Inv. err. 262 — Compressor is blocked: Power transistor too hot

What does 262 mean?

The Intelligent Power Module (IPM) has shown a fault output signal 5 times within 60 minutes, indicating the power transistor is too hot. This requires checking the 15V supply to the inverter.

• Incoming power supply interference
• Service valve closed
• Insufficient amount of refrigerant
• Compressor fault
• Defective inverter board in F2040/AMS

Click steps to track your progress.

1. 1

   Check the 15V supply to the inverter for stability.

2. 2

   Ensure the service valve is open.

3. 3

   Verify refrigerant levels.

4. 4

   Inspect for compressor or inverter board faults.

5. 5

   Contact a qualified technician.