E153 — Float switch error (2nd detection)

What does E153 mean?

The float switch has detected a high water level in the drain pan, indicating a potential blockage or issue with the drainage system.

• Indoor unit Float Switch Open/Short circuit
• Drain pump malfunction or failure
• Clogged or blocked condensate drain line

Click steps to track your progress.

1. 1

   Check the indoor unit's drain pan and drain line for any visible clogs or standing water.

2. 2

   Ensure the condensate drain pump (if present) is operating correctly and not noisy.

3. 3

   Power off the indoor unit at the circuit breaker for 30 seconds, then power it back on.