Fujitsu Mini-Split: 9 Flashes
A Fujitsu mini-split LED pattern starting with 9 flashes matches 5 documented codes: 94, 95, 97, 98, 99. Watch the full pattern (short vs. long flashes) to tell them apart — all 5 are explained below.
Code 94: Over current error
Over current error (trip detection). The compressor tripped on overcurrent immediately after starting, ten times consecutively, so the unit shut down.
Manual wording: “Over Current Error - Protection stop by overcurrent generation after inverter compressor start processing completed generated consecutively 10 times.”
Documented for: RL2, RLS2, RLS3, RLB/RLXB, RLF, RLF1, RGLX, RLE, LUAS1, LMAS, LZBS, LZAS, LPAS series
Likely causes, most common first
- Clogged outdoor heat exchanger restricting airflow
- Defective condenser fan motor
- Discharged air being pulled back into the outdoor unit (short cycling of air)
- Compressor or inverter fault
What you can safely check yourself
- Check the outdoor coil for heavy dirt, cottonwood, grass clippings, or leaves and clear away anything blocking it
- Make sure the outdoor unit has clearance on all sides and its discharge air is not blowing into a wall or fence and back into the coil
- Turn the power off at the disconnect for about 5 minutes, then restore power
When to call a technician
If airflow is clear and the code returns, the condenser fan motor or the compressor circuit has to be tested by a licensed technician.
A Fujitsu mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- 410A Mini-Split Troubleshooting Guide (Part # 6-26-FG2020 Rev. 5/2019) (Fujitsu General America, Inc., All R410A Halcyon mini-splits: RGLX, RL2/RLS3/RLS3H/RLS3Y/RLB/RLXB/RLXEH wall mounted, RLF/RLF1 multi-zone indoor units, RLXFZ multi-zone outdoor units, RML/RMLQ, RULX/RSLX universal-mount, RCLX cassettes) · checked 2026-08-25
- Over Current Error (Trip Detection) - Fujitsu General Help Center (Fujitsu General America, Inc., RL2, RLS3, RLS2, RLB/RLXB, RLF, RLF1, LUAS1, LMAS, LZBS, LZAS, LPAS, RGLX, RLE series) · checked 2026-08-25
Code 95: Compressor motor control error
Compressor motor control error (rotor position detection error). The control cannot keep track of the compressor rotor position, so the compressor stops; if it repeats within 40 seconds of restart it stops again and can go to a permanent stop.
Manual wording: “Compressor Motor Control Error - If the detected rotor location is out of phase with actual rotor location more than 90 degrees, the compressor stops.”
Documented for: RL2, RLS2, RLS3, RLB/RLXB, RLF, RLF1, RGLX, RLE, LUAS1, LMAS, LZBS, LZAS, LPAS series
Likely causes, most common first
- Connector removed or loose on the compressor leads
- Erroneous connection at the compressor terminals
- Open compressor lead cable
- Failed compressor or inverter board
What you can safely check yourself
- Turn the power off at the outdoor disconnect and breaker for about 5 minutes, then restore power
When to call a technician
This is a compressor-drive fault. Compressor terminal and winding checks are high-voltage work for a licensed technician only.
A Fujitsu mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- 410A Mini-Split Troubleshooting Guide (Part # 6-26-FG2020 Rev. 5/2019) (Fujitsu General America, Inc., All R410A Halcyon mini-splits: RGLX, RL2/RLS3/RLS3H/RLS3Y/RLB/RLXB/RLXEH wall mounted, RLF/RLF1 multi-zone indoor units, RLXFZ multi-zone outdoor units, RML/RMLQ, RULX/RSLX universal-mount, RCLX cassettes) · checked 2026-08-25
- Compressor Control / Compressor Location Error - Fujitsu General Help Center (Fujitsu General America, Inc., RL2, RLS3, RLS2, RLB/RLXB, RLF, RLF1, LUAS1, LMAS, LZBS, LZAS, LPAS, RGLX, RLE series) · checked 2026-08-25
Code 97: Outdoor unit fan motor error
Outdoor unit fan motor error. The outdoor fan turned slower than 100 RPM within 20 seconds of starting; after three repeats inside 60 seconds the compressor and fan both stop.
Manual wording: “Outdoor Unit Fan Motor Error - When outdoor fan motor rotation speed is less than 100 RPMs in 20 seconds after fan motor starts, fan motor stops.”
Documented for: RL2, RLS2, RLS3, RLB/RLXB, RLF, RLF1, RGLX, RLE, LUAS1, LMAS, LZBS, LZAS, LPAS series
Likely causes, most common first
- Outdoor fan blade obstructed, iced, or the motor is locked
- Excessive ambient temperature around the fan motor from nearby heat-producing equipment
- Outdoor fan motor windings out of specification, or missing DC supply to the motor
- Failed outdoor main PCB
What you can safely check yourself
- With the power off at the disconnect, look for leaves, ice, or debris jamming the outdoor fan blade
- Clear snow and ice buildup from around and on top of the outdoor unit
- Turn the power off at the disconnect for about 5 minutes, then restore power
When to call a technician
Fujitsu's next steps are ohming the fan motor windings and checking DC voltage to the motor. That means a licensed technician.
A Fujitsu mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- 410A Mini-Split Troubleshooting Guide (Part # 6-26-FG2020 Rev. 5/2019) (Fujitsu General America, Inc., All R410A Halcyon mini-splits: RGLX, RL2/RLS3/RLS3H/RLS3Y/RLB/RLXB/RLXEH wall mounted, RLF/RLF1 multi-zone indoor units, RLXFZ multi-zone outdoor units, RML/RMLQ, RULX/RSLX universal-mount, RCLX cassettes) · checked 2026-08-25
- Outdoor Fan Motor Error - Fujitsu General Help Center (Fujitsu General America, Inc., RL2, RLS3, RLS2, RLB/RLXB, RLF, RLF1, LUAS1, LMAS, LZBS, LZAS, LPAS, RGLX, RLE series) · checked 2026-08-25
Code 98: Outdoor unit fan motor 2 error, on twin-fan condensers
Outdoor unit fan motor 2 error, on twin-fan condensers. The second outdoor fan turned slower than 100 RPM within 20 seconds of starting; repeated five times in a row, the compressor and fan stop permanently.
Manual wording: “Outdoor Unit Fan Motor 2 Error - When the outdoor fan rotation speed is less than 100 RPMs in 20 seconds after the fan motor starts, the fan will stop... If above repeats 5 times in a row, compressor and fan stop permanently.”
Documented for: Twin-fan outdoor units: larger RGLX, RLXB and RLXFZ condensers
Likely causes, most common first
- Second outdoor fan blade obstructed, iced, or the motor is locked
- Excessive ambient temperature around the fan motor
- Fan motor windings out of specification, or missing DC voltage to the motor
- Failed outdoor main PCB
What you can safely check yourself
- With the power off at the disconnect, look for debris or ice jamming either outdoor fan blade
- Turn the power off at the disconnect for about 5 minutes, then restore power
When to call a technician
After the permanent stop this needs a technician to test the motor and reset the system.
A Fujitsu mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Source
- 410A Mini-Split Troubleshooting Guide (Part # 6-26-FG2020 Rev. 5/2019) (Fujitsu General America, Inc., All R410A Halcyon mini-splits: RGLX, RL2/RLS3/RLS3H/RLS3Y/RLB/RLXB/RLXEH wall mounted, RLF/RLF1 multi-zone indoor units, RLXFZ multi-zone outdoor units, RML/RMLQ, RULX/RSLX universal-mount, RCLX cassettes) · checked 2026-08-25
Code 99: 4-way
4-way (reversing) valve error. The control compared indoor coil temperature to room temperature and twice found the system running backwards for the selected mode, so the compressor stopped.
Manual wording: “4-Way Valve Error - When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops.”
Documented for: RL2, RLS2, RLS3, RLB/RLXB, RLF, RLF1, RGLX, RLE, LUAS1, LMAS, LZBS, LZAS, LPAS series
Likely causes, most common first
- 4-way valve stuck or not shifting
- Failed 4-way valve solenoid coil, or no voltage to the coil
- Loose molex plug at the valve coil
- Thermistor reading wrong (indoor coil or room sensor)
What you can safely check yourself
- Note which mode the system was in when it failed - Fujitsu uses that to separate a valve fault from a control fault
- Turn the power off at the disconnect for about 5 minutes and back on, then run the system and see whether it heats or cools correctly
When to call a technician
Testing the reversing valve, its solenoid coil, and the coil voltage is refrigeration and line-voltage work for a licensed technician.
A Fujitsu mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- 410A Mini-Split Troubleshooting Guide (Part # 6-26-FG2020 Rev. 5/2019) (Fujitsu General America, Inc., All R410A Halcyon mini-splits: RGLX, RL2/RLS3/RLS3H/RLS3Y/RLB/RLXB/RLXEH wall mounted, RLF/RLF1 multi-zone indoor units, RLXFZ multi-zone outdoor units, RML/RMLQ, RULX/RSLX universal-mount, RCLX cassettes) · checked 2026-08-25
- 4-Way Valve Error - Fujitsu General Help Center (Fujitsu General America, Inc., RL2, RLS3, RLS2, RLB/RLXB, RLF, RLF1, LUAS1, LMAS, LZBS, LZAS, LPAS, RGLX, RLE series) · checked 2026-08-25