Carrier Furnace Error Codes: What the Blinking Light Means
Carrier furnace error codes from the maker's own troubleshooting guides: how to count the flashes safely, what each code means, and when to call a tech.
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Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in Independence (Hennepin County), about 22 miles from downtown Minneapolis.
Independence is a rural Hennepin County city of farm fields, dense woods and lakes, named for Lake Independence, and almost none of it is laid out on city blocks. Furnace and AC repair here, on propane or natural gas, starts with a $79 trip charge, waived when you approve the repair.
Updated October 27, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling

Around town: Lake Independence · Lake Sarah · Baker Park Reserve · Luce Line State Trail · Pioneer Creek
Book in IndependenceIndependence has no downtown of its own, and almost all of it is farms, woods and lakeshore. The oldest homes are farmhouses from the settlement decades, usually expanded later with a kitchen wing, a family room or a garage with a bedroom above. Heating those houses tends to mean one basement furnace under the original section, with weak or no duct runs to the additions, which is where space heaters and cold floors come from.
Country homes on acreage followed from the 1970s on: ramblers and split-entries first, then larger walkouts and two-stories on wooded lots, many with a heated garage or a shop. Houses built since the 1990s are bigger and more often run two furnaces, one for the main floors and one for the walkout. Around Lake Sarah and Lake Independence the lots are smaller and older, and some shoreline homes began as seasonal places that were winterized in stages, with the crawlspaces and patched-together ductwork that usually come with that history.
Winter in Independence is a propane and access problem as much as a heating one. Long driveways and gravel roads drift shut, and a propane truck that can't reach the tank during a subzero week leaves a house running on its reserve. Keep a wide path to the tank plowed and don't let it run low ahead of a cold forecast. Barns and shops with water lines need a low-temperature alarm, because a unit heater that quits overnight is found only when something freezes.
Lake Sarah and Lake Independence add real humidity to shoreline homes, and older lake places over crawlspaces can smell musty by August. On the wooded lots, shade keeps houses cooler, but trees drop leaves, seeds and cottonwood fluff into condenser coils, and horse properties add hay dust. Farmhouse bedrooms under steep, lightly insulated roofs are usually the hottest rooms in the house and a natural spot for a single ductless head, which also takes some load off the propane furnace in spring and fall.
Check both bills, because Independence is split on each. Xcel Energy electric customers use Xcel's heat pump and cooling rebates, while Wright-Hennepin Cooperative Electric members have their own heat pump, ductless and dual-fuel rebates, some requiring a Quality Installation certified contractor. Gas furnace rebates come from CenterPoint Energy or Xcel Energy, depending on which one owns the main on your road. On propane, the electric provider's heat pump programs are the ones that apply. For any of them, ask whether the rebate needs a registered contractor.
Rebate programs change every year; check the utility's current terms before you buy. Our guides: heat pump rebates, what happened to the federal credits.
Central Minnesota Heating and Cooling, owned by Eric Brown and in business since 2009, serves Independence and nearby towns in Hennepin County, about 22 miles from downtown Minneapolis. We're open 7 days, 7am–9pm, and no-heat calls get priority. Call 612-429-3465.
An HVAC service call in Independence is a flat $79 trip charge, waived when you approve the repair. You get a written price before any work. Installed prices are on our pricing page.
Often it does. Propane is usually one of the costlier ways to heat in Minnesota, and a cold-climate heat pump can carry the house through fall, spring and much of the winter, with the propane furnace taking over on the coldest days. The savings depend on your propane price and your electric rate, which varies with your provider here, so we run your actual numbers first.
For a building you heat only to keep water from freezing or to work in now and then, a vented propane or gas unit heater on a thermostat is simple and reliable. For a tack room or office where you want steady comfort and summer cooling, a ductless heat pump works well. Barns are dusty, so plan on more frequent filter changes and service than the house needs.
Extending a duct works when the basement runs under the addition and the furnace has capacity to spare. Often neither is true: additions sit on a crawlspace or slab, and the only route is a long run through unheated space. Then a ductless heat pump head heats and cools the addition on its own, and because it runs on electricity, it doesn't add to your propane use.
On, at a steady low setting well above freezing, never off. Shut off and drain water lines that run through the crawlspace or outside walls, and install a Wi-Fi thermostat that sends a low-temperature alert to your phone. Have the furnace serviced before you leave in fall, since a failed igniter in January can go unnoticed for days, and make sure the propane tank is full if the place runs on propane.
Both serve parts of the city. Independence's utilities page lists Xcel Energy and Wright-Hennepin Cooperative Electric for electric, and CenterPoint Energy and Xcel Energy for gas. Your latest bill names your provider. Wright-Hennepin runs its own heat pump and ductless rebates, some needing a Quality Installation certified contractor, so ask which program applies before you pick equipment.
Carrier furnace error codes from the maker's own troubleshooting guides: how to count the flashes safely, what each code means, and when to call a tech.
Read the guideReplacing central air in River Falls, WI: Manual J sizing, heat pump and ductless options, RFMU and Focus on Energy programs, and $5,200–$9,800 installed.
Read the guideA black furnace filter usually means soot, not dust. How to tell, the household and equipment causes, and when to shut it off and call 612-429-3465.
Read the guideBrands we service in Independence: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Heat out in Independence? Call or send a request.