Denko Error Codes
Every Denko error code we have catalogued, with what it means on site — 15 codes in total. In R-Pro, tap any code to get the meaning, likely causes and inspection steps, even with no signal in the plant room.
Common Denko codes
- E1 — EEPROM / indoor PCB parameter error
- E2 — Zero-crossing signal detection error
- E3 — Indoor fan speed out of control
- E4 — Indoor room temp sensor error
- E5 — Evaporator coil temp sensor error
- E6 — Indoor/outdoor communication error
- EC — Refrigerant leakage detection
- F1 — Outdoor ambient sensor error
| Code | What it means |
|---|---|
| E1 | EEPROM / indoor PCB parameter error |
| E2 | Zero-crossing signal detection error |
| E3 | Indoor fan speed out of control |
| E4 | Indoor room temp sensor error |
| E5 | Evaporator coil temp sensor error |
| E6 | Indoor/outdoor communication error |
| EC | Refrigerant leakage detection |
| F1 | Outdoor ambient sensor error |
| F2 | Condenser coil sensor error |
| F3 | Compressor discharge sensor error |
| F4 | Outdoor EEPROM parameter error |
| P0 | IPM malfunction / overcurrent protection |
| P1 | Over/under voltage protection |
| P2 | Compressor high temperature protection |
| P4 | Inverter compressor drive error |
Official Denko source / manual ↗
Frequently asked
What does Denko error code E1 mean?
Denko error code E1 means: EEPROM / indoor PCB parameter error. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code E2 mean?
Denko error code E2 means: Zero-crossing signal detection error. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code E3 mean?
Denko error code E3 means: Indoor fan speed out of control. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code E4 mean?
Denko error code E4 means: Indoor room temp sensor error. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code E5 mean?
Denko error code E5 means: Evaporator coil temp sensor error. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code E6 mean?
Denko error code E6 means: Indoor/outdoor communication error. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code EC mean?
Denko error code EC means: Refrigerant leakage detection. In R-Pro you also get the likely causes and the inspection steps — offline.
What does Denko error code F1 mean?
Denko error code F1 means: Outdoor ambient sensor error. In R-Pro you also get the likely causes and the inspection steps — offline.
Look up any error code — offline — in R-Pro.
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