Aermec Error Codes
Every Aermec error code we have catalogued, with what it means on site — 18 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.
18 codes
| Code | What it means |
|---|---|
| E2 | Anti-freeze protection |
| E4 | Compressor high-temp protection |
| E5 | Overcharging protection |
| E6 | Communication error |
| F0 | Low refrigerant gas |
| F1 | Internal air temp sensor malfunction |
| F2 | Evaporator sensor malfunction |
| F3 | External environment temp sensor malfunction |
| F4 | External compressor temp sensor malfunction |
| F5 | Discharge sensor malfunction |
| H3 | Compressor overload / dirty coils |
| H4 | System fault (fuse/breaker/PCB) |
| H5 | IPM module high-temp protection |
| HC | PFC protection |
| L9 | Power supply protection |
| PH | DC bus-bar voltage too high |
| PL | DC bus-bar voltage too low |
| U7 | 4-way valve failure |
Official Aermec source / manual ↗
Look up any error code — offline — in R-Pro.
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