ErrorCodeDoctor
Daikin Air Conditioner JC error code
The JC error means your Daikin air conditioner detected a fault with the low pressure sensor. Note that this can sometimes be caused by the high pressure sensor being accidentally connected in place of the low pressure sensor. Contact a qualified technician to inspect and replace the sensor.
Common causes
- Defective connector contact
- High pressure sensor connected in place of low pressure sensor by mistake
- Defective low pressure sensor
- Defective outdoor unit PCB
How to fix it
-
1
Contact a qualified technician to inspect the low and high pressure sensor connections and replace if needed
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
JC error — frequently asked questions
What does the JC error mean on a Daikin air conditioner?
The low pressure sensor has a fault
What causes the JC error?
The JC error is usually caused by: Defective connector contact; High pressure sensor connected in place of low pressure sensor by mistake; Defective low pressure sensor; Defective outdoor unit PCB.
Can I fix the JC 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 JC error?
Fixing the JC error on a Daikin air conditioner typically costs $80–$250, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the JC error?
We'd recommend addressing the JC error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.