Daikin Error Code F6: Refrigerant Overcharge
Warning: Your Daikin HVAC system has detected a refrigerant overcharge, which could cause damage. Turn off the system and call a professional.
How to Fix Daikin Code F6
- Step 1: Turn off your Daikin HVAC system at the thermostat and the circuit breaker to prevent further operation.
- Step 2: Do not attempt to open the unit or handle the refrigerant lines yourself, as this can be dangerous.
- Step 3: Contact a Daikin-authorized HVAC technician to diagnose and repair the issue.
How to Reset Daikin Code F6
- 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 F6 mean?
The Daikin F6 error code indicates that your HVAC system has too much refrigerant, a condition known as overcharging. This can lead to reduced system efficiency, increased wear and tear on components, and even damage to your unit. It's important to address this issue promptly to prevent further problems.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Refrigerant manifold gauge set | — | — |
| Refrigerant recovery machine | — | — |
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 |
| E1 | Outdoor PCB Defective | Warning |
| E3 | High Pressure Switch Activated | Warning |
| E4 | Low Pressure Switch Activated | Warning |
| E5 | Compressor Motor Lock | Warning |