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 Town of Oak Grove, WI
Yes, we repair furnaces in the Town of Oak Grove, Wisconsin. The call is a $79 trip charge, waived if the repair goes ahead, with the flat-rate price in writing first. We're open 7 days, 7am–9pm. Most homes here burn propane, so we check gas pressure at the furnace along with the ignition parts.
Furnace repair calls in Town of Oak Grove homes
Natural gas mains don't reach most of Oak Grove's rural roads, so furnace calls here are mostly propane, electric or dual-fuel. Propane furnaces fail in familiar ways: igniters, flame sensors and inducers worn by long winters, plus a regulator or pressure problem that leaves a weak, lifting flame. Run the tank dry and the furnace locks out; your propane supplier generally leak-tests the lines before gas is restored, and then we sort out anything still wrong with the furnace.
Homes on bluff tops and open acreage take the wind. Wind gusting across a side-wall PVC vent can open the pressure switch, and drifting snow buries low vents. Electric furnaces and heat pump backup heat bring different calls: heating elements, sequencers and tripped breakers. Shop and pole-shed heaters count too, and we can service a propane unit heater on the same visit if you ask. We hold a Wisconsin license, and Wisconsin code governs the work.
Updated September 23, 2026
How much does furnace repair cost in Town of Oak Grove?
Every furnace repair call in Town of Oak Grove starts with a $79 trip charge, waived when you approve the repair, and a written price before any work. Same prices in Town of Oak Grove as in every town we serve. National averages (HomeGuide, 2026), not our prices: an igniter $100–$250, a flame sensor $80–$250, a pressure switch $150–$400. 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 Town of Oak Grove: questions
The flame in our Oak Grove propane furnace looks weak and yellow. Is that dangerous?
It needs a look soon. A lazy yellow flame can mean low gas pressure from a regulator problem, dirty burners, or poor combustion that produces carbon monoxide. Shut the furnace off if your CO alarm sounds or the flame rolls out of the burner area. We measure gas pressure at the furnace and combustion in the flue, and if the fault is at the tank or regulator, your propane supplier handles that part.
Do you service heaters in pole sheds and shops in the Town of Oak Grove?
Yes. Propane unit heaters in shops fail at the same parts a furnace does: igniters, flame sensors, inducers and venting. Shop dust and cobwebs plug them faster, and vent caps on metal buildings take a beating from the wind. We can look at the shop heater on the same trip as the house furnace, and each repair gets its own written flat-rate price before we start.
More in Town of Oak Grove
- Furnace replacement in Town of Oak Grove
- AC repair in Town of Oak Grove
- AC replacement in Town of Oak Grove
- All HVAC service in Town of Oak Grove
Furnace repair near Town of Oak Grove
- Prescott, WI 7 mi
- River Falls, WI 7 mi
- Hastings, MN 10 mi
- Red Wing, MN 15 mi
- Cottage Grove, MN 15 mi
- Hudson, WI 16 mi
Brands we repair
Guides on furnace repair
Furnace Noises: What Each Sound Means and When to Shut It Off
Bang at startup, squeal, scrape, rattle, hum, click, whistle or a rumble after shutoff: what each furnace noise means and whether it's safe to keep running.
Read the guideThe Quietest Furnaces for Minnesota Homes, and Why the Ducts Matter as Much
The quietest gas furnaces from Lennox, Carrier and Trane, the features that really cut noise, and the duct fixes that quiet any furnace in a Minnesota home.
Read the guideContact Us
Furnace repair in Town of Oak Grove? Call or send a request.