H21 — Drainage blocked or float sensor defective

Was bedeutet H21 ?

The condensate drainage system is blocked, or the float sensor is not working correctly. This prevents water from draining, potentially causing overflow.

• The drain pipe is clogged.
• The drain pan is full.
• The float sensor is malfunctioning or stuck.
• Condensate pump failure (if applicable).

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check and clear any blockages in the condensate drain pipe.

2. 2

   Ensure the drain pan is not overflowing.

3. 3

   Inspect the float sensor for proper movement and function.

4. 4

   If a pump is present, verify its operation.

5. 5

   Turn off the unit, unplug it, wait 30 seconds, and plug it back in to reset.