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Lennox Furnace Codes – What To Do When Your Furnace Is Making Strange Noises
In order for your furnace to operate optimally and safely, it needs to be maintained on a regular basis. This means that you need to keep an eye on your Lennox furnace codes to ensure things are running smoothly. If you notice something is off with your furnace, it’s essential that you take the time to figure out what the problem is and get it fixed right away. If you hear strange noises coming from your furnace at any point (or see flashing lights), don’t ignore them. Instead of putting off addressing these issues, take action as soon as possible so that you can avoid a more serious problem later on. In this blog post, we will discuss some of the more common Lennox furnace codes and what actions you should take if you detect one of these issues.
What are the most common Lennox Furnace Codes?
When a Lennox furnace emits a code, it’s basically telling you that a certain part of the furnace is malfunctioning. There are tons of Lennox furnace codes that can come up, but there are a few common ones that you might see. The following codes can be found on your Lennox furnace’s control board: – AIRFLOW: This code is common when the furnace doesn’t have enough air to function properly. If this code is appearing, you may have a clog in your system. A clog can cause the furnace to overheat and can even damage the system if it stays that way too long. – AIR SWITCH: This code is usually accompanied by a flashing red light. This means that the furnace is not getting enough fresh air to run properly. It could be due to a clog or a blocked air intake. – COIL: This code is usually accompanied by a flashing blue light and a beeping sound. It means that the demand for heat is more than the furnace can supply. This is usually due to a blocked or broken coil. – GAS PRESSURE: This code means that the furnace didn’t get enough gas to run. This could be due to a clogged or frozen gas line or a broken valve. – FAN: This code means that either the furnace fan isn’t running or the blower in the furnace isn’t working properly. You may have a broken fan belt or the blower may have clogged or burned out motor brushes. – OUTDOOR COIL: This code is pretty serious. It means that the outdoor coil is inoperable. This can be caused by debris on the coil, a broken fan or a clogged condenser.
Condenser and Evaporator Fan Failure
These two issues are usually related, so we will discuss them together. The condenser fan and evaporator fan are what help the furnace circulate air throughout the home. When one or both of these fans stop working, your furnace will still run, but it won’t be able to circulate air properly. This can cause your indoor air quality to suffer. When this issue happens, your furnace will likely emit a “CONDENSER FAN” or “EVIDENTER FAN” code. If you see a Lennox furnace code for either of these fans, you need to take immediate action. If nothing is done, the indoor air quality will only deteriorate, which could pose a significant health risk.
Outdoor Coil Condenser Failure
The outdoor coil condenser is what cools the air before it is sent into your home. If the condenser coil fails, the air that is being sent into the home won’t be cooled properly. This will cause your indoor air quality to suffer significantly. It may also cause the indoor temperature in your home to skyrocket. If the outdoor coil condenser fails, the Lennox furnace will emit a “COIL F” code. In order to repair the issue, you will need to replace the outdoor coil condenser.
Furnace Electronic Control Failure
If the control board in your furnace malfunctions, you will likely see a “CONTROL F” code flash on the screen. If this happens, you will need to contact a Lennox furnace repair company. If you ignore this issue and continue to operate the furnace, you could risk the furnace overheating and causing serious damage to your property.
Overheat Protection Device (OPD) Failure
The OPD device is what shuts off the furnace if it overheats. If the OPD malfunctions and doesn’t shut off the furnace when it should, it could result in serious damage to your system. If you see a Lennox furnace code for the OPD, you should shut off the furnace immediately and call a professional to come to take a look at it. You should also try to figure out the cause of the issue so you can prevent it from occurring again in the future.
As you can see, furnace problems can be pretty serious and can cause a lot of damage if they aren’t dealt with as soon as possible. If you notice any of the Lennox furnace codes listed above, it’s essential that you take the time to figure out what the problem is and get it fixed right away. If you wait to address the issue, the situation could worsen and cause even more damage to your property. This could cost you a lot of money in repairs, so it’s best to take care of the problem as soon as possible.