Fujitsu · Heat pump

65 IPM / trip terminal L error

High severity Fujitsu ductless split/multi/VRF (general code list)Fujitsu wall-mounted 7-15 (NA ASU/AOU type)Fujitsu slim duct ARU 7-18 (LL type)

What the control is telling you

Overcurrent through the inverter power module; compressor stops, and after 5 repeats it stays off. Indoor lamps: OPERATION (green) flashes 6x, TIMER (orange) flashes 5x, ECONOMY (green) flashes fast nonstop; wired remote shows 65.

Applies to: Fujitsu ductless heat pumps: Fujitsu ductless split/multi/VRF (general code list), Fujitsu wall-mounted 7-15 (NA ASU/AOU type), Fujitsu slim duct ARU 7-18 (LL type)

Likely causes

Loose compressor or board connections
Outdoor fan not running
Clogged outdoor coil
Compressor fault
Outdoor main PCB fault

Test and repair steps

Check all outdoor terminals and connectors.
Check the outdoor coil is clean and airflow is not blocked; spin the fan by hand.
Test the outdoor fan motor (see code 97).
Test the compressor windings.
Replace the outdoor main PCB if all else is good.

Settings for these units

Operating range and service space · Fujitsu multi-zone outdoor 18/24 type

Other codes on the same units

61 Outdoor reverse / missing phase or wiring error
62 Outdoor main PCB error (EEPROM / model / micro comms)
63 Inverter error
64 PFC / active filter circuit error
68 Rush current limiting resistor temp rise error
71 Discharge temperature sensor error
72 Compressor temperature sensor error
73 Outdoor coil liquid temperature sensor error

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Source: Fujitsu All Fujitsu split - multi - VRF (generic code list) codes.pdf - section error code table (indoor LED flashes); Fujitsu Wall-mounted 7-9-12-15 (North American trilingual, UTY-RNNUM remotes; e.g. ASU9-12-15 RLF1-RLS familie.pdf - section 14 Error codes; Fujitsu Wall-mounted KMCG (ASEH-AOEH 07-14) - Fujitsu UK; same error-code scheme as NA ASU-AOU units service S.pdf - section 3 Troubleshooting, 2 Troubleshooting with error code; Fujitsu Slim duct AR07-09-12-14-18 (ARU-ARYG LL-type equivalent) installation P-N 9381858064.pdf - section 14 Error codes. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.