Fujitsu Error Code EF:00: Compressor Overcurrent
Warning: The system has shut down due to a compressor issue. It needs professional diagnosis and repair to prevent further damage.
How to Fix Fujitsu Code EF:00
- Check the outdoor unit for any obstructions like leaves, debris, or snow blocking airflow. Clear away anything restricting airflow around the unit.
- Ensure the indoor air filter is clean. A dirty air filter restricts airflow, which can indirectly affect the compressor's workload.
- Try resetting the system by turning off the power to the outdoor unit at the breaker for 5 minutes, then turning it back on. This might clear a temporary fault.
- If the problem persists after these steps, contact a qualified HVAC technician for diagnosis and repair.
How to Reset Fujitsu Code EF:00
- 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 EF:00 mean?
The EF:00 error code on your Fujitsu mini-split indicates the system detected an overcurrent condition in the compressor. Think of it like this: the compressor motor is drawing too much electricity. This can happen for a few reasons, but the system shuts down to protect the compressor from burning out. The compressor is the heart of your cooling system; it circulates the refrigerant that cools your home. If the compressor fails, you'll have no cooling until it's fixed. This code means the outdoor unit has likely locked out and needs to be reset after the fault is addressed.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Compressor | — | — |
| Compressor Contactor | — | — |
| Compressor Start Capacitor | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| E0:00 | Communication Error (Indoor to Remote) | Warning |
| E1:00 | Communication Error (Indoor to Outdoor) | Warning |
| E2:00 | Room Temp Sensor Open Circuit | Warning |
| E3:00 | Room Temp Sensor Short Circuit | Warning |
| E4:00 | Indoor Coil Sensor Open | Warning |
| E5:00 | Indoor Coil Sensor Short | Warning |
| E6:00 | Outdoor Coil Sensor Fault | Warning |
| E7:00 | Outdoor Ambient Sensor Fault | Warning |
| E8:00 | Indoor Fan Motor Fault | Warning |
| E9:00 | Drain Pump / Float Switch | Warning |