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Southport Home Services Residential HVAC Caledonia, Wisconsin
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Carrier Furnace Repair Service

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24 Hour Warrantied Carrier Furnace RepairGenuine Carrier Furnace Parts

Your drive home is bitter in mid-January Wisconsin: but imaging a warm, cozy home gets you through just about the worst of winter traffic. When you get home, however, your trusted Carrier furnace is flashing and sits dormant, leaving your home just as cold inside as it is out. There’s only one home heating contractor to call when you need Carrier furnace repair.

The experts at Southport Home Services are trained to handle any furnace repair need, any time of the day. Our 24/7 heating services ensure you and your family won’t spend a night without heat in those dreaded Wisconsin winters. Call Southport 24/7. We are trained to diagnose issues in all Carrier furnaces, including:

  • Infinity Series Gas Furnace with Greenspeed Intelligence
  • Infinity Series Gas Furnaces
  • Performance Series Gas Furnaces
  • Comfort Series Gas Furnaces

Our experts have the years of experience to get your Carrier furnace up and running again while giving you the most affordable repair services in Wisconsin. Plus, if things look bleak, we can install a new furnace for you. As the largest Carrier dealer in the state, Southport offers great deals and prices on warrantied Carrier furnace installation.

Carrier furnace reviews

Don’t sweat it. Southport is prepared to handle every Carrier furnace problem. Carrier furnaces provide families with comfortable heat in those intense winter months, but every machine needs maintenance once in a while. Some Carrier furnace reviews mention:

  • Bad gas valve
  • Excessive blower whining
  • Rusted evaporator
  • Weathered compressor

The professionals at Southport are trained to combat Carrier Furnace issues with affordable replacement parts and convenient 24/7 service. Our all new Southport Club even offers scheduled maintenance.

Carrier furnace maintenance

Every furnace that works hard to maintain a comfortable climate in your home will need regular maintenance services to prevent problems like:

  • Carrier Furnace loud noises
  • Carrier Furnace system failure
  • Carrier Furnace faulty coils
  • Carrier Furnace gas valve replacement

Trained Southport furnace repair technicians are able to diagnose these issues before they become permanent (and costly) problems.

Along with certified technicians to properly install your preferred unit, the heating and cooling services offered at Southport includes:

  • free consultations for homeowners who aren’t sure what model furnace they want yet
  • 24/7 furnace repair for any emergency (or non-emergency) needs
  • A maintenance program dedicated to giving you the best service

Trust the team at Southport to offer professional, warrantied Carrier HVAC installation and Carrier HVAC repair all across Wisconsin. Contact Southport for:

Carrier Furnace Error Codes

Most Carrier furnaces use an LED light system to display errors. Lights will flash in a certain pattern depending on the error. Your Carrier furnace repair technician will use a key similar to the one below to diagnose the problem. Each of the following status codes is a two digit number with the first digit determined by the number of short flashes and the second digit by the number of long flashes.


Carrier Furnace Flash CodeMeaning

Carrier Furnace Error Code 11

NO PREVIOUS CODE - Stored status codes are erased when power (115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared

Carrier Furnace Error Code 12

BLOWER ON AFTER POWER UP - (115VAC or 24VAC) - Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed).

Carrier Furnace Error Code 13

LIMIT OR FLAME ROLL-OUT SWITCH LOCKOUT - Control will auto reset after three hours. Reset switch or replace fuse link. Refer to #33

Carrier Furnace Error Code 14

IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34

Carrier Furnace Error Code 21

GAS HEATING LOCKOUT - Control will NOT auto-reset. Check for: - Mis-wired gas valve - Defective control (valve relay)

Carrier Furnace Error Code 22

ABNORMAL FLAME-PROVING SIGNAL - Flame is proved while gas valve is de-energized. Inducer will run until fault is cleared. Check for: - Leaky gas valve - Stuck-open gas valve

Carrier Furnace Error Code 23

PRESSURE SWITCH DID NOT OPEN - Check for: - Obstructed pressure tubing - Pressure switch stuck closed.

Carrier Furnace Error Code 24

SECONDARY VOLTAGE FUSE IS OPEN - Check for: - Short-circuit in secondary voltage (24VAC) wiring

Carrier Furnace Error Code 31

HIGH-HEAT PRESSURE SWITCH OR RELAY DID NOT CLOSE OR REOPENED - Check for: - Control relay may be defective - Refer to #32

Carrier Furnace Error Code 32

LOW HEAT PRESSURE, DRAFT SAFEGUARD AUX-LIMIT (when used*) SWITCH DID NOT CLOSE OR REOPENED (DOWNFLOW ONLY*) - If open longer than five minutes, inducer shuts off for 15 minutes before retry. Check for:

  • Proper vent sizing
  • Low inducer voltage (115VAC)
  • Defective Blower motor or capacitor
  • Defective inducer motor
  • Defective pressure switch
  • Restricted vent
  • Inadequate combustion air supply
  • Excessive wind
  • Disconnected or obstructed pressure tubing If it opens after trial for ignition period, blower will come on for 90 second recycle delay

Carrier Furnace Error Code 33

LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - If open longer than three minutes, code changes to #13. Flame roll-out switch requires manual reset. Check for:

  • Dirty filter or restricted duct system
  • Loose blower wheel
  • Defective blower motor or capacitor
  • Defective switch or connections
  • Inadequate combustion air supply (Flame Roll-out Switch or fuse link open)
  • Open Flame Roll-out switch, or fuse link. Manual reset or replace

Carrier Furnace Error Code 34

IGNITION PROVING FAILURE - Control will try three more times before lockout #14 occurs. If flame signal is lost after trial for ignition period, blower will come on for 90 second recycle delay. Check for:

  • Gas valve defective or gas valve turned off
  • Oxide buildup on flame sensor (clean with fine steel wool)
  • Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal in HIGH HEAT)
  • Green wire MUST be connected to furnace sheet metal.
  • Flame sensor must be ungrounded.
  • Manual valve shut-off.
  • Defective Hot Surface Ignitor
  • Control ground continuity
  • Inadequate flame carryover or rough ignition.
  • Low inlet gas pressure

Carrier Furnace Error Code 43


  • Disconnected or obstructed pressure tubing
  • Pressure switch stuck open
  • Refer to #32 and #33

Carrier Furnace Error Code 45


Troubleshooting a Carrier Furnace

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