismatch or appears after installation, have the installer correct it.

    When to call a pro

    Call the installing contractor if the result order is wrong, the number of indoor units is wrong, or normal operation does not resume.

    Repair vs replace

    This is a status display, not a repair-or-replace decision.

    Your Fujitsu model

    AIRSTAGE H-series model pages in the Fujitsu catalog help compare this repair path with current replacement options.

    Parts for this line

    The parts catalog for Fujitsu AIRSTAGE H-series lists 6 sourced replacement parts for this product line.

    Open parts page

    For your technician

    Technician note: record the seven-second LED order in the result table before resetting automatic wiring-correction memory. Page context: Fujitsu maps this display to the AIRSTAGE H-series line; source: Fujitsu AOUH18-45KWAS/KWAH R-32 Design & Technical Manual.

    Which systems show it

    • Fujitsu Halcyon/AIRSTAGE R-32 AOUH18KWAS2, AOUH24KWAS3, AOUH36KWAS4, and AOUH45KWAS5 outdoor-unit manuals where Section 14-3 lists the same SW1/MONITOR error-code table.
    • Fujitsu AOUH18KWAH2 and AOUH36KWAH4 XLTH sibling design manuals where the extracted Section 14-3 table matches the KWAS manuals.

    Related troubleshooting

    Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

    Reset note

    Do not change wiring or DIP switches. If the result shows a mismatch or appears after installation, have the installer correct it.

    Manual trigger

    After check run, the MONITOR LEDs light in sequence to show whether the connected indoor units match the expected order. This is a setup result display, not a component failure code.

    Related codes

    Source

    Fujitsu AOUH18-45KWAS/KWAH R-32 Design & Technical Manual
    Section
    Section 14-1 Check run, displayed results
    Page
    PDF pages 247-250; manual pages 241-244

    Short quote: "Fill the displayed results in the result table"

    Sourced Jul 2026

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