Fujitsu AOHG18LZAH Heat Pump Error Codes
AOHG18LZAH Error Code Reference
Section titled “AOHG18LZAH Error Code Reference”Fujitsu Halcyon 18000 BTU inverter heat pump outdoor unit with cold climate operation.
| Error Code | Fault Description |
|---|---|
| 03 | Indoor unit fan motor fault |
| 04 | Outdoor unit fan motor fault |
| 07 | High pressure protection fault |
| 08 | Low pressure / refrigerant shortage detected |
| 11 | Suction pipe temperature sensor (thermistor) fault |
| 20 | Communication error between indoor and outdoor unit |