Fujitsu ARU12RLF 12,000 BTU Ceiling Cassette Mini Split, 24 x 24 in, Quiet Operation 92 Error Fix: Indoor Unit PCB Error — EEPROM

Error code 92 on the Fujitsu ARU12RLF 12,000 BTU Ceiling Cassette Mini Split, 24 x 24 in, Quiet Operation means: Indoor Unit PCB Error — EEPROM. The indoor unit control board EEPROM (non-volatile memory) has become corrupted — this stores the unit's configuration, calibration data, and operating parameters; corruption can occur from power surges, static discharge, or component aging; the indoor PCB needs replacement; after replacement, the system may need to be re-commissioned to store the correct parameters for the connected outdoor unit

The most successful fix is "Replace the Indoor Unit PCB and Re-Commission System" (hard difficulty, ~90 minutes). Estimated DIY cost: $150-$250. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace the Indoor Unit PCB and Re-Commission System") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Service remote.

DIY cost: $150-$250. Professional repair typically costs $350-$500. Many homeowners save money by trying the top-ranked community fix first.

The Fujitsu ARU12RLF 12,000 BTU Ceiling Cassette Mini Split, 24 x 24 in, Quiet Operation has 8 other known error codes, including: 01 (Indoor Unit PCB Error), 02 (Communication Error — Indoor to Outdoor Unit), 03 (Communication Error — Remote Controller to Indoor Unit), 04 (Outdoor Unit PCB Error), 05 (Outdoor DC Fan Motor Open/Short Circuit), and 3 more.

Error code 92 also appears on 8 other Fujitsu models: 12,000 BTU 18 SEER Slim Duct Mini Split, 8 in Height, Quiet Operation, 12,000 BTU 25 SEER Halcyon Wall-Mount Mini Split with WiFi Control, 15,000 BTU 25 SEER Halcyon Wall-Mount Mini Split with Energy Saving Mode, 24,000 BTU 19 SEER Wall-Mount Mini Split with Low Ambient Cooling, 36,000 BTU 18 SEER Multi-Zone Heat Pump Outdoor Unit, 48,000 BTU Multi-Zone Heat Pump Outdoor Unit, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.