Daikin Mini Split Error Code L5: How to Fix It

Q: Can I reset error code L5 on my Daikin mini split?

Yes, often a simple power cycle can clear temporary overcurrent events: turn off the unit at the breaker for 5 minutes, then turn back on. If L5 returns immediately or frequently, there is an underlying issue.

Q: Is a faulty capacitor a common cause for L5?

Yes, run capacitors degrade over time and can cause high current draw. Replacing a weak capacitor is one of the easiest fixes for L5.

Q: What does L5 error code mean on Daikin?

L5 indicates the inverter compressor stopped due to overcurrent. This means the compressor is drawing too much amperage, often from a capacitor, refrigerant, or compressor fault.

Q: Can low refrigerant cause L5?

Yes, low refrigerant can cause the compressor to overwork and draw excess current, triggering L5. Refrigerant issues should be diagnosed with gauges by a certified technician.

Q: How much does it cost to fix Daikin L5 error?

Cost varies: capacitor replacement is about $50-$150 (part and labor). Inverter board or compressor replacement can cost $500-$1500. Do-it-yourself repair reduces labor costs.

Abstract

Error code L5 on your Daikin mini split indicates the inverter compressor has stopped due to overcurrent. This usually means the compressor is drawing too much current, possibly from a faulty capacitor, restricted refrigerant, or a failing compressor itself. Here’s how to diagnose and fix the issue safely.