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Every common American Standard fault code with what it means, the likely cause, and how CANRO Heating & Cooling fixes it — servicing American Standard furnaces, air conditioners and heat pumps across Greater Vancouver since 1999. Licensed Technical Safety BC contractor (gas LGA0043870 · boiler LBP0046450).
American Standard furnaces flash a diagnostic LED on the control board (count the blinks); AccuLink communicating systems show codes on the thermostat. American Standard and Trane share identical controls and codes.
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 American Standard 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: Control has power; no call for heat.
Common causes: Normal operation.
What to do: None.
Reset guidance: n/a
What it means: Control is responding to a heat call.
Common causes: Normal.
What to do: None.
Reset guidance: n/a
What it means: Soft-lockout — limit circuit open, or retries exceeded.
Common causes: Restricted airflow (dirty filter), blocked vent, failed limit, overheating.
What to do: Replace filter, clear vents; if it returns, call.
Reset guidance: cycle power
What it means: Pressure switch stuck open (or closed when it should be open).
Common causes: Blocked vent/intake, condensate trap, weak inducer, switch/tubing fault.
What to do: Inspect outdoor vent if safe; otherwise call.
Reset guidance: no
What it means: High-limit or rollout open.
Common causes: Overheating from low airflow, blocked flue, or a rollout trip (possible cracked heat exchanger).
What to do: Stop and call — rollout/limit trips are a safety concern.
Reset guidance: no
What it means: Control sees flame when the gas valve should be off.
Common causes: Gas-valve leak-by, flame-sensor/grounding fault.
What to do: Shut off and call — a safety fault.
Reset guidance: no
What it means: Line-voltage polarity reversed or no ground.
Common causes: Mis-wired outlet/disconnect, missing ground.
What to do: Electrician/technician to correct wiring.
Reset guidance: no
What it means: Gas-valve circuit fault or weak flame sensing.
Common causes: Failed gas valve, dirty flame sensor, wiring.
What to do: Service.
Reset guidance: one cycle OK
What it means: Outdoor unit does not run, ices, or trips; XL/communicating units show a code.
Common causes: Capacitor, contactor, low refrigerant, defrost control, reversing valve, compressor.
What to do: Read any code and call — refrigerant work is licensed.
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 American Standard repairOur licensed Red Seal technicians diagnose and repair American Standard furnaces, air conditioners 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 American Standard 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 American Standard 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 American Standard 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 American Standard 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.