Daikin Air Conditioner Error E5-00

⚡ Quick Answer: The Daikin Air Conditioner E5-00 error indicates a communication failure between the indoor and outdoor units, often caused by compressor overload pro... ⚠️ Difficulty Varies

What Does Error E5-00 Mean?

The Daikin Air Conditioner E5-00 error indicates a communication failure between the indoor and outdoor units, often caused by compressor overload protection activation. This leads to the compressor shutting down, resulting in no cooling or heating. Common causes include high-low pressure imbalances, closed service valves, or inverter/control PCB malfunctions. A blinking display typically accompanies this error, signaling the need for immediate attention.

Common Symptoms:

  • Compressor stops running and unit shuts down when E5-00 appears
  • E5-00 shows on remote or unit display when overload protection triggers
  • No cooling or heating despite normal power supply after error appears

Possible Causes

  • Compressor overcurrent/overload protection activation (medium)
  • High-low pressure imbalance during compressor start (medium)
  • Closed service valves or refrigerant flow obstruction (medium)
  • Inverter/control PCB malfunction affecting compressor control (medium)

How to Fix Error E5-00

DIY Fix Restart power and check basic conditions

  1. Turn off the air conditioner and disconnect power at the breaker or plug.
  2. Wait at least 1–2 minutes to allow internal protections to reset.
  3. Restore power and attempt to restart the unit.
  4. Observe if the E5‑00 code returns.

Technician Only Professional diagnostic and repair

  1. Inspect outdoor unit compressor current draw and compare with specifications.
  2. Check refrigerant pressures and service valve positions to ensure correct startup conditions.
  3. Test inverter/control PCB and related sensor/wiring for faults.
  4. Replace defective components (compressor, valves, PCB) as identified.

Parts needed: Compressor, Refrigerant service valves, Inverter/control PCB, Pressure sensors/thermistors

🛑 When to Call a Pro:
  • If E5‑00 persists after power restart.
  • If the unit frequently triggers overload or shows abnormal noises.
  • If there are signs of electrical faults (burnt smell, tripped breakers).

Technical Specifications

wattage N/A
component Control Board
resistance N/A
part_number DAIKIN PCB-123456
voltage_rating 220-240V AC

Common Questions

What does E5-00 error mean on Daikin Air Conditioner?

E5-00 indicates a communication failure due to compressor overload protection, causing the unit to stop.

Can I fix Daikin Air Conditioner E5-00 error myself?

Yes, you can restart the unit and check basic conditions, but persistent issues should be handled by a technician.

How much does it cost to fix E5-00 error?

Repair costs vary; minor parts may cost low hundreds USD, while compressor or PCB replacements can exceed a thousand USD.

When should I call a technician for E5-00?

Call a technician if E5-00 persists after a restart, if the unit frequently triggers overload, or shows signs of electrical faults.

Sources & References

Data last verified: 2026-07-07

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