Mitsubishi Mini-Split Error Code F6: How to Fix It

Q: What does error code F6 mean on a Mitsubishi mini-split?

Error F6 means inverter over current, indicating excessive current draw in the inverter module. This is often due to a shorted fan motor, compressor fault, or inverter board failure.

Q: Can I fix Mitsubishi error F6 myself?

Yes, if you have basic electrical knowledge and tools. Start by powering off, inspect for visible damage, test fan motor and compressor windings. Replace faulty parts. If unsure, call a professional.

Q: How much does it cost to fix a Mitsubishi inverter over current error?

Costs vary: DIY replacement of fan motor ($50-$150) or inverter board ($200-$500). Professional service including diagnosis and labor can range from $200-$800.

Q: Will resetting the mini-split clear error F6?

You can try: turn off the breaker for 30 minutes, then turn back on. If the fault is intermittent, it may temporarily clear. If the underlying issue remains, the error will return.

Q: Is a blown fuse on the inverter board a common cause of F6?

Yes, a blown fuse or failed IGBT on the inverter board can cause over current detection. Check for visible damage and test fuses with a multimeter.

Abstract

Error code F6 on your Mitsubishi mini-split indicates an inverter over current fault. This means the inverter's power module has detected excessive current flow, often due to a short circuit, failing fan motor, or a faulty compressor. Follow the steps below to diagnose and resolve the issue safely.