What causes Fujitsu Mini Split 97?

The outdoor fan can't turn freely: something is caught in the blades, the blade has come loose or dropped off the shaft, or the motor or its bearing has locked up. Too much heat around the fan motor, for example from nearby equipment that puts out heat, which trips the motor's protection. A failed outdoor unit fan motor. A failed outdoor unit main control board (or inverter board on some models) that isn't putting out the right voltage to the fan motor.

How do I fix Fujitsu Mini Split 97?

Note the light pattern: 9 Operation flashes, 7 Timer flashes and a continuously flashing Economy light means E:97. Turn the system off at the breaker or outdoor disconnect before going near the outdoor unit. With power off, look through the outdoor fan grille for anything jammed in the blades, such as sticks, leaves, ice or a nest, and clear what you can reach safely without taking the unit apart. Still with power off, gently turn the fan by hand, as Fujitsu's first check does. It should spin freely. If it's stuck, wobbles, scrapes or the blade is loose on the shaft, the fan or motor bearing needs a technician. Check for anything around the outdoor unit that puts heat on it, like a dryer vent or another condenser blowing at it. Fujitsu says to let the temperature come down and then restart. Restore power and run the system. If E:97 comes back, call the installer or a licensed HVAC technician.

When should I call a pro for Fujitsu Mini Split 97?

The fan won't turn freely by hand. Fujitsu says to replace the fan or bearing (motor) if either is abnormal. The fan turns freely but the code returns. The technician checks the outdoor fan motor per the model's service parts information; Fujitsu says a bad fan motor gets replaced together with the outdoor main PCB. The fan motor tests good. The technician measures the board's output at the fan connector (red to black is a high DC supply, about 280 V on the ASLH models and 262 to 390 V on others, and white to black about 15 V). If the voltage is wrong, Fujitsu says to replace the main PCB. The system is new or under warranty. Contact the installer or Fujitsu General America technical support (866-952-8324) first.

Code: 97🔧 Fujitsu Mini Split

Fujitsu Mini Split Error Code 97: Outdoor Fan Motor Error (Meaning, Causes, Fixes)

Q: What does Fujitsu Mini Split 97 mean?

Error 97 (E:97) on a Fujitsu (Halcyon, Airstage) mini split is an outdoor unit fan motor error: the fan in the outdoor unit didn't spin up to speed, so the system shut the fan and compressor down to protect itself. Fujitsu's service manuals point first to a fan that's blocked, loose or seized, then to too much heat around the motor, and finally to a failed outdoor fan motor or outdoor main control board. Fujitsu's service manuals list E:97 as "Outdoor unit fan motor error (Outdoor unit)", and the 410A mini-split troubleshooting guide calls it "Outdoor unit fan motor 1 error". The outdoor main board watches the fan speed: if the fan is turning slower than 100 rpm 20 seconds after it starts, the board stops the fan. It then restarts it, and if the same thing happens 3 times in a row within 60 seconds, the compressor and fan motor both stop. If that whole sequence repeats 5 times in a row, the compressor and fan stop permanently and the code stays until the fault is fixed. On units without a wired remote, the indoor unit shows it as 9 Operation light flashes and 7 Timer light flashes, with the Economy light flashing continuously; a wired remote shows 97. Newer manuals also show a sub-code such as 97.3 (outdoor unit fan motor 1 power source duty error) on the remote or mobile app.

Reviewed 2026-10-25 · Based on 4 manufacturer & service sources

What the code means

Fujitsu's service manuals list E:97 as "Outdoor unit fan motor error (Outdoor unit)", and the 410A mini-split troubleshooting guide calls it "Outdoor unit fan motor 1 error". The outdoor main board watches the fan speed: if the fan is turning slower than 100 rpm 20 seconds after it starts, the board stops the fan. It then restarts it, and if the same thing happens 3 times in a row within 60 seconds, the compressor and fan motor both stop. If that whole sequence repeats 5 times in a row, the compressor and fan stop permanently and the code stays until the fault is fixed. On units without a wired remote, the indoor unit shows it as 9 Operation light flashes and 7 Timer light flashes, with the Economy light flashing continuously; a wired remote shows 97. Newer manuals also show a sub-code such as 97.3 (outdoor unit fan motor 1 power source duty error) on the remote or mobile app.

Likely causes

The outdoor fan can't turn freely: something is caught in the blades, the blade has come loose or dropped off the shaft, or the motor or its bearing has locked up.
Too much heat around the fan motor, for example from nearby equipment that puts out heat, which trips the motor's protection.
A failed outdoor unit fan motor.
A failed outdoor unit main control board (or inverter board on some models) that isn't putting out the right voltage to the fan motor.

Safe DIY checks

⚠ Before you start

The outdoor main board feeds the fan motor with high-voltage DC, and inverter boards can hold a charge after power is off. Only spin the fan by hand with the breaker and disconnect off, and leave the fan motor test, voltage checks and board or motor replacement to a licensed HVAC technician.

Note the light pattern: 9 Operation flashes, 7 Timer flashes and a continuously flashing Economy light means E:97.
Turn the system off at the breaker or outdoor disconnect before going near the outdoor unit.
With power off, look through the outdoor fan grille for anything jammed in the blades, such as sticks, leaves, ice or a nest, and clear what you can reach safely without taking the unit apart.
Still with power off, gently turn the fan by hand, as Fujitsu's first check does. It should spin freely. If it's stuck, wobbles, scrapes or the blade is loose on the shaft, the fan or motor bearing needs a technician.
Check for anything around the outdoor unit that puts heat on it, like a dryer vent or another condenser blowing at it. Fujitsu says to let the temperature come down and then restart.
Restore power and run the system. If E:97 comes back, call the installer or a licensed HVAC technician.

🛠 When to call a pro

The fan won't turn freely by hand. Fujitsu says to replace the fan or bearing (motor) if either is abnormal.
The fan turns freely but the code returns. The technician checks the outdoor fan motor per the model's service parts information; Fujitsu says a bad fan motor gets replaced together with the outdoor main PCB.
The fan motor tests good. The technician measures the board's output at the fan connector (red to black is a high DC supply, about 280 V on the ASLH models and 262 to 390 V on others, and white to black about 15 V). If the voltage is wrong, Fujitsu says to replace the main PCB.
The system is new or under warranty. Contact the installer or Fujitsu General America technical support (866-952-8324) first.

Parts that commonly fix it

Always match the part number to your exact model.

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Outdoor unit fan motor

Only after the fan was checked by hand and the motor tested per Fujitsu's service manual; Fujitsu pairs a fan motor replacement with a new outdoor main PCB. Match your outdoor unit's exact model number.

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Outdoor unit main control board

Replaced with a bad fan motor, or on its own when the board's output voltage to the fan is wrong. Boards are model-specific.