American Standard Furnace Won’t Ignite in Greater Vancouver — Causes & Repair

When your American Standard furnace tries to start — you hear the inducer spin up, maybe the click of the gas valve — but the burners never light and no heat follows, you have an ignition problem. It’s one of the most common no-heat calls in Greater Vancouver, and while a cold house is stressful, the ignition sequence is a logical chain of steps, and a failure usually stops at one identifiable link.

Modern American Standard furnaces use hot-surface ignition: a control board runs a start sequence, an inducer proves venting through the pressure switch, a hot-surface igniter glows to a high temperature, the gas valve opens, and the flame sensor confirms the flame. If any step in that chain fails, the burners won’t light. American Standard shares its control platform with Trane, its sister brand, so this ignition sequence is one our technicians read every day. Understanding where the chain broke — before the igniter glows, or after — is the key to a fast diagnosis.

ROMA Heating & Cooling has diagnosed no-ignition faults on American Standard furnaces across Vancouver, Burnaby, Surrey and the North Shore since 1999. Here are the likely causes, the safe checks you can run, and where a licensed gas technician must take over. Safety first: if you smell gas, leave the home and call FortisBC emergency and 911 from outside — do not troubleshoot or keep trying to light it.

Most likely reasons an American Standard furnace won’t ignite

Failed or cracked hot-surface igniter

The igniter is a fragile element that glows red-hot to light the gas. It’s one of the most common ignition failures — a cracked or worn igniter won’t reach temperature, so the gas never lights. Safe check: none internal; the igniter is fragile and line-voltage, so a technician tests and replaces it.

No gas or low gas pressure

If the gas is off, the meter valve is closed, or supply pressure is low, the burners can’t light no matter how well the igniter glows. Safe check: confirm the gas is on and other gas appliances light; if the home has no gas, contact FortisBC.

Pressure-switch or venting fault stopping the sequence

The control won’t allow ignition until the pressure switch proves safe venting. A blocked intake or exhaust, a condensate backup, or a weak inducer keeps the switch open and halts the sequence before the igniter even glows. Safe check: clear the outdoor vent terminals and the condensate trap and line.

Ignition lockout after failed attempts

After several failed ignition attempts, the control locks out to protect the home from unburned gas. Until it’s reset (or the underlying fault fixed), it won’t try again. Safe check: one power-cycle reset at the breaker; if it locks out again, stop and call a tech.

Dirty flame sensor causing repeated failure

If the burners light briefly but the flame sensor can’t confirm the flame, the control shuts the gas and retries until it locks out — which can look like "won’t ignite." Safe check: none internal; a technician cleans the sensor and measures flame current.

Open safety switch upstream of ignition

The control won’t run the ignition sequence at all if a safety in the chain is open — a high-limit that hasn’t reset, a rollout switch that has tripped, or a condensate overflow switch on a high-efficiency unit. When one of these is open, you often get no inducer and no glow, because the board never gets permission to begin. Safe check: replace a dirty filter to clear a limit, confirm the condensate drain isn’t backed up, and reset once — but never reset a tripped rollout repeatedly, since it means flame is escaping the burner box.

Won’t-ignite quick-reference

📞 Talk to a licensed ROMA furnace technician — (604) 704-0300

Safe things to try once

Confirm the gas is on and that other gas appliances in the home light normally. Set the thermostat to HEAT, above room temperature, with fresh batteries. Replace a dirty 1" filter, seat the blower door fully, and make sure the furnace switch is on. Go outside and clear the intake and exhaust terminals and the condensate line, since a venting fault will stop ignition before it starts. Then reset the furnace once at the breaker and watch a full start attempt. If the igniter doesn’t glow, the burners don’t light, or it locks out again, stop and call a licensed gas technician. Do not keep cycling the furnace to force ignition — repeated attempts push unburned gas into the burner box, which is exactly what the lockout is preventing.

What a ROMA tech checks first

• The hot-surface igniter — resistance and whether it reaches ignition temperature.
• Gas supply and manifold pressure, and that the gas valve opens on command.
• The pressure switch, inducer, and intake/exhaust venting, including condensate.
• The flame sensor and flame current if the burners light but won’t stay lit.
• Stored lockout codes on the control board to see where the sequence stopped.

Repair vs. replace

A furnace that won’t ignite is nearly always a repair. A hot-surface igniter, a pressure switch, a flame-sensor cleaning, or clearing a blocked vent are routine, affordable fixes on an American Standard furnace. Replacement only becomes the honest call if the ignition failure sits on top of a cracked heat exchanger or a failing gas valve on an older, inefficient unit near the end of its life. In that case we’ll show you the finding, explain the safety issue, and compare the repair against a high-efficiency upgrade with any BC rebates — not push a new furnace when an igniter would restore heat.

When it is an emergency

A furnace that won’t ignite isn’t dangerous if you stop trying to force it, but the safety rules are absolute. If you smell gas at any point — especially after failed ignition attempts — leave the home and call FortisBC emergency and 911 from outside; do not touch switches. If a CO alarm sounds or anyone feels unwell, get everyone out and call 911. Never repeatedly reset a furnace to force it to light, and never attempt to light the burners manually.

American Standard furnaces and Greater Vancouver homes

Hot-surface igniters are a wear item, and in our long heating season they accumulate thousands of cycles — so an igniter failing on the first cold night is a classic Vancouver, Burnaby and Coquitlam no-heat call. Just as common here are venting-related no-ignition faults on the high-efficiency, sidewall-vented furnaces found throughout Metro Vancouver townhomes and laneway homes: a storm-blocked terminal or a condensate backup keeps the pressure switch open, and the furnace never gets permission to ignite. Both are routine diagnoses, and both are quick fixes once the failed link is identified.

Why the start sequence tells the story

The most useful thing you can notice before calling is how far the start sequence gets. If nothing happens at all — no inducer, no glow — the control may not be getting a proper call for heat or a safety upstream is open. If the inducer runs but the igniter never glows, the pressure switch may not be proving, or the igniter itself has failed. If the igniter glows brightly but no flame follows, suspicion shifts to gas supply or the gas valve. And if the burners light for a moment and then drop out before retrying, the flame sensor is the prime suspect. When you call (604) 704-0300, describing which of these you observe lets our technician arrive focused on the right stage. From there we verify with instruments — igniter resistance, gas pressure, vent draft and flame current — and confirm reliable ignition across several full cycles, so the furnace lights every time, not just once for the technician.

Why ROMA for American Standard furnaces in Vancouver

ROMA Heating & Cooling is a TSBC-licensed gas contractor (Gas licence LGA0202903), bonded, insured and Red Seal-trained, rated 4.8★ from 221 Google reviews. We diagnose no-ignition faults step by step — igniter, gas, venting, flame sense and lockouts — and fix the real cause, with upfront flat-rate pricing and no hidden fees. Estimates on installs are free, 0% financing is available OAC, and we work seven days a week. Book a furnace repair or a free-estimate visit. We serve Vancouver, Burnaby, Richmond, Surrey, Coquitlam and the North Shore — call (604) 704-0300, and ask about maintenance plans to catch a tiring igniter before winter.

Frequently Asked Questions

Why won't my American Standard furnace ignite?

The ignition sequence stopped at one step. The most common causes are a failed hot-surface igniter, no gas or low gas pressure, a pressure-switch or venting fault halting the sequence, an ignition lockout after failed attempts, or a dirty flame sensor. Confirm the gas is on, try one reset, then call ROMA at (604) 704-0300 for a full diagnosis.

The igniter glows on my American Standard but the burners don't light — why?

If the hot-surface igniter glows but no flame follows, the problem is usually downstream of the igniter: no gas, low gas pressure, or a gas valve that isn’t opening. Confirm the gas is on and other gas appliances light; if they do, a technician needs to check gas pressure and the valve — that’s not a homeowner check.

How many times can I reset an American Standard furnace that won't ignite?

Just once. A single power-cycle reset can clear a one-time fault, but repeated resets to force ignition push unburned gas into the burner box — which is exactly what the lockout is designed to prevent. If it won’t light after one reset, stop and call a licensed gas technician.

Can a blocked vent stop my American Standard furnace from igniting?

Yes. High-efficiency American Standard furnaces won’t ignite until the pressure switch proves safe venting. A blocked intake or exhaust terminal, or a backed-up condensate line, keeps the switch open and halts the sequence before the igniter even glows. Clearing the outdoor vents and condensate line can restore it.

Does ROMA fix American Standard furnaces that won't ignite in Greater Vancouver?

Yes. ROMA Heating & Cooling diagnoses and repairs no-ignition faults on American Standard furnaces across Vancouver, Burnaby, Surrey, Coquitlam and the North Shore. We are TSBC-licensed, bonded and insured, with flat-rate pricing seven days a week. Call (604) 704-0300.

Reviewed by the ROMA Heating & Cooling team — TSBC-licensed gas contractor (Gas LGA0202903), serving Greater Vancouver since 1999. Updated July 2026.

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