Daikin Error Code E1: Outdoor PCB Defective
Warning: Your Daikin HVAC system has detected a fault with the outdoor PCB. It's safe to operate, but you should schedule a professional repair soon.
How to Fix Daikin Code E1
- Turn off your HVAC system at the thermostat and the circuit breaker to prevent further damage
- Contact a Daikin professional technician to schedule a repair
- Do not attempt to open the outdoor unit or perform any repairs yourself
How to Reset Daikin Code E1
- Turn off the unit using the remote control or wall controller.
- Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
- Restore power at the breaker.
- Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.
What does E1 mean?
The Daikin E1 error code indicates a defect in the outdoor PCB (Printed Circuit Board). This board controls various functions of your outdoor unit, including the compressor and fan. When it malfunctions, your system may not operate efficiently, or it might shut down entirely. It's important to address this issue promptly to prevent further damage or system failure.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Outdoor PCB | 40122C0020 | — |
| Outdoor Fan Motor | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| A1 | Indoor PCB Defective | Warning |
| A3 | Drain Level System Fault | Warning |
| A5 | Freeze-Up/Overheat Protection | Warning |
| A6 | Fan Motor Lock/Overcurrent | Warning |
| C4 | Heat Exchanger Thermistor Fault | Warning |
| C9 | Suction Air Thermistor Fault | Warning |
| E3 | High Pressure Switch Activated | Warning |
| E4 | Low Pressure Switch Activated | Warning |
| E5 | Compressor Motor Lock | Warning |
| E6 | Standard Compressor Motor | Warning |