Floaire Airflow Error Code

What does Floaire Airflow mean?

On the Floaire make-up air unit, the control board's View Faults menu can store an airflow fault. The board retains stored faults even after it loses power. The airflow fault is one of the possible faults the board records, alongside alarm 1 (float switch), heating discharge, and cooling discharge faults, and it remains visible until the underlying condition is resolved and the fault is cleared.

Symptoms

• Airflow fault listed in the board's View Faults menu
• Fault remains stored even after the board loses power
• Make-up air unit not delivering expected airflow

Common causes

• Insufficient airflow detected through the unit
• Blocked or restricted intake or ductwork
• Blower not running or running below required speed
• Airflow proving device tripped

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Diagnostic steps

1. Inspect the airflow path

   Check intake, filters, and ductwork for blockages or restrictions that would reduce airflow.

2. Confirm the blower is running

   Verify the make-up air blower operates and reaches its commanded speed.

3. Resolve the underlying condition

   Address the cause of low airflow before clearing, since an unresolved fault can re-appear in View Faults.

4. Clear the fault

   Once resolved, use Clear Faults to wipe the fault from the board's memory and confirm it does not return.

When to call a professional

Call a qualified HVAC technician if the airflow fault returns after intake, filters, ductwork, and blower operation have been checked, or if the blower itself does not run. Make-up air units involve high-capacity blowers, multiple disconnects, and line-voltage wiring; diagnosing the airflow proving circuit and blower drive requires working around energized and rotating equipment, so leave that work to a professional.