Daikin Air Conditioner Error L5-00

⚡ Quick Answer: The Daikin air conditioner L5-00 error indicates a compressor overload protection issue, triggered by an overcurrent detected in the inverter. This re... ⚠️ Difficulty Varies

What Does Error L5-00 Mean?

The Daikin air conditioner L5-00 error indicates a compressor overload protection issue, triggered by an overcurrent detected in the inverter. This results in immediate unit shutdown, often accompanied by unusual humming sounds and insufficient heating or cooling performance. If the unit displays the L5 code, it signifies that the inverter or compressor has shut down to prevent damage due to excessive current draw, which may be caused by internal faults or connection issues.

Common Symptoms:

  • unit stops operation immediately with the L5 code displayed
  • insufficient cooling/heating performance due to shutdown
  • outdoor unit error indication

Possible Causes

  • Inverter (IPM/PCB) overcurrent protection triggered due to internal fault (medium)
  • Compressor fault leading to excessive current draw (medium)
  • Compressor harness or connection issues (medium)

How to Fix Error L5-00

DIY Fix Basic checks and power reset

  1. Turn off the unit using the remote and isolate power at breaker
  2. Wait at least 1 minute before restoring power
  3. Power on and monitor if L5 reoccurs

Technician Only System diagnostics and component inspection

  1. Power down and verify all power is disconnected
  2. Inspect outdoor unit inverter PCB/IPM for damage or failed power transistors
  3. Test compressor windings and insulation for shorts
  4. Verify compressor harness and connector integrity and replace if damaged
  5. Replace faulty inverter PCB or compressor as indicated by test results

Parts needed: inverter PCB/IPM module, compressor unit, harness/connectors

🛑 When to Call a Pro:
  • If L5 persists after basic reset
  • If you observe unusual noises from compressor or visible damage to outdoor unit
  • If you do not have tools/skills to safely test high voltage components

Technical Specifications

wattage 2000W
component Compressor
resistance 5-15 ohms
part_number DAIKIN 4E160001
voltage_rating 220V AC

Common Questions

What does L5-00 error mean on daikin air conditioner?

The L5-00 error indicates a compressor overload protection issue, causing immediate shutdown and insufficient performance.

Can I fix daikin air conditioner L5-00 error myself?

Yes, you can perform basic checks and a power reset to see if the error resolves.

How much does it cost to fix L5-00 error?

Repair costs can be high, especially if replacing the PCB or compressor is necessary.

When should I call a technician for L5-00?

Call a technician if the L5 code persists after a reset or if you notice unusual noises or visible damage.

Sources & References

Data last verified: 2026-07-07

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