Error 4250 (Detail 102) – ACCT overcurrent detected

What does 4250 (D102) mean?

An overcurrent of 34.5Apeak or 16Arms or above is detected by the ACCT sensor. This indicates a significant electrical overload, potentially from incorrect wiring, fan issues, compressor failure, or a fault with the INV board.

• Improper inverter output wiring connection
• Compressor failure (earth fault, short circuit)
• Broken or damaged fan wiring, or incorrect wiring polarity
• INV (Inverter) board failure

Click steps to track your progress.

1. 1

   Check the inverter output wiring for proper and secure connections, ensuring correct polarity.

2. 2

   Inspect the fan wiring for any breakage, damage, or incorrect polarity.

3. 3

   Check the compressor for any earth faults or short circuits using appropriate testing equipment.

4. 4

   If no external wiring or compressor issues are found, the INV board may need replacement.

5. 5

   Contact a qualified technician for further diagnosis as internal inverter components are complex.