| Error Codes | Led Status |
|---|---|
| E0 | EEPROM parameter error |
| E1 | Indoor / outdoor units communication protection |
| E2 | Zero-crossing signal error |
| E3 | Fan speed out of control |
| E5 | Open or short circuit of outdoor temperature sensor (T4) |
| E6 | Open or short circuit of room (T1) or evaporator temperature sensor (T2) |
| P0 | Outdoor PCB protection |
| P1 | Over voltage or too low voltage protection |
| P2 | Temperature protection of compressor top. |
| P4 | Inverter compressor drive error |
Note: E4 & P3: Reserved function
Diagnosis and Solution
E0 (EEPROM parameter error) error diagnosis and solution
Circuit or software error on indoor PCB ⇒ Replace indoor PCB
E1 (indoor / outdoor units communication protection) error diagnosis and solution
E2 (zero-crossing signal error) diagnosis and solution
E3 (indoor fan speed out of control) diagnosis and solution
Troubleshooting
*Unit does not star:
- Power cut. Wait for power to be restored.
- Unit may have become unplugged. Check that plug is securely in wall receptacle.
- Fuse may have blown. Replace the fuse.
- Battery in Remote controller may have been exhausted. Replace the battery.
- The time you have set with timer is incorrect. Wait or cancel timer setting.
*Unit not cooling or heating (Cooling/ heating models only) room very well while air flowing out from the air condtioner:
- Inappropriate temperature setting. Set temperature correctly.
- Air filter is blocked. Clean the air filter.
- Doors or Windows are open. Close the doors or windows.
- Air inlet or outlet of indoor or outdoor unit has been blocked. Clear obstructions away first, then restart the unit.
- Compressor 3 minutes protection has been activated. Wait.
If the trouble has not been corrected, please contact a local dealer or the nearest customer service center. Be sure to inform them of the detailed malfunctions and unit model.
Derby Air Conditioner Manual PDF-1
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