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
- Turn off the air conditioner and disconnect power at the breaker or plug.
- Wait at least 1–2 minutes to allow internal protections to reset.
- Restore power and attempt to restart the unit.
- Observe if the E5‑00 code returns.
Technician Only Professional diagnostic and repair
- Inspect outdoor unit compressor current draw and compare with specifications.
- Check refrigerant pressures and service valve positions to ensure correct startup conditions.
- Test inverter/control PCB and related sensor/wiring for faults.
- Replace defective components (compressor, valves, PCB) as identified.
Parts needed: Compressor, Refrigerant service valves, Inverter/control PCB, Pressure sensors/thermistors
- 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).
Next step
Choose the next step for E5-00
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Compressor
Compresses refrigerant within the sealed cooling system and requires specialized service equipment.
- Typical part-only price
- $180 - $600
- DIY difficulty
- Hard
- Estimated time
- 120-240 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
HVAC Control Board
Controls fan, compressor, sensor, and communication functions in the HVAC unit.
Thermistor
Measures precise temperature changes and sends resistance feedback to the control board.
Model-compatible Air Conditioner parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Air Conditioner Fin Cleaner
For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.
Model-Compatible Washable AC Filter
A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.
Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
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: 2026-07-31
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