A.O. Smith Error Code 39: If you have an A.O. Smith Hot Water System and see Error Code 39 flashing twice on the display screen, it means there is a problem with the air-fuel ratio rod (AFR) of your water heater. The AFR rod is responsible for monitoring the air fuel ratio of the water heater’s internal combustion engine, which is very important for its proper functioning. However, the AFR rod can get damaged or covered in soot, which can prevent it from working correctly. It is crucial to keep the AFR rod clean and in good condition to ensure the safe use of your water heater. You should clean the rod to remove any soot and check for any damage or loose connections. In some cases, cleaning the sensors may solve the issue, but in other cases, you may need to replace the AFR rod as soon as possible
A.O. Smith Hot Water – Error Code 39
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A.O. Smith Hot Water System – Error Code 39
Is your A.O. Smith hot water system showing up with Error Code 39 on the screen? In this article, we’ll look at why it is happening, some potential next steps for fixing error code 39 and whether you should keep using your A.O. Smith hot water system.
What is a A.O. Smith Error Code 39?
If you have an A.O. Smith Hot Water System and see Error Code 39 flashing twice on the display screen, it means there is a problem with the air-fuel ratio rod (AFR) of your water heater. The AFR rod is responsible for monitoring the air fuel ratio of the water heater’s internal combustion engine, which is very important for its proper functioning. However, the AFR rod can get damaged or covered in soot, which can prevent it from working correctly. It is crucial to keep the AFR rod clean and in good condition to ensure the safe use of your water heater. You should clean the rod to remove any soot and check for any damage or loose connections. In some cases, cleaning the sensors may solve the issue, but in other cases, you may need to replace the AFR rod as soon as possible
Recommended solution/fix steps
If you see Error Code 39 on your A.O. Smith Hot Water System, it means there is an issue with your water heater’s air-fuel ratio rod. This rod monitors the air fuel ratio of your water heater’s internal combustion engine, and damage or soot can prevent it from functioning properly. To fix this issue, you need to clean your AFR rod of any soot and check for any damage or loose connections. If you need to replace the AFR rod, do so as soon as possible to ensure your water heater is functioning safely. It’s important to keep your AFR rod in good condition to avoid any potential hazards
Fault codes that are often associated with or mistaken for error code 39 are: Brand: A.O. Smith Hot Water System, Error Code: 39, Description: If your display screen is showing this error code and is flashing twice, then this is a sign that there is a problem with your water heater’s air-fuel ratio rod (sometimes referred to as the AFR for short). AFR rods monitor the air fuel ratio of your water heater’s internal combustion engine, which is a massively important part of your water heater’s function. However, damage and soot can sometimes prevent the AFR rod from doing its job properly and it requires attention. It’s super important that you keep your AFR rod in the best condition so you can keep using your water heater safely. Clean your AFR rod of any soot, and check for any damage or loose connections to see if you need to find a replacement. Sometimes if you are lucky, it could just be a bit of soot blocking the sensors – other times, you may need to find a replacement AFR
Can I still use my A.O. Smith hot water system?
No, the machine cannot be operated after seeing Error Code 39 on the A.O. Smith Hot Water System. This error code indicates a problem with the water heater’s air-fuel ratio rod, which is a crucial component of the internal combustion engine. The AFR rod monitors the air fuel ratio of the engine, and if it is damaged or covered in soot, it cannot function properly. It is essential to keep the AFR rod in good condition to ensure the safe operation of the water heater. If you see this error code, you should clean the AFR rod of any soot and check for damage or loose connections. If necessary, you may need to find a replacement AFR rod as soon as possible
