{
  "title": "HVAC equipment data for AI matched-system records",
  "source_page": "https://fiund.com/industries/hvac-matched-system-configuration-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Two listed components still need a matched combination",
    "context": "Mock indoor, outdoor and controller cards encode a fictional combination index.",
    "records": [
      [
        "1",
        "Combination table",
        "Kit A pairs indoor I1, outdoor O2, control C3. Kit B pairs I1, O4, C5."
      ],
      [
        "2",
        "Order",
        "Kit A selected."
      ],
      [
        "3",
        "Installed-item register",
        "I1, O2 and C5 recorded."
      ]
    ],
    "question": "Does the recorded system match a listed combination?",
    "answer": "No. I1 and O2 fit kit A, but its controller should be C3. C5 belongs to kit B, which uses O4. Records 1–3 show a mixed set rather than either whole combination. Preserve the three actual identifiers without claiming technical incompatibility.",
    "failureModes": [
      "Checking indoor and outdoor while dropping the controller",
      "Combining parts from separate listed sets into an unlisted set"
    ],
    "fields": [
      [
        "indoor_unit",
        "Identifies one required key"
      ],
      [
        "outdoor_unit",
        "Distinguishes the paired configuration"
      ],
      [
        "control_id",
        "Completes the combination check"
      ]
    ],
    "holdout": "Add a newer table with C5 approved only for O2 revision B; require the actual outdoor revision.",
    "boundary": "No authentic equipment specs, refrigerant, service procedure, installation or performance claims."
  }
}