Carrier furnace error code 31 (3 short 1 long), motors cycle and the led goes solid, I checked for obstructions on the Ask an Expert Home Improvement Questions HVAC Questions Carrier furnace error code 31 (3 short 1 long), motors cycle Tim H., HVAC Professional 3,972 Satisfied Customers You see, during combustion, the furnace burns fuel (natural gas, propane, etc.) Check that the thermostat is correctly set to heat. Air pressure issues can occur when the furnaces condenser coils are dirty or if the high-pressure switch is faulty. A single LED flash signals that the furnace has failed to detect a flame within three attempts from the time of ignition. The most common codes include; Understanding the basic error codes on your Keeprite furnace can help you take better care of the unit for a longer life or reliable use. Optional labour warranty is also available depending on your installation. If you find that you are calling a service technician for repairs every year, it might be time to consider a new furnace. Common HVAC Terms Glossary This fault indicates an improper a/c or cf switch setting. How to Maintain and Service Your Home Furnace. Problems: Secondary voltage fuse is open. Hot Water Heaters & Tankless Buyer Guide It's most likely that the ignitor itself is bad or that the flame sensor is either bad, or just dirty. If the high-pressure switch does not remake within 45 sec after opening, the furnace control board continues flashing fault code 31, shuts the unit down, waits 2 minutes, stops flashing fault code 31, and restarts the heating cycle. If it was a hose, wiring, or switch port issue, the furnace should light without further issues. The furnaces igniter might either be cracked or faulty. However, its important to remember that these online reviews cant be trusted altogether to provide you with candid information. Signals an ignition problem. If the first LED light is flashing rapidly and the other one is blinking slowly, it signals that your furnace has incorrect wiring. Each of the following status codes is a two digit number with the first digit determined by number of flashes of the YELLOW L.E.D. If dirty, clean the sensor using a fine abrasive pad. What Causes an Open Furnace Pressure Switch? This means that a normal flame has been detected. The best solution to a malfunctioned pressure switch, however, is to replace it. : Two flashes mean that the pressure switch has a problem. What HVAC Filter Type is Best For Your Home? If the flame signal is lost after the trial for ignition period, the blower will come on for a 90 second recycle delay. that the blower calibration has a problem that needs to be addressed. : Two flashes show that the furnace is likely to blow cold air because of the dropping flame. They will evaluate the whole system and provide you with better solutions. While furnace troubleshooting can often result in an easy fix like replacing a clogged filter sometimes you have to contact a professional for a complete system check and evaluation. Since 1902, Carrier has been a world leader in HVAC systems, consistently innovating with products that ensure high levels of comfort. Also, check the wiring for proper connections. We have a Carrier 58PAV and the Red LED light is on. We also have a Carrier 58PAV and have a constant Code 14 problem. Flame is proved while the gas valve is de-energized. Unfortunately, this problem cant be repaired and needs to be replaced. This can be caused by low pressure or incorrect wiring of the pressure switch. Napoleon air conditioner review, prices, and model comparison. This fault indicates that the inducer motor is not operating at calculated rpm or has not started within 10 sec after a call for heat. Is gas supply ON? In this guide, well review some common Carrier furnace codes and how to read the error codes. Enter your serial number and look up your product to find out about your warranty coverage. It wouldnt respond to pressure changes. 58MTA060-1258MTA080-1258MTA080-1658MTA100-1658MTA100-2058MTA120-20, 58MCA040-0858MCA040-1258MCA060-0858MCA060-1258MCA060-1658MCA080-1258MCA080-1658MCA080-2058MCA100-1658MCA100-2058MCA120-2058MCA140-20, 7 Costly Mistakes People Make When Buying a Heating or Air Conditioning System. Signals that your furnace is not operating normally. But, again, we strongly recommend professional servicing and installation in case you need to replace the switch. Now you know where to look and what to do when your furnace LED flashes three times. Below a certain level, or if the fan isnt working at all, there wont be enough negative pressure within the draft inducer box to close the switch. With the hose still off, inspect it too. As it would with any device or appliance, furnace troubleshooting starts with common sense -- eliminating the easiest and most basic issues. The first number is indicated by fast blinks and the second number by slower blinks. Here, you would have to check a few things. Jan 4, 2012. If it has been open for more than five minutes, the inducer will turn off 15 minutes after attempting to start. If something ever goes wrong, you are going to see either an LED light of a certain color or a two-digit code (short and long flashes respectively). Careers Find a local Carrier expert you can trust, HVAC Education, Buying Tips, Furnaces, Technology, HVAC Education, Buying Tips, Furnaces, Heat Pumps, Troubleshooting, Technology. This includes a limited lifetime warranty on the heat exchanger as well as a limited 10-year warranty on parts. A furnace can work on reversed polarity for a long period of time, but, at one point, it might start having an issue with it. If your Carrier furnace is stuck in high-fire mode, the flashing yellow light will appear as an error code. If the pilot has gone out, follow your owners manual for further instructions. Before making that call, be sure to try steps 2 and 3 as described below. Thats where the pressure switch comes in handy. Contact a local Carrier expert to get an estimate for your home today. : Indicates regular operation with a call for cooling. Nine red flashes mean there is a polarity problem. Furnaces deploy a draft inducer motor/fan to remove these gases from the furnace and outside the house. If the high-pressure switch makes during pre-purge or just after ignition, the furnace control board continues operating until burners are lit, and inducer rpm is within 10% of calculated low-fire rpm. Show that your furnace has a primary open circuit. Personality connector pl5 is either not connected or jumpered wrong. You must immediately check if the gas valve is leaky. Check to ensure that the gas supply is still on. However, condenser models have two. Learn about our energy efficient innovations that can help you save on your heating & cooling energy expenses, while ensuring your home is comfortable. An open pressure switch may point to a bad furnace inducer motor, a bad pressure switch hose, an electrical circuit issue, or a defective switch. A gas valve solenoid stuck in high fire mode cant be repaired and needs to be replaced. This fault indicates the limit switch, rollout switch or auxiliary limit switch is open or unit is operating in high-heat only mode due to 2 successive low-heat limit trips. If it has blown, you will need to replace it. Code 2-1: This is a sign of gas heating lockout. Signals blower ON after power-up. The flame signal was lost after the trial for the ignition period. The -14 units can deliver sufficient airflow for 1-1/2 to 3-1/2 tons a/c and 600 to 1400 cfm for a continuous fan. Try resetting your furnaces circuit breaker. While it sounds dramatic, theres a reason why we go to great lengths to make sure our homes are not only secure, but comfortable as well. This fault indicates that setup switches sw-1 or sw-6 are ON when they should be OFF. Finally, a yellow light would mean that there is a problem of some sort in the system that requires a closer inspection. Additionally, youve noticed that it flashes three times as if to warn you. However, the furnace wont come ON. One flash of the light with a two-second pause between the flashes indicates a lockout for an hour. If there is ever a malfunction in the system, your Carrier furnace is going to alert you about it. This often results from short-circuiting in the secondary voltage wiring. If the burners fail to ignite after three attempts, the switch flips and cuts off any gas flow to the burner. So, you can do basic Carrier furnace troubleshooting if your system is not functioning properly. (The Carrier fault codes are two digit numbers. Turn off the furnace power and repair a short or replace the pressure switch. If this does not stabilize the unit, you may have to replace the thermostat. Thats why troubleshooting a furnace when its not functioning can be an additional source of comfort for you and your family. Then, armed with this information, pull out your owners manual to find out what the light pattern means. The flame was not sensed during the trial for the ignition period. It may be operating when it shouldnt. If the pressure level doesnt rise to the setting, the switch will remain open. Your Ultimate Guide to Error Codes, Goodman Air Conditioner Codes: Troubleshooting Common Goodman AC Failures, How to fix the American Standard HVAC 3 Flash Error Code. Check both the inner and outer condenser coils for dust and debris, gently cleaning with a soft cloth if needed. Any idea what this carrier heater code is? You should check for improper switch wiring, possibly sagging pipes, etc. If its blinking steadily and continuously, the furnace is running normally and doesnt require intervention. 17 comments 100% Upvoted Log in or sign up to leave a comment Log In Sign Up The alert might become annoying, especially, in case you have already fixed the problem. If the high-pressure switch opens during high heat, the furnace control board starts flashing fault code 31 and ramps inducer rpm up until the high-pressure switch remakes. Carrier furnace diagnostic code 31 or 3-1. Stored status codes are erased when power to control is interrupted. If you are a Trane furnace user, you should know that you own one of the best furnaces today. If the LED light comes on when you start the furnace and stays on for the rest of the heating operation, everything is fine. Usually found where the cold air enters the unit, either in the cold air return duct or the entrance to the blower chamber. Review your owners manual to correct polarity. This applies to nearly all furnaces unless the manufacturer says otherwise. If this hose is compromised, it may fail to relay current pressure readings. First, purchase a replacement, ideally an OEM product, from a licensed dealer. The following are common patterns the flashing lights can make and what each blinking pattern means. But while . thx gang! In addition, the flashing LEDs on your furnace will communicate a specific fault code that appears on the diagnostic chart. Warning! If you are having issues with your oil furnace, the first step should be to check the air filter. Learn how to choose and maintain your HVAC system. Unfortunately, a problem experienced during the ignition sequence constitutes a safety hazard. How to Determine the Age of A.O. Is it an open limit switch? I disconnected the power to the furnace for about 15 minutes and then plugged it back in. These can often give you a good starting point as to what you can expect in relation to costs as well as available services. So, its good news. If it does, but isnt running, the motor has likely failed. : Are a sign of regular operation with a call for heating. A dirty filter will likely appear to be gray and possibly have a visible layer dusty buildup. Check for: build-up on the flame sensor; proper microamp distribution to the flame sensor; defective gas valve or turned off gas valve; faulty hot surface ignitor; low inlet gas pressure; the manual valve is shut-off; continuity of control ground; low flame carryover or rough ignition; ungrounded flame sensor. Replace the panel or door to your Carrier furnace. If the code remains, the low-pressure switch may be faulty and need replacement. Coleman furnace review, prices, and model comparison. So, DIY is out of the equation. By optimizing the performance of your units internal components youll undoubtedly make your home more comfortable. If this doesnt seem to be the case, then the connecting belt may have simply broken. A complete Carrier furnace repair guide, from how to replace your air filter, to troubleshooting and error codes, model numbers and more! If the high-pressure switch remains made, the furnace control board starts flashing fault code 31, shuts the unit down, waits 2 minutes, stops flashing fault code 31, and restarts the heating cycle. Your blower motor may have completely burnt out. Bryant Furnace LED Codes 3 Short 2 Long Bryant doesn't have a 3-2 error code, but there is a 2-3 code (2 short flashes and 2 long flashes). Read: Two-Stage Furnace - What Are . Check for an obstruction in the pressure tubing or a pressure switch that is stuck closed. These error codes are seen in three different colors, i.e., red, green, and amber (or yellow). Says the flame roll-out switch is open. 5 Red flashes. My blinking lights are 3 short, 3 long. The pressure switch relies on a unique diaphragm to suck the lever that ultimately closes the relevant circuitry. Blower motor speed cannot be maintained within 10% of calculated speed over a 30-sec period. Check the air filter. Perhaps the draft inducer motor has malfunctioned, or the pressure switch is bad. The pressure switch has a port to help hold the connecting hose sturdily. : This indicates that the high-limit switch is open. Your experience and expertise are of high value when troubleshooting this unit. When your furnace begins to blink, it means theres a problem. If you have fuel oil, you may have a plugged fuel filter or nozzle, and it might be time to contact a professional. Problem B: Check the furnace filter and replace it if dirty. If the fault code is flashing, the unit still operates, but it defaults to the closest allowable airflow. Click here to use the chatbox to speak with one of our technicians.No in-home service calls. Customer : It's acctually back to 3 short 3 long (limited circuit fault). : Indicate the draft inducer motor isnt functioning correctly. Then trace it to the pressure switch and disconnect it on this end too. Learn about our innovative products and how they can help improve your comfort. The furnaces have flashing LED lights within their control boards where error codes are displayed. Otherwise, youd be banking on guesswork. Are you wondering if your current system is still under warranty. You can use a clean cloth to wipe the valve and see if it helps. You should check if the inducer system is operating normally. As the seasons change, we all know how bad allergies can get. The following are the most common codes decoded. A clogged filter limits the amount of air that gets through. This fault can indicate 1 of the following: Problems: Blower outside valid speed range. Yes means that everything is okay with the component. Alternatively, your furnace needs pressure switch replacement. Keep in mind that the lifespan of your furnace may vary most should last a minimum of fifteen years, and longer timeframes arent unusual. carrier furnace codes The flashing LEDs on your furnace will correspond to a specific fault code that is shown here on their diagnostic chart. To fix this problem, you need to do proper polarity. To fix the issue, troubleshoot the furnace for low inlet gas pressure, a defective gas valve, low flame carryover, rough ignition, or an ungrounded flame sensor. To access it, unscrew the panel and put it aside. What Does A Blinking Red Light On Furnace Mean. Signals an abnormal flame sensing process. Call us any time you need to fix a furnace fast! A pressure switch is a disc-shaped object with a black, flexible tubing that connects to the draft inducer blower. As this situation can be dangerous, we recommend a professional service to assess the problem. When your Carrier furnace suffers a malfunction, it uses two-digit number codes to alert you. Infinity thermostats are smart thermostats certified by ENERGY STAR that can be used with the heating and cooling units manufactured by Carrier. It indicates the state or mode in which the burner is operating. LED code is display 34 which, per the manual, means IGNITION PROVING FAILURE. Only 2 year old carrier unit. For flame. Also, inspect it for cuts and general damage. What Should The Flame Look Like in A Gas Furnace? Locate the gas cutoff valve near your furnace. Amana furnace review, prices, and model comparison. The first number is determined by the number of short flashes and the second digit by the number of long flashes. The problem is typically a dirty air filter, the wrong-sized ductwork, the wrong blower speed setting, or a bad blower motor. The stored status codes are erased after 72 hours or when power to the system is interrupted. Leave a review on social media or contact us directly. This guide uses your expertise and observations to lead you to the trouble spot as efficiently as possible. Keep in mind that whenever the furnace control board shuts the unit down, gas shuts off immediately, the inducer continues running for 15 sec, and if the blower is running, it remains running at low-heat speed or reduces to low-heat speed for selected off delay. Otherwise, replace it. If low-pressure switch does not make within 45 sec after call for heat is initiated, furnace control board starts flashing Fault Code 32, shuts unit down, waits 2 minutes, stops flashing Fault Code 32, and restarts heating cycle. This may be due to a closed gas valve. This fault could also indicate the gas valve relay on the furnace control board is stuck closed, or there is a miswire/short to gas valve wiring. : This is a sign of gas heating lockout. An obstructed flue pipe: As we mentioned earlier, the draft inducer must clear exhaust gases from the furnace before the pressure switch can close. American Standard air conditioner review, prices, and model comparison. LACBFFA NCBFAA FTA: Foreign Trade Association CBP: U.S. Customs & Border Protection PCC: Pacific Coast Council Price Transfer HTA: Harbor Trucking Association Global Pest Port of Long Beach WIT - LA WIT- OC ACE MATSON (C-60) MAERSK (APM, B-400, MAERSK) **PIER A (A-88, SSA, ZIM) Pacific Container Term (PCT, Pier J-246, COSCO) Total Terminals . If this hose is compromised, it may fail to relay current pressure readings. Suite 1400 Long Beach, CA 90802 United States. Our customer service representatives are here to help. If you know how to read the codes correctly, you can cross-reference with your owners manual to determine why your furnace is misbehaving. However, the furnace will auto-reset after some hours. 12 BLOWER ON AFTER POWER UP (115V or 24V) - Blower runs for 90 seconds, if unit. KeepRite furnace review, prices, and model comparison. Check for a short circuit in the secondary voltage wiring. Carrier furnace review, prices, and model comparison. Check that the thermostat is set correctly to heat. If you do not have heat, the thermostat could be set on off or cool. If this is the case, change it to heat. Or, perhaps it doesnt run altogether. You should check the polarity at the unit and make sure that it is correct. Indicates an open flame roll-out switch. So, what do the various number of flashes mean? It wouldnt respond to pressure changes. Read: Why Furnace Is Not Blowing Hot Air? Slow amber flashing means that the furnace is operating normally and calling for heat. ComfortMaker furnace review, prices, and model comparison. Problems: Inducer outside valid speed range. Not only do we have a complete family of Carrier home furnaces designed to fit your needs, we can help walk you through the basics of how to troubleshoot it when it malfunctions. Thus, the furnace cannot run. What it means: Carrier furnace code 31 typically indicates a problem with the high-pressure switch. Why Nest Thermostat Not Turning On? (Quiz), Learn more about our certification process, When to call a professional to repair your Carrier furnace, Learn the Benefits of a Free Homeowner Membership & Sign Up Now, Our HVAC Contractor Certification Process. This indicates that the blower calibration has a problem that needs to be addressed. You need to check if the gas valve wiring is correct. If its on auto, switch it to on. If the furnace fan does not start running after several minutes, you may have an issue with the thermostat, the furnace controls, or you may not have power to the furnace. The following are the common error codes to help you with troubleshooting whenever you run into a problem. Or, if you find that you are simply changing the furnace filters on a regular schedule and are only experiencing the occasional minor repair, you may have a number of years of reliable operation remaining. It could be stuck open or not getting enough negative pressure. Duct Cleaning Buyer Guide If its daytime, you should see sunlight at the other end. Reset thermostat. Watch the LED display and count the number of times the light blinks. Your furnaces flame sensor monitors the burner, detecting whether a flame is present. : Are a sign that the pressure switch is stuck closed, i.e., it wont close no matter what. Disconnect it at the blower end first. The most common codes are as follows; Additional error codes on Arcoair furnaces include; Coleman makes excellent furnaces known for durability and reliability. Get FREE Quotes from Certified Local Contractors! This calls for filter checking and cleaning and tightening loose wires. The furnace is ordinarily auto-reset after 3 hours. : The furnace is operating under high heat. Problem C: this can occur when the furnace is not properly grounded to your electrical panel or when there is a control panel failure. Let us help identify your perfect system. This fault indicates the limit switch has tripped 10 times in a row in a high fire or 3 times in a row in a low fire during a call for heat. We are having trouble understanding the directions provided in the manual to do the component test. Furnace Codes for Gas, Ignition Failure, or Proving Fault Any time you get a code referring to gas or ignition failure, or flame proving failure, your problem will exist in the burner assembly area. Entry Specialist Team 3 Phone: (562) 366-5403 Fax: (562) 628-7907. Look on the back of the furnace panel doors and find out what the 3 1 LED code is indicating. What Does A Blinking Green Light On A Furnace Mean? Press it to get to checkout on the menu (thats how Carrier calls its diagnostic mode). Are some of the wires naked, thus creating the risk of short-circuiting? Problem A: Clean the condenser coils. These issues may need to be resolved by a professional service technician. Perhaps the system isnt getting gas, or the ignitor doesnt work. Best Ductless Heat Pumps If it is, the primary heat exchanger likely has a problem. Also, can you fix it yourself, or do you need to call the pros? A failed ignition sequence causes this lockout problem. : The furnace will be flashing yellow, showing that polarity has reversed. : The furnace is functioning in low heat. Furnace pressure switches from around $6 to $150, depending on the furnace model and type of switch. KeepRite air conditioner review, prices, and model comparison. From Santa Monica. So, if you ever want to remove the message from the screen, follow these simple steps. For example, a rapidly flashing green light might mean that the blower system is working (which means that the furnace is providing heat to the house at the moment).