What Does the Blinking Light on My Furnace Mean?
The blinking light on a furnace is a fault code from the control board. How to read it safely, what common codes mean, and when a reset is fine or not.
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Furnace Repair in Maplewood, MN
For a Maplewood furnace repair, approve the fix and we waive the $79 trip charge. The flat-rate price is written down before work starts, and we're open 7 days, 7am–9pm. In many north-end Maplewood ramblers, the furnace and water heater share one old chimney, a frequent source of no-heat calls.
Furnace repair calls in Maplewood homes
In Maplewood's north-end ramblers from the 1950s and 1960s, the furnace and gas water heater usually share one masonry chimney, and plenty of repair calls begin there. A chimney partly blocked by a crumbling clay liner or a bird's nest drafts weakly; the furnace's rollout or pressure switch trips and the furnace locks out. We check the draft and the flue along with the furnace, because relighting a furnace into a bad chimney only brings the problem back.
Split-entries farther south and east put the furnace in a lower-level utility room, often finished around it, where the filter and condensate trap are easy to forget. Townhomes add closets with tight clearances. The parts that fail are the usual ones: igniters, flame sensors, inducers, blower capacitors. Xcel Energy is the gas utility in Maplewood, so if you smell gas, leave the house and call Xcel's gas emergency line first. We handle the furnace once it's safe.
Updated September 23, 2026
How much does furnace repair cost in Maplewood?
Every furnace repair call in Maplewood starts with a $79 trip charge, waived when you approve the repair, and a written price before any work. Same prices in Maplewood as in every town we serve. National averages (HomeGuide, 2026), not our prices: an inducer motor $400–$1,100, a PSC blower motor $500–$1,400, a variable-speed (ECM) blower motor $800–$2,300. More in the furnace repair cost guide.
Signs your furnace needs a technician
- The inducer starts, the igniter glows, then the burners never light
- The burners light for a few seconds and shut off, over and over
- The furnace runs but the vents blow cool air
- A blinking code on the control board, or the furnace has locked out
- Your CO alarm went off or the burner flames look lazy and yellow
- New banging, squealing or grinding when the furnace starts
- Water pooling around a high-efficiency furnace
More detail on our furnace repair page.
Symptom guides: Blowing cold air · Won't ignite · Short cycling · Blinking light codes · Pressure switch trips · Strange noises · Leaking water · Burning smell · Red tag · Carbon monoxide
Furnace repair in Maplewood: questions
Our Maplewood furnace shuts off, and there's a reset button near the draft hood. Should we keep pressing it?
No. That's usually a spill or blocked-vent switch, and it trips when exhaust backs into the house instead of rising up the chimney. Pressing it again sends more exhaust into your basement. Turn the furnace off, make sure your CO alarms work, and call us. We'll check the chimney draft, the flue connector and the furnace, and give you a written price for what's wrong.
Our Maplewood split-entry furnace is in a finished utility room. Why does it keep tripping out?
Finished rooms can choke a furnace. A solid door, a room packed with storage, or drywall that closed off the old air supply can starve the burners of combustion air, and a return grille blocked by furniture raises the temperature across the heat exchanger. Either one can trip a safety switch and lock the furnace out. We check the room's air supply along with the furnace; a louvered door or a combustion-air duct often fixes it.
More in Maplewood
- Furnace replacement in Maplewood
- AC repair in Maplewood
- AC replacement in Maplewood
- All HVAC service in Maplewood
Furnace repair near Maplewood
- Oakdale, MN 2 mi
- Woodbury, MN 3 mi
- North St. Paul, MN 4 mi
- Saint Paul, MN 5 mi
- South St. Paul, MN 5 mi
- Lake Elmo, MN 5 mi
Brands we repair
Guides on furnace repair
No Heat in a Minnesota Winter: What to Check Before You Call
Furnace out on a cold night? What to check in order, what the blinking light means, how to keep pipes safe while you wait, and when to stop and call.
Read the guideFurnace Burning Smell in a Minneapolis Home: What Each Smell Means
Dust, hot plastic, rotten eggs or exhaust: what each furnace smell means, which mean shut it off now, and the basement causes we find in Minneapolis homes.
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Furnace repair in Maplewood? Call or send a request.