Fujitsu Mini Split Error Codes
Find a code
Featured codes
- 75.1 — Fujitsu's outdoor board shows these dot-decimal codes only after an error is active:
- 76.2 — Fujitsu's outdoor board shows these dot-decimal codes only after an error is active:
- 84.1 — Fujitsu's outdoor board shows these dot-decimal codes only after an error is active:
- 74.1 — Fujitsu's outdoor board shows these dot-decimal codes only after an error is active:
- H4 — H4 is not part of Fujitsu's documented fault-code set: the official Fujitsu Trouble S
- 71.1 — Fujitsu's outdoor board shows these dot-decimal codes only after an error is active:
Recently updated
Browse by fault family
Model families
Safe checks with an external tool or supply
These pages list the check you can do from outside the unit, with an optional external tool or maintenance supply. None of them repair an internal fault.
- 75.1 — SplitAtlas documents 75.1 on the AIRSTAGE H-series as "Suction gas temp sensor error" (Fujitsu AOUH18-45KWAS/K…
Related troubleshooting guides
Manufacturer manuals
1 codes
- Fujitsu 11.3 error code
Fujitsu SW1/MONITOR code 11.3 means a serial communication error at the outdoor unit - the indoor/controller-to-outdoor data path is not exchanging da… - Fujitsu 11.4 error code
SplitAtlas documents 11.4 on the AIRSTAGE H-series as "Serial communication error during operation" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, se… - Fujitsu 16.5 error code
SplitAtlas documents 16.5 on the AIRSTAGE H-series as "Communication error between controller and outdoor unit" (Fujitsu AOUH18-45KWAS/KWAH R-32 desig…
2 codes
- Fujitsu 22.1 error code
SplitAtlas documents 22.1 on the AIRSTAGE H-series as "Indoor unit capacity error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe… - Fujitsu 23.1 error code
SplitAtlas documents 23.1 on the AIRSTAGE H-series as "Connection prohibited (series error)" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3)…
6 codes
- Fujitsu 62.1 error code
Fujitsu SW1/MONITOR code 62.1 means the outdoor control board's PCB model information (memory/model data) failed the outdoor unit's internal check (AI… - Fujitsu 62.3 error code
SplitAtlas documents 62.3 on the AIRSTAGE H-series as "EEPROM access error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe breake… - Fujitsu 62.8 error code
SplitAtlas documents 62.8 on the AIRSTAGE H-series as "EEPROM data corruption error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One sa… - Fujitsu 63.1 error code
Fujitsu 63.1 (SW1 dot-decimal code, shown via the outdoor ERROR LED + MONITOR LEDs) means the outdoor inverter/IPM electronics did not pass the outdoo… - Fujitsu 65.3 error code
SplitAtlas documents 65.3 on the AIRSTAGE H-series as "IPM error (trip terminal L)" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One saf…
7 codes
- Fujitsu 71.1 error code
SplitAtlas documents 71.1 on the AIRSTAGE H-series as "Discharge temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One saf… - Fujitsu 72.1 error code
SplitAtlas documents 72.1 on the AIRSTAGE H-series as "Compressor temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One sa… - Fujitsu 73.2 error code
SplitAtlas documents 73.2 on the AIRSTAGE H-series as "Heat exchanger middle temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14… - Fujitsu 73.3 error code
SplitAtlas documents 73.3 on the AIRSTAGE H-series as "Heat exchanger liquid temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14… - Fujitsu 74.1 error code
SplitAtlas documents 74.1 on the AIRSTAGE H-series as "Outdoor temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe … - Fujitsu 75.1 error code
SplitAtlas documents 75.1 on the AIRSTAGE H-series as "Suction gas temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One s… - Fujitsu 76.2 error code
SplitAtlas documents 76.2 on the AIRSTAGE H-series as "Valve sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe breaker…
8 codes
- Fujitsu 84.1 error code
SplitAtlas documents 84.1 on the AIRSTAGE H-series as "Heat sink temp sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One saf… - Fujitsu 86.1 error code
SplitAtlas documents 86.1 on the AIRSTAGE H-series as "Current sensor 1 error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe bre… - Fujitsu 86.4 error code
SplitAtlas documents 86.4 on the AIRSTAGE H-series as "Discharge pressure sensor error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One…
9 codes
- Fujitsu 94.1 error code
SplitAtlas documents 94.1 on the AIRSTAGE H-series as "High pressure switch 1 error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One sa… - Fujitsu 95.1 error code
SplitAtlas documents 95.1 on the AIRSTAGE H-series as "Trip detection" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe breaker res… - Fujitsu 97.3 error code
SplitAtlas documents 97.3 on the AIRSTAGE H-series as "Compressor motor control error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One … - Fujitsu 98.3 error code
SplitAtlas documents 98.3 on the AIRSTAGE H-series as "Fan motor 1 error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe breaker … - Fujitsu 99.1 error code
SplitAtlas documents 99.1 on the AIRSTAGE H-series as "Fan motor 2 error" (Fujitsu AOUH18-45KWAS/KWAH R-32 design manual, sec 14-3). One safe breaker …
H codes
- Fujitsu H4 error code
H4 is not a documented fault code in Fujitsu's official Halcyon/AIRSTAGE error-code tables - genuine Fujitsu ductless systems use two-digit numeric co…