Floaire Cooling Discharge

What does Floaire Cooling Discharge mean?

The make-up air unit's control board logs a cooling discharge fault when there has been no delta-T for 30 minutes. The board expected the discharge air temperature to change while cooling but found no temperature difference over a half hour. The fault is stored in the View Faults menu, survives a power loss, and remains listed until the underlying condition is corrected and the fault is cleared from the board.

Symptoms

• Cooling discharge fault stored in the View Faults menu
• No change in discharge temperature while cooling is called
• Fault retained even after the board loses power

Common causes

• No delta-T detected at the discharge for 30 minutes during cooling
• Cooling stage not engaging or not producing cooling
• Discharge temperature sensor fault or misplacement
• Insufficient or no airflow across the cooling section

Diagnostic steps

1. 01

   Confirm cooling is operating

   Verify the cooling stages are being commanded on and the condenser(s) are running.

2. 02

   Check airflow through the unit

   Ensure adequate airflow across the cooling section, since no airflow prevents a discharge temperature change.

3. 03

   Inspect the discharge sensor

   Confirm the discharge temperature sensor is connected and correctly positioned to read discharge air.

4. 04

   Resolve, then clear the fault

   After restoring a measurable delta-T, use Clear Faults; an unresolved cooling condition can bring the fault back.

When to call a professional

Call a qualified refrigeration or HVAC technician if cooling does not engage, produces no measurable temperature drop, or the fault returns after sensor and airflow checks. Diagnosing a cooling circuit that will not produce a delta-T involves refrigerant-charged condensers, compressor controls, and line-voltage wiring, so this work should be left to a professional certified to service the unit's cooling system.