ErrorCodeDoctor
Daikin Air Conditioner EA error code
The EA error means your Daikin air conditioner detected a fault with the four-way valve — the component that switches the refrigerant flow direction to change between cooling and heating modes. This can be caused by a defective four-way valve, a shortage of refrigerant gas, a defective outdoor unit PCB, or a defective thermistor. Contact a qualified technician.
Common causes
- Defective four-way valve
- Shortage of refrigerant gas
- Defective outdoor unit PCB
- Defective thermistor
How to fix it
-
1
Contact a qualified technician to inspect the four-way valve and refrigerant system
Related Daikin Air Conditioner error codes
A0
An external protection device connected to the indoor unit has been activated
A1
A fault was detected in the indoor unit PCB (control board)
A3
The drain level control system has detected an abnormality — drain may be clogged
A5
Freeze-up protection (cooling) or high pressure control (heating) has activated — check the air filter
EA error — frequently asked questions
What does the EA error mean on a Daikin air conditioner?
The four-way valve or cool/heat switching system has a fault
What causes the EA error?
The EA error is usually caused by: Defective four-way valve; Shortage of refrigerant gas; Defective outdoor unit PCB; Defective thermistor.
Can I fix the EA error myself?
This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.
How much does it cost to fix the EA error?
Fixing the EA error on a Daikin air conditioner typically costs $150–$500, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the EA error?
We'd recommend addressing the EA error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.