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Every common LG fault code with what it means, the likely cause, and how CANRO Heating & Cooling fixes it — servicing LG ductless mini-splits, multi-zone systems and heat pumps across Greater Vancouver since 1999. Licensed Technical Safety BC contractor (gas LGA0043870 · boiler LBP0046450).
LG mini-splits display a two-digit “CH” code (CH01–CH99) on the indoor unit or wired remote. The most common LG codes 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 LG 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 return-air temperature sensor open or shorted.
Common causes: Failed/disconnected room thermistor.
What to do: Service.
Reset guidance: no
What it means: Indoor coil inlet sensor fault.
Common causes: Failed sensor.
What to do: Service.
Reset guidance: no
What it means: Communication lost between the wired controller and indoor unit.
Common causes: Controller cable, controller, board.
What to do: Service.
Reset guidance: no
What it means: Condensate not draining — float switch tripped.
Common causes: Clogged drain, failed pump.
What to do: Clear drain; service pump.
Reset guidance: no
What it means: No communication between indoor and outdoor units.
Common causes: Interconnect wiring, board, voltage.
What to do: Service — common after wiring/power issues.
Reset guidance: no
What it means: Indoor coil outlet sensor fault.
Common causes: Failed sensor.
What to do: Service.
Reset guidance: no
What it means: On a multi-zone, indoor units are calling heat and cool at once.
Common causes: Set all zones to the same mode.
What to do: User fix; otherwise service.
Reset guidance: n/a
What it means: Indoor fan motor locked or no feedback.
Common causes: Motor, board, obstruction.
What to do: Service.
Reset guidance: no
What it means: Outdoor inverter power-module fault.
Common causes: Compressor, inverter board, charge, voltage.
What to do: Specialized service.
Reset guidance: no
What it means: Outdoor current exceeded the limit.
Common causes: Overload, charge, voltage, compressor.
What to do: Service.
Reset guidance: no
What it means: Inverter DC bus voltage low.
Common causes: Voltage supply, capacitor, board.
What to do: Service.
Reset guidance: no
What it means: Discharge / outdoor-air / pipe sensor fault.
Common causes: Failed sensor.
What to do: Service.
Reset guidance: no
What it means: Indoor→outdoor signal-transmission fault.
Common causes: Wiring, board.
What to do: Service.
Reset guidance: no
What it means: Control-board memory error.
Common causes: Failed board.
What to do: Board service.
Reset guidance: no
What it means: Outdoor power-module overheating.
Common causes: Dirty heat sink, fan, ambient, 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 LG repairOur licensed Red Seal technicians diagnose and repair LG ductless mini-splits, multi-zone systems and 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 LG 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 LG 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 LG 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 LG 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!”
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“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.