Daikin Mini Split Error Code L8: How to Fix It

Medium 30 minutes to 1 hour Medium Severity Verified June 2026
Error Code
L8
Brand
Daikin
Product Type
mini_split
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30 minutes to 1 hour
Error code L8 on your Daikin mini split indicates that the compressor is drawing too much current (overcurrent). This can be caused by a faulty capacitor, a failing compressor, or low refrigerant. Most homeowners can check the capacitor and wiring, but professional help is often needed for refrigerant or compressor issues.
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Tools You'll Need

How to Fix Error Code L8

  1. Turn Off Power and Wait

    High voltage inside the unit. Always disconnect power before opening the access panels.
  2. Inspect the Run Capacitor

    Capacitors can hold a lethal charge. Use an insulated screwdriver to short the terminals across a high-wattage resistor (or wait 10 minutes) to discharge safely.
  3. Check Compressor Wiring and Terminals

    Do not touch terminals if unsure; risk of electric shock.
  4. Measure Compressor Winding Resistance

  5. Check for Refrigerant Issues

    Refrigerant handling requires certification. Do not attempt unless certified.

Parts You May Need

Compressor (if faulty)
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Compressor (if faulty)
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Compressor (if faulty)
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Compressor (if faulty)
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When to Call a Professional

If the capacitor tests good and wiring is intact, the compressor or refrigerant system is likely at fault. Professional HVAC technician is required to replace the compressor or handle refrigerant.

Frequently Asked Questions

What is the most common cause of Daikin error L8?
The most common cause is a faulty run capacitor. A bad capacitor can cause the compressor to draw excess current, triggering the L8 error. Replacing it is often a simple fix.
Can I reset a Daikin mini split error L8?
Yes, you can try resetting by turning off the unit at the breaker for 10-15 minutes, then turning it back on. If the error reappears, there is an underlying issue that needs repair.
Is it safe to run my Daikin AC with error L8?
No, running the unit with a compressor overcurrent can cause further damage to the compressor or electrical components. Turn off the system and troubleshoot or call a professional.
How much does it cost to fix error L8 on a Daikin mini split?
If it's just a capacitor replacement, expect $100-$200 including service call. If the compressor needs replacement, costs can range from $800 to $1,500 or more, depending on the unit.
What does 'compressor overcurrent' mean?
It means the compressor is drawing more electrical current than it should, which can cause overheating and damage. This is often due to a bad capacitor, wiring issues, or mechanical problems in the compressor.