Having scrutinized Fujitsu air conditioner error codes on a display, each user can remove small hitches without the help of specialists. However, one needs a table with decoding of such error codes here. We show it below.
Fujitsu ASU9R2 air conditioner error codes
| Kind of error | Indication on LED | Indication on wired remote control | Contents | ||
|---|---|---|---|---|---|
| Operation (red) | Timer (green) | 7 seg. | |||
| Communication | Off | 0.5 sec / twice | 2 | 1 | Serial (reverse) error after operation |
| 0.5 sec / three times | 3 | Serial (reverse) error during operation | |||
| 0.5 sec / four times | 4 | Serial (forward) error after operation | |||
| 0.5 sec / five times | 5 | Serial (forward) error during operation | |||
| Indoor unit Thermistor | 0.5 sec/twice | 0.5 sec / twice | 22 | 2 | Room temp, thermistor error open / short |
| 0.5 sec / three times | 23 | 4 | Heat exchange (middle) thermistor error open / short | ||
| Outdoor unit Thermistor | 0.5 sec/three times | 0.5 sec / three times | 33 | 6 | Heat exchange thermistor error open |
| 0.5 sec / four times | 34 | 0A | Outdoor temp, thermistor error open / short | ||
| Indoor unit PCB | 0.5 sec /four times | 0.5 sec / eight times | 48 | 21 | Opposite VDD permanent stop protection (Electric aircleaner, circuit error) |
| Outdoor unit PCB | 0.5 sec/five times | 0.5 sec / six times | 56 | 1b | Outdoor unit fan control error |
| Indoor unit fan motor | 0.5 sec / six times | 0.5 sec / twice | 62 | 12 | Lock |
| 0.5 sec / three times | 63 | r.p.m abnormal | |||
| Power supply | 0.1 sec flashing on red and orange LED | AA | No Indication | Power supply abnormal | |
| Model distinction | 0.1 sec flashing on all LED | Ab | 11 | Model distinction error |
Fujitsu Wall Mounted Type air conditioner error codes
| Error display | Wired remote controller Error code | Mode | DESCRIPTION | Remark | |
|---|---|---|---|---|---|
| OPERATION lamp (green) | TIMER Lamp (orange) | ||||
| 1 | 1 | 11 | Communication | Serial communication error | •When the indoor unit cannot receive the signal from the branch unit •Wien the branch unit cannot receive the skinal from the indoor unit |
| 1 | 2 | 12 | Communication | Remote controller communication error | •Wired remote controller communication error |
| 1 | 5 | 15 | Communication | Scan error | •Check operation incompletion error (normally, operation disabled) |
| 2 | 1 | 21 | Function setting | Initial setting error | •Wiring mistake |
| 2 | 2 | 22 | Function setting | Indoor unit capacity error | •Indoor unit capacity error |
| 2 | 3 | 23 | Function setting | Connection disabled (series error) | •Combination error |
| 2 | 4 | 24 | Function setting | Connection unit number error | •Connection unit number error (indoor unit) •Connection unit number error (branch unit) |
| 3 | 2 | 32 | Indoor unit | Indoor unit main PCB error | •Indoor unit PCB Model information error |
| 3 | 5 | 35 | Indoor unit | Manual auto switch error | •Manual auto switch error |
| 4 | 1 | 41 | Indoor unit | Room error | •Inlet thermistor error |
| 4 | 2 | 42 | Indoor unit | Indoor unit Heat Ex. sensor error | •Indoor unit Heat Ex. Middle thermistor error |
| 5 | 1 | 51 | Indoor unit | Indoor unit fan motor error | •Main fan motor lock error •Main fan motor revolution speed error |
| 5 | 3 | 53 | Indoor unit | Water Drain error | •Drain pump error |
| 5 | 15 | 5U | Indoor unit | Indoor unit error | •Indoor unit error |
| 6 | 2 | 62 | Outdoor unit | Outdoor unit main PCB error | •Outdoor unit PCB Model information error •Outdoor unit PCB microcomputer communication error |
| 6 | 3 | 63 | Outdoor unit | Inverter PCB error | •Inverter error |
| 6 | 4 | 64 | Outdoor unit | Active filter error, PFC circuit error | •Voltage error stoppage permanently •Voltage error (can restore) •Over current protected operation stoppage permanently •PFC hardware error |
| 6 | 5 | 65 | Outdoor unit | IPM error | •Trip terminal L error |
| 6 | 10 | 6A | Outdoor unit | Display panel error | •Microcomputers communication error |
| 7 | 1 | 71 | Outdoor unit | Discharge thermistor error | •Discharge thermistor 1 error |
| 7 | 2 | 72 | Outdoor unit | Compressor thermistor error | •Compressor thermistor 1 error |
| 7 | 3 | 73 | Outdoor unit | Outdoor unit Heat Ex. Sensor error | •Outdoor unit Heat Ex. liquid thermistor error |
| 7 | 4 | 74 | Outdoor unit | Outdoor thermistor error | •Outdoor thermistor error |
| 7 | 5 | 75 | Outdoor unit | Suction Gas thermistor error | •Suction Gas thermistor error |
| 7 | 7 | 77 | Outdoor unit | Heat sink thermistor error | •Heat sink thermistor error |
| 8 | 2 | 82 | Outdoor unit | Sub-cool Heat Ex. gas thermistor error | •Sub-cool Heat Ex. gas inlet thermistor error •Sub-cool Heat Ex. gas outlet thermistor error |
| 8 | 3 | 83 | Outdoor unit | Liquid pipe thermistor error | •Liquid pipe thermistor 1 error |
| 8 | 4 | 84 | Outdoor unit | Current sensor error | •Current sensor 1 error (stoppage permanently) |
| 8 | 6 | 86 | Outdoor unit | Pressure sensor error | •Discharge pressure sensor error •Suction pressure sensor error •High pressure switch 1 error |
| 8 | 4 | 94 | Outdoor unit | Trip detection | •Trip detection |
| 9 | 5 | 95 | Outdoor unit | compressor motor control error | •Rotor position detection error (stoppage permanently) |
| 9 | 7 | 97 | Outdoor unit | Outdoor unit fan motor 1 error | •Duty error |
| 9 | 9 | 99 | Outdoor unit | 4-way valve error | •4-way valve error |
| 10 | 1 | A1 | Refrigerant system | Discharge temperature 1 error | •Discharge temperature 1 error |
| 10 | 3 | A3 | Refrigerant system | Compressor temperature error | •Compressor 1 temperature error |
| 10 | 5 | A5 | Refrigerant system | Pressure error 2 | •Low pressure error |