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Every common Daikin fault code with what it means, the likely cause, and how CANRO Heating & Cooling fixes it — servicing Daikin ductless mini-splits, heat pumps and gas furnaces across Greater Vancouver since 1999. Licensed Technical Safety BC contractor (gas LGA0043870 · boiler LBP0046450).
Daikin ductless and heat-pump systems report alphanumeric codes (A/C/E/F/H/J/L/U families) on the indoor unit or remote; Daikin gas furnaces use the Goodman-style flashing LED. The ductless code families are below.
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 Daikin 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: Indoor unit control-board fault.
Common causes: Failed PCB.
What to do: Service.
Reset guidance: no
What it means: Indoor freeze-up (cooling) or high-pressure trip.
Common causes: Low airflow, dirty coil/filter, charge.
What to do: Clean filter; if it returns, call.
Reset guidance: no
What it means: Indoor fan motor fault or locked.
Common causes: Motor, wiring, board.
What to do: Service.
Reset guidance: no
What it means: Indoor sensor fault.
Common causes: Failed thermistor.
What to do: Service.
Reset guidance: no
What it means: Outdoor compressor overload trip.
Common causes: Overheat, charge, voltage, restricted flow.
What to do: Call — protects compressor.
Reset guidance: no
What it means: Compressor failed to start or locked.
Common causes: Compressor, inverter, charge.
What to do: Specialized service.
Reset guidance: no
What it means: Outdoor fan motor fault.
Common causes: Motor, board.
What to do: Service.
Reset guidance: no
What it means: Discharge temp too high.
Common causes: Low charge, restricted flow, overload.
What to do: Call — charge/flow check.
Reset guidance: no
What it means: Inverter position-detection fault.
Common causes: Inverter board, compressor.
What to do: Specialized service.
Reset guidance: no
What it means: Inverter electrical-box overheat or compressor overcurrent.
Common causes: Inverter, charge, voltage, compressor.
What to do: Specialized service.
Reset guidance: no
What it means: System detects refrigerant shortage.
Common causes: Leak, undercharge.
What to do: Leak search + recharge (licensed).
Reset guidance: no
What it means: Communication/wiring fault between units.
Common causes: Interconnect wiring, board, voltage.
What to do: Service.
Reset guidance: no
What it means: Unit combination or capacity mismatch.
Common causes: Wrong pairing after a swap, wiring.
What to do: Service.
Reset guidance: no
What it means: Steady on = no call; off = no power or blown fuse.
Common causes: Normal, or tripped breaker / 3A fuse / no 24V.
What to do: Check power and fuse.
Reset guidance: n/a
What it means: Control is operating normally on a heat call.
Common causes: Normal.
What to do: None.
Reset guidance: n/a
What it means: Line voltage hot-neutral reversed or no ground.
Common causes: Mis-wired outlet/disconnect.
What to do: Correct wiring.
Reset guidance: no
What it means: Flame detected when there should be none (or no fault stored).
Common causes: Gas-valve leak-by, flame-sensor fault.
What to do: If recurring, shut off and call — safety fault.
Reset guidance: no
What it means: Pressure switch did not close (or opened during run).
Common causes: Blocked vent/intake, condensate trap, weak inducer, switch/tubing.
What to do: Inspect vent terminal if safe; otherwise call.
Reset guidance: no
What it means: Switch stuck closed.
Common causes: Stuck switch, wiring.
What to do: Service.
Reset guidance: no
What it means: Limit/rollout open from overheating.
Common causes: Dirty filter, blocked airflow, blocked flue, rollout (possible cracked HX).
What to do: Replace filter; if it returns, call — possible safety issue.
Reset guidance: no
What it means: Flame current present after the valve closed.
Common causes: Gas-valve leak-by, slow valve close.
What to do: Shut off and call — safety fault.
Reset guidance: no
What it means: Polarity or repeated flame dropout.
Common causes: Wiring, dirty flame sensor.
What to do: Service.
Reset guidance: one cycle OK
What it means: Gas-valve relay/circuit fault.
Common causes: Wiring or failed gas valve.
What to do: Service.
Reset guidance: no
What it means: Flame current below threshold (rod fouled).
Common causes: Oxidized flame sensor (very common — Lower Mainland service item).
What to do: Flame-sensor clean/replace.
Reset guidance: one cycle OK
What it means: Internal control or igniter fault.
Common causes: Failed igniter or board.
What to do: Service.
Reset guidance: no
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 Daikin repairOur licensed Red Seal technicians diagnose and repair Daikin ductless mini-splits, heat pumps and gas furnaces 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 Daikin 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 Daikin 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 Daikin 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 Daikin 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.
“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.