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Every common Fujitsu fault code with what it means, the likely cause, and how CANRO Heating & Cooling fixes it — servicing Fujitsu Halcyon ductless mini-splits and cold-climate heat pumps across Greater Vancouver since 1999. Licensed Technical Safety BC contractor (gas LGA0043870 · boiler LBP0046450).
Fujitsu Halcyon mini-splits indicate faults by blinking the indoor Operation and Timer LEDs in a count pattern and by showing a code on the wired or wireless controller in error-display mode.
Important: One power-cycle reset is generally safe for a transient fault. If the same code returns within minutes, stop resetting — lockouts exist to protect the heat exchanger, ignition system and gas-valve safety circuit. Note the exact code and call CANRO at (604) 359-1081. We carry common Fujitsu parts on every truck, so most code-triggered faults are fixed in one visit. Smell gas? Leave and call the gas utility emergency line first.
What it means: The indoor unit blinks the Operation and Timer LEDs in a count pattern when a fault is stored — read the exact code in controller error-display mode.
Common causes: Any of the faults below.
What to do: Note the blink count / controller code and call.
Reset guidance: no
What it means: Serial communication between indoor and outdoor units lost.
Common causes: Interconnect wiring, board, voltage.
What to do: Service — common after wiring/power issues.
Reset guidance: no
What it means: Indoor return-air temperature sensor fault.
Common causes: Failed/disconnected sensor.
What to do: Service.
Reset guidance: no
What it means: Indoor coil temperature sensor fault.
Common causes: Failed sensor.
What to do: Service.
Reset guidance: no
What it means: Indoor fan motor fault or no feedback.
Common causes: Motor, board, obstruction.
What to do: Service.
Reset guidance: no
What it means: Outdoor air / pipe / discharge sensor fault.
Common causes: Failed sensor.
What to do: Service.
Reset guidance: no
What it means: High-pressure or discharge-temperature protection.
Common causes: Dirty coil, charge, restricted flow, fan.
What to do: Clean coil; if it returns, call.
Reset guidance: no
What it means: Indoor coil icing (cooling) or overheat (heating).
Common causes: Low airflow, dirty filter, low charge.
What to do: Clean filter; if it returns, call.
Reset guidance: no
What it means: Outdoor fan motor or inverter power-module fault.
Common causes: Motor, inverter board, charge.
What to do: Specialized service.
Reset guidance: no
What it means: Not a fault — the controller is in error-display/history mode.
Common causes: User entered diagnostic mode.
What to do: Exit diagnostic mode.
Reset guidance: n/a
CANRO offers same-day and after-hours emergency repair across Greater Vancouver — no-heat, no-cooling and no-hot-water calls are prioritized. Note your code and call now.
📞 Call (604) 359-1081 — emergency Fujitsu repairOur licensed Red Seal technicians diagnose and repair Fujitsu Halcyon ductless mini-splits and cold-climate heat pumps in every Metro Vancouver city — Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North & West Vancouver, New Westminster, Delta, Langley, Port Moody, Port Coquitlam, White Rock, Pitt Meadows and Maple Ridge — with honest, up-front pricing and a 4.9-star rating from 85+ Google reviews.
This Fujitsu error-code guide is maintained by the CANRO Heating & Cooling team from 25+ years of HVAC install, service and repair across Greater Vancouver. Flash-count and code behaviour described match current Fujitsu model manuals; exact codes can vary by model and series, so confirm against your unit’s manual or tell us the code when you call. Last reviewed June 2026.
Each Fujitsu code points to a specific fault — ignition, pressure/draft, high-limit, flame-sensing, blower or communication. The guide above lists each one with its cause and fix. Tell us the exact code when you call (604) 359-1081 and we usually know the likely cause before arriving.
One power-cycle reset is fine for a one-off fault. If the same code returns within minutes, stop — repeated resets stress the ignition, gas-valve and heat-exchanger safety circuits. Note the code and call.
Yes — CANRO offers same-day and after-hours emergency response across Greater Vancouver, and we carry common Fujitsu parts so most code faults are fixed in one visit. Call (604) 359-1081.
Yes — Technical Safety BC gas contractor LGA0043870 and boiler licence LBP0046450, Red Seal technicians, fully insured, serving Greater Vancouver since 1999.
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25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.