U5 - 3 red flashes, 6 green flashes — Inverter heat sink temperature too high (TH8)

¿Qué significa U5 ?

This error means the inverter's heat sink temperature (TH8) is too high. This is usually due to insufficient airflow or a faulty thermistor.

• Lack of airflow around the heat sink
• Inverter fan not working
• Missing or degraded thermal paste
• Faulty TH8 thermistor

Haga clic en los pasos para seguir su progreso.

1. 1

   Ensure there is adequate airflow around the inverter heat sink.

2. 2

   Check that the inverter fan is operating correctly.

3. 3

   Verify the TH8 thermistor is correctly installed and connected.

4. 4

   Read the temperature from the service tool to confirm TH8 reading.