HVAC Code Lookup

Fujitsu Mini-Split Code 98

Hard lockoutShown as: OPERATION lamp blinks 9 times, TIMER lamp blinks 8 times, ECONOMY lamp blinking continuously

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

  1. Second outdoor fan blade obstructed, iced, or the motor is locked
  2. Excessive ambient temperature around the fan motor
  3. Fan motor windings out of specification, or missing DC voltage to the motor
  4. 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

Other Fujitsu codes