E422 — Pipe Blocking Error

What does E422 mean?

This error suggests a blockage within the refrigerant piping system, which can severely impede the flow of refrigerant and prevent the unit from cooling or heating effectively.

• Obstruction within the refrigerant lines (e.g., debris, ice formation).
• Kinked or damaged refrigerant piping.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power switch or circuit breaker and wait 30 seconds.

2. 2

   Visually inspect the outdoor unit and any accessible refrigerant lines for signs of physical damage or kinks.

3. 3

   Ensure the outdoor unit is clean and has good airflow.

4. 4

   Turn the power back on. If the error persists, contact customer support for a professional inspection of the refrigerant system.