P2 code, unit stops and beeps, often in high humidity conditions

Safety first: Unplug the unit before tilting or opening it.

• Step 1 – Level the unit:
  • Ensure the air conditioner is on a flat, level surface.
  • For window units, confirm the recommended slight tilt to the outside is maintained.
• Step 2 – Thoroughly drain and clean:
  • Drain all water from both primary and secondary drain ports if present.
  • Clean the internal condensate tray and check for algae or sludge.
• Step 3 – Inspect secondary float:
  • Locate the secondary float switch assembly and verify free movement.
  • Replace the Secondary Float Switch if stuck or electrically faulty.

If P2 persists, the control board may be misreading the float inputs and require service.