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Daikin Air Conditioner Not Turning On

Daikin air conditioning systems are well-known for their exceptional performance and durability, yet even the best appliances can encounter issues. One particularly vexing problem that users may confront is the Daikin air conditioner refusing to turn on. In this extensive troubleshooting guide, we will delve into the myriad causes of this issue and provide detailed solutions to help you navigate through the intricacies of getting your Daikin AC up and running again.

Troubleshooting Steps

1. Power Supply Issues:

– Cause: Begin by checking the power supply. Is there a power outage or has the circuit breaker tripped?

– Solution: Restore power, reset the circuit breaker, and ensure the unit is securely plugged in.

2. Faulty Remote Control:

– Cause: Inspect the remote control for signs of dead batteries or physical damage.

– Solution: Replace batteries or acquire a new remote control if needed. Ensure it’s properly synced with the AC unit.

3. Thermostat Settings:

– Cause: Verify that the thermostat settings are correct, as incorrect settings can prevent the AC from turning on.

– Solution: Ensure the thermostat is set to the desired temperature and mode (cooling/heating). Check for any scheduling issues.

4. Air Filter Blockage:

– Cause: Clogged air filters can impede airflow and trigger a system shutdown.

– Solution: Make it a habit to clean or replace air filters regularly to maintain optimal performance and indoor air quality.

5. Condensate Drain Issues:

– Cause: A blocked condensate drain can activate a safety feature, preventing the unit from starting.

– Solution: Clear the condensate drain line to ensure proper drainage. Consider adding periodic maintenance to your routine.

6. Tripped Safety Switch:

– Cause: Some Daikin units have safety switches that can trip due to various reasons.

– Solution: Consult the user manual for instructions on resetting the safety switch. Follow the manufacturer’s guidelines precisely.

7. Refrigerant Issues:

– Cause: Low refrigerant levels or leaks can severely impact the system’s ability to operate.

– Solution: Given the technical nature of refrigerant-related problems, consult a professional technician for identification and resolution.

8. Faulty Capacitor or Compressor:

– Cause: Malfunctioning components like capacitors or compressors can lead to startup failures.

– Solution: Seek the expertise of a qualified HVAC technician for a thorough diagnosis and replacement of faulty parts.

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9. Electrical Problems:

– Cause: Wiring or electrical component issues can hinder the AC from turning on.

– Solution: Employ the services of a qualified electrician or technician to inspect and rectify any electrical problems. Safety should be a top priority.

If there’s a fault with the Daikin system, there will be fault codes sometimes shown on the remote control or wall-mounted controller. Or you may have to complete a sequence on the remote controller to get the code to appear, certainly, here’s an extended list of Daikin air conditioner fault codes.

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A to C

– A0: External Input Device Error

– A1: Malfunction of Indoor Unit PCB

– A3: Drain Level Control System

– A5: Freeze-up Prevention

– A6: Fan Motor Lock

– A7: Swing Flap Motor Lock

– A9: Electronic Expansion Valve Drive Error

– C1: Malfunction of Thermistor (Liquid Pipe)

– C2: Malfunction of Thermistor (Gas Pipe)

– C3: Malfunction of Thermistor (Room Temperature)

– C4: Malfunction of Thermistor (Suction Air Temperature)

– C5: Malfunction of Thermistor (Heat Exchanger Temperature)

– C9: Malfunction of Thermistor (Discharge Pipe Temperature)

D to H

– D3: Malfunction of Air Filter Dirty Detection

– E0: EEPROM Parameter Error

– E1: Circuit Board Malfunction

– E3: High-Pressure Control

– E4: Low-Pressure Control

– E5: Overheat Control

– E6: Faulty Compressor Start

– E7: Communication Malfunction

– F3: Outdoor Unit Thermistor Error

– F6: Refrigerant Overcharge Error

– F8: Inverter Overload

– H3: Malfunction of Outdoor Unit PCB

– H4: Faulty Compressor Motor

– H5: Faulty Outdoor Unit Fan Motor

J to M

– J3: Faulty Pressure Sensor

– J4: Faulty Outdoor Unit Thermistor

– J5: Faulty Inverter PCB

– J6: Faulty Compressor Sensor

– J7: Faulty Outdoor Unit Fan Motor

– J9: Faulty Heat Exchanger Temperature Sensor

– M1: Malfunction of Centralized Remote Controller

– M3: Malfunction of Remote Controller PCB

– M4: Faulty Remote Controller Display

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P to U

– P0: Faulty Indoor Unit Thermistor

– P1: Indoor Unit Capacity Insufficient

– P2: Malfunction of Indoor Unit Air Sensor

– P3: Faulty Indoor Unit Fan Motor

– P4: Faulty Indoor Unit Heat Exchanger Temperature Sensor

– P5: Faulty Outdoor Unit Fan Motor

– P6: Faulty Outdoor Unit Compressor Motor

– P7: Faulty Outdoor Unit Heat Exchanger Temperature Sensor

– P8: Faulty Outdoor Unit Thermistor

– U0: Low Refrigerant

– U1: System Power Insufficient

– U2: Reverse Phase Detection

– U4: Short or Open Circuit in Outdoor Unit

– U7: Communication Error

– U9: EEPROM Error

V to 99

– V1: Voltage Error

– V3: Inverter Voltage Drop

– V4: Inverter Current Drop

– V5: Inverter PCB Voltage Drop

– V6: Inverter PCB Current Drop

– V8: DC Voltage Drop

– V9: DC Current Drop

– 11: Inverter PCB Error

– 13: Drain Pump Error

– 14: Malfunction of Radiator Fan Motor

– 18: Malfunction of 2nd Gas Pipe Thermistor

– 19: Malfunction of 3rd Gas Pipe Thermistor

– 22: Malfunction of Air Intake Thermistor

– 25: Malfunction of Outdoor Unit Heat Exchanger Thermistor

– 26: Malfunction of 4th Gas Pipe Thermistor

– 33: Malfunction of Indoor Unit Heat Exchanger Thermistor

– 39: Malfunction of Inverter Radiator Thermistor

– 45: Malfunction of Humidity Sensor

– 48: Malfunction of Air Intake Temp Sensor

– 49: Malfunction of 2nd Suction Air Thermistor

– 50: Malfunction of 3rd Suction Air Thermistor

– 52: Malfunction of 4th Suction Air Thermistor

– 54: Malfunction of 5th Suction Air Thermistor

– 55: Malfunction of 6th Suction Air Thermistor

– 57: Malfunction of 7th Suction Air Thermistor

– 58: Malfunction of 8th Suction Air Thermistor

– 59: Malfunction of 9th Suction Air Thermistor

– 61: Malfunction of Air Intake Fan Motor

– 63: Malfunction of 2nd Liquid Pipe Thermistor

– 65: Malfunction of 3rd Liquid Pipe Thermistor

– 67: Malfunction of 4th Liquid Pipe Thermistor

– 69: Malfunction of 5th Liquid Pipe Thermistor

– 71: Malfunction of 6th Liquid Pipe Thermistor

– 73: Malfunction of 7th Liquid Pipe Thermistor

– 75: Malfunction of 8th Liquid Pipe Thermistor

– 77: Malfunction of 9th Liquid Pipe Thermistor

– 79: Malfunction of 10th Liquid Pipe Thermistor

– 80: Malfunction of Subcool Heat Exchanger Thermistor

– 82: Malfunction of 2nd Heat Exchanger Thermistor

– 84: Malfunction of 3rd Heat Exchanger Thermistor

– 86: Malfunction of 4th Heat Exchanger Thermistor

– 88: Malfunction of 5th Heat Exchanger Thermistor

– 90: Malfunction of 6th Heat Exchanger Thermistor

– 92: Malfunction of 7th Heat Exchanger Thermistor

– 94: Malfunction of 8th Heat Exchanger Thermistor

– 96: Malfunction of 9th Heat Exchanger Thermistor

– 98: Malfunction of 10th Heat Exchanger Thermistor 

Conclusion

In conclusion, addressing the Daikin air conditioning not turning on the issue requires a systematic approach. Regular maintenance, timely attention to emerging problems, and professional assistance when necessary are pivotal to ensuring your Daikin AC operates efficiently, providing the cool comfort you expect. Remember to consult the user manual for model-specific instructions and, when in doubt, reach out to Daikin’s customer support or authorized service providers like DGB Refrigeration for comprehensive assistance. By taking a proactive stance on troubleshooting, you can not only revive your AC but also enhance its longevity and overall performance.

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