Bryant furnaces are renowned for their reliability and efficiency in home heating solutions. However, like all complex systems, they can encounter issues that disrupt their operation. One typical problem homeowners may face is the appearance of error code 33 on their Bryant furnace.
This code serves as a diagnostic tool, indicating specific malfunctions within the system. Understanding the implications of error code 33, its potential causes, and the appropriate troubleshooting steps is crucial for maintaining the optimal performance of your furnace.
What is Error Code 33?
A Bryant furnace has an error code 33, a “Limit Circuit Fault.” This fault arises when a stove has established conditions that are dangerous to the continuation of heating the metal. Therefore, the safety system triggers the stoppage of the heating process to avoid harm.
The limit switch, a critical safety component, monitors the temperature within the furnace. If the temperatures rise to levels that can be dangerous to the system, the switch gets triggered, shutting off the heating process for some time and allowing the system to cool.
Common Causes of Bryant Furnace Code 33
There are many causes of error code 33, namely:
- Limited Air Circulation: This is another common cause of furnace failure because a restricted airflow caused by a dirty or clogged air filter, for example, will result in overheating of the furnace. Proper cleanliness, especially replacing air filters, is crucial to avoiding airflow blockage.
- Obstruction of the ventilation system or shut Vents: This factor may limit air circulation and cause increased temperature within the furnace.
- Blower Motor Failure: The blower motor plays the role of circulating air within the furnace and the duct system. However, if it malfunctions or runs poorly, heat can be produced, and when it reaches the limit, the switch will be tripped.
- Clogged Heat Exchanger: Ideally, the heat exchanger transfers heat between fluids; however, the build-up of soot or dirt will interrupt the process, resulting in overheating of the furnace.
- Limit switch: A limit switch can have some issues in perceiving temperatures and thus cause some shutdowns that are not required.
- Wrong Gas Pressure: Wrong gas pressure always leads to excessive heat production to trigger the limit switch.
Troubleshooting Error Code 33.
In this case, the approach used to address error code 33 is quite logical to ensure the root of the problem is fixed.
- Check the filter and replace it when necessary;
- You can switch off the furnace and look for the air filter. It can be either above the air ducts or, in some cases, inside the blower compartment. Pull out the filter and clean it using your hand, or wash it in warm water to ensure it is clean and dirt-free. If it is clogged, one should get another one that would be appropriate for the manufacturer’s instructions. Experts suggest cleaning the air filter at least once a month and replace every 1- 3 months with a new one based on usage and surrounding conditions.
- Examine Vents and Ductwork:
- It is also essential that all supply and return vents are open and not blocked. Check for any blockage or part of the ducts that may restrict the airflow. As a reminder, it is wrong to shut off vents in specific rooms if these zones are not used, as such an action creates an improper load distribution and causes verbose heating.
- Assess the Blower Motor:
- Check for strange noises in the blower motor, which signal that it is worn out or faulty. If it is malfunctioning, it may be required to provide lubricants, clean or replace it. Before inspecting or repairing the blower motor, it is always advised that the electrical power supply to the furnace be turned off.
- Clean the Heat Exchanger:
- In the process of using the heat exchanger, it may gather soot and other debris, reducing its effectiveness. Cleaning means removing the layer that builds up to prevent the heat from being transferred effectively. Because of the high risk involved in a variety of situations that may be encountered, it is better if this job is done by an experienced professional who is an HVAC technician.
- Test the Limit Switch:
- This will require you to utilize your multimeter to check the limit switch’s continuity. If it is deemed as so, it may require replacement. It is worth noting that electrical components are usually a concern in terms of handling since they pose certain risks. Unique action: For the new ones, it is advisable to consult professionals or well-meaning experts for help.
- Verify Gas Pressure:
- High pressure in the gas can lead to overheating of the mentioned parts in the transmission system. It can be fixed there, checked, and regulated by a technician who can set the gas pressure as the manufacturer recommends. Gas systems require precise handling. For any matters that have to do with gas, it is advisable to seek the help of a professional.
Re-Setting the Furnace after the problem with Error Code 33.
Once you have addressed this particular problem, it is possible to reset the furnace to get rid of the error code and address the normal functioning of the machine:
- Shut Off Electricity Supply: Turn off the power supply from the furnace in the electrical panel; the switch could be near the stove or on the wall. Instead, you can turn the circuit breaker for the particular device or appliance off depending on where the shock was felt.
- Wait for a Few Minutes: This command allows the system to run basic internal diagnostics.
- Switching Back On: This can be done by switching on the power switch if there is one or switching on the circuit breaker if there is any.
- There is nothing like setting the appropriate temperature using the thermostat and then turning the heating function on.
If the furnace is running normally and there is no appearance of error code 33 again, the solution has been achieved. However, if the error is not fixed, consulting additional resources or approaching a specialist may be necessary.
Also read: Goodman furnace error code F02.
Preventive Measures to Avoid Error Code 33.
The following preventive measures would help one to avoid getting to the error code 33 in the future:
- Regular Maintenance:
- Schedule Annual Inspections: An HVAC technician should inspect and service your furnace at least once a year to recommend or detect any problems that may occur. Notably, one must replace the filter oftentimes and clean vents to guarantee free and proper air circulation.
- Maintain Clearances Around the Furnace:
- Ensure there is free passage around the furnace to avoid accumulating items of furniture, dust, or debris that may hinder free air circulation and pose a danger of fire.
- Monitor System Performance:
- You should be able to detect changes in terms of noise, cycling, or heating; therefore, one has to observe the system keenly to change them.
Conclusion
Overall, Bryant Furnace Code 33 means a “Limit Circuit Fault” aims to stop the system’s operation to avoid overheating issues and casualties on the heating system. This should be settled as early as possible since it will help solve the problem affecting the furnace’s efficiency and prevent any dangers that could occur.
Some leading causes that can be checked and solved are restriction of airflow, vent blockage, blower motor failure, clogged heat exchangers, failed limit switches, and low or high gas pressure. A practical approach that should be taken to avoid the occurrence of error code 33 includes the frequency of changing air filters, preventing obstruction of vents, and annually hiring a professional technician.
Always remember that safety comes first; if you have doubts about any diagnosis or fix, it is recommended that you get a professional HVAC specialist to conduct the work on your furnace system for the best safety measures to be taken.
Frequently Asked Questions (FAQs)
What does Bryant’s error code 33 indicate in my furnace?
Bryant furnace has an error code 33, described as a “Limit Circuit Fault.” This function comes in handy in preventing the stove from causing more harm due to excessive heating, which may lead to hazards.
After getting the error code 33, can I attempt to reset the furnace myself?
Yes, resetting the furnace by switching off the power supply and waiting a few minutes, then switching on the power supply is possible. Nevertheless, the cause of the error should be isolated and fixed before the process is reset to avoid future occurrences.
How often do I need to change the air filter for non-receipt of error code 33?
The air filter should be checked every month and changed every one to three months depending on the usage level and other conditions. A clean air filter will let air flow through the system, which will help avoid generating new codes resulting in overheating.
What should I do once the error code 33 is still showing after trying the resetting of the furnace?
If the error continues to be present, an active problem will not be fixed in the system. In such cases, one should seek the service of a professional and experienced HVAC technician to resolve the issue, as they will determine the cause of the problem correctly.
Does that mean that vent positioning or blockage can lead to shooting an error code 33?
Yes, the vents can be blocked or closed, causing poor air circulation within the said area and thus causing the temperatures to rise in the furnace. This can activate the limit switch, giving the error code 33. It’s, however, important that all the vents are open and free from blockage to properly function the furnace.
Is it safe to ignore the limit switch to stop error code 33?
No, there are various risks to bypassing the limit switch; it is an action that should not be encouraged. Depending on the model, the limit switch is one of the safety systems that prevent an overload of the device due to high temperatures. It is affiliated with severe dangers such as fire risks if the system is tampered with or its connections are bypassed. The errors should always be addressed from their source.
