Floaire Alarm 1 (Float Switch) Error Code

What does Floaire Alarm 1 (Float Switch) mean?

Alarm 1 is the float switch fault stored by the make-up air unit's control board and viewable in the View Faults menu. The board keeps this fault in memory even after losing power. It is one of the possible faults the board logs, alongside the airflow, heating discharge, and cooling discharge faults, and it stays listed until the float switch condition is cleared and the fault is wiped.

Symptoms

• Alarm 1 (float switch) listed in the board's View Faults menu
• Fault retained after the board loses power
• Float switch in the unit has activated

Common causes

• Float switch tripped by accumulated condensate or water
• Blocked or restricted condensate drain
• Stuck or faulty float switch
• Float switch wiring fault

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Diagnostic steps

1. Check for standing water

   Inspect the area monitored by the float switch for condensate or water buildup that would trip it.

2. Clear the drain path

   Verify the condensate drain is open and draining freely so water does not accumulate.

3. Verify the float switch

   Confirm the float switch moves freely and is wired correctly so it reports the true condition.

4. Clear the fault and monitor

   After the condition is resolved, use Clear Faults; if the float condition persists, the alarm can re-appear.

When to call a professional

Call a qualified technician if water keeps accumulating, the float switch appears stuck or faulty, or the alarm returns after the drain is cleared. Resolving a recurring float switch alarm can require accessing internal drain pans and the float switch wiring inside a powered unit, so anyone not equipped to safely work inside the make-up air enclosure should have a professional inspect and repair it.