Alarm 329 (or 439, 122) Overheated inverter — Inverter reached max working temperature (3 times in 2 hours)

What does Overheated inverter 329 mean?

This alarm signifies that the inverter has reached its maximum working temperature due to poor cooling, occurring 3 times within 2 hours or continuously for 1 hour.

• Incorrect connection in the inverter’s terminal block X1.
• Poor cooling of the inverter.
• Defective inverter.

Click steps to track your progress.

1. 1

   Check the indoor module/control module display for specific action instructions.

2. 2

   Ensure that the air flow to S2125 is not blocked by foreign objects, which can impede cooling.

3. 3

   Visually inspect the inverter area for dust, debris, or blockages that could hinder cooling.

4. 4

   If the alarm persists, contact a qualified technician to check the inverter connections and cooling system.