Operation LED blinks 5 times, Timer LED blinks 3 times, and wired remote shows 53 — Drain pump error.

What does Operation 5 Times / Timer 3 Times / 53 mean?

The float switch in the drain pump system has been activated for more than 3 minutes, indicating a blockage or pump malfunction.

• The float switch is stuck or malfunctioning.
• Blockages or dust in the drain hose.
• Loose or damaged connector (CN9) or wire.

Click steps to track your progress.

1. 1

   Power off the indoor unit and check the drain hose for any visible blockages, kinks, or accumulation of dust/debris.

2. 2

   Carefully clear any obstructions found in the drain hose.

3. 3

   If accessible, check the float switch for free movement and ensure it is not stuck.

4. 4

   Reset power to the unit. If the error persists, professional service is needed to inspect the float switch or pump.