If you own a Rheem furnace and you’ve encountered the dreaded code 33 error, you’re not alone. This common error message indicates an over temp limit error, meaning that the furnace is detecting a temperature limit exceedance. It’s a problem that many homeowners face, and it can disrupt your heating system when you need it the most.
When the code 33 error appears on your Rheem furnace, it’s essential to troubleshoot and fix the issue promptly. Ignoring the problem can lead to further damage and potential safety hazards. In this article, we will guide you through the steps to troubleshoot and resolve the Rheem furnace code 33 error.
Key Takeaways:
- The Rheem furnace code 33 indicates an over temp limit error.
- Attempting to fix the furnace yourself can be complex and potentially dangerous.
- Contact a certified HVAC technician to diagnose and resolve the issue.
Troubleshooting Rheem Furnace Code 33
When encountering a Rheem furnace code 33 error, it is crucial to identify and resolve the underlying issue promptly. The code 33 indicates an over temp limit error, which occurs when the furnace detects a temperature limit exceedance. While attempting to fix the furnace yourself can be complex and hazardous, we can provide you with troubleshooting tips that may help resolve the problem.
Potential Causes
- Open limit switch or flame rollout switch: These safety devices shut off the furnace if it detects hazardous conditions such as excessive heat or flames rolling out of the combustion chamber. Check the continuity of these switches and replace them if necessary.
- Faulty blower motor or capacitor: A malfunctioning blower motor may lead to insufficient airflow, causing the furnace to overheat. You can try resetting the motor or replacing the capacitor to rectify this problem.
- Blocked or dirty air filters: Restricted airflow due to clogged filters can cause the furnace to overheat. Regularly inspect and clean or replace the air filters to ensure proper airflow.
Professional Assistance
If the troubleshooting tips mentioned above do not resolve the Rheem furnace code 33 error, it is recommended to seek the assistance of a certified HVAC technician. A professional will have the expertise and tools necessary to diagnose and fix the issue safely.
| Potential Causes | Troubleshooting Tips |
|---|---|
| Open limit switch or flame rollout switch | Check continuity of switches Replace switches if necessary |
| Faulty blower motor or capacitor | Reset the motor Replace the capacitor |
| Blocked or dirty air filters | Inspect and clean or replace filters regularly |
Rheem Furnace Code 33 Reset and Other Solutions
In some cases, when faced with a Rheem furnace code 33 error, performing a reset can often resolve the issue. To begin the reset process, start by turning off the power to the furnace at the circuit breaker. After ensuring the power is completely off, wait for a few minutes to allow any residual power to dissipate. This waiting period is crucial as it allows the control board to fully reset itself. Once the waiting time has elapsed, switch the power back on, and the furnace should restart with the error code cleared.
However, if the code 33 error persists even after performing the reset, it’s important to explore other potential solutions. One possible culprit could be a faulty pressure switch. The pressure switch plays a vital role in the furnace’s operation, ensuring that the combustion process is functioning properly. If the switch is malfunctioning or not closing as it should, it can trigger the code 33 error. In such cases, it may be necessary to replace the pressure switch to resolve the issue.
It’s worth noting that attempting to diagnose and fix the furnace yourself can be complex, especially if you are not a trained HVAC technician. If you are uncomfortable with troubleshooting or if the issue persists after attempting the reset and checking the pressure switch, it is highly recommended to reach out to a certified HVAC professional. They have the expertise and proper equipment to accurately diagnose and address the code 33 error, ensuring the safety and functionality of your Rheem furnace.
FAQ
What does Rheem furnace code 33 mean?
Rheem furnace code 33 indicates an over temp limit error, which means the furnace is detecting a temperature limit exceedance. This error commonly occurs when the unit starts up cold.
Should I try to fix the Rheem furnace code 33 error myself?
It is recommended to contact a certified HVAC technician to diagnose and resolve the issue. Attempting to fix the furnace yourself can be complex and potentially dangerous.
What are some potential causes of a Rheem furnace code 33 error?
One possible cause is an open limit switch or flame rollout switch. These safety devices shut off the furnace if there are dangerous conditions, such as excessive heat or flames rolling out of the combustion chamber. Check the continuity of these switches and replace them if needed.
Can resetting the furnace fix the code 33 error?
In some cases, resetting the furnace can resolve the code 33 error. Turn off the power to the furnace at the circuit breaker, wait a few minutes, then turn the power back on. This can reset the control board and clear any temporary issues that may have caused the error.
Are there any troubleshooting tips for Rheem furnace code 33?
Some troubleshooting tips include checking for obstructions in the venting system, ensuring proper airflow to the furnace, and inspecting the air filter for blockages. If these steps don’t resolve the issue, it’s best to consult with a professional technician.
How can I reset the Rheem furnace code 33 pressure switch?
To reset the pressure switch, turn off the power to the furnace, disconnect the wires from the pressure switch terminals, wait for a few minutes, then reconnect the wires. Turn the power back on and see if the code 33 error persists.
What are some other solutions for the Rheem furnace code 33 error?
Aside from resetting the pressure switch, other potential solutions include checking the furnace’s air inlet and exhaust for blockages, inspecting the blower motor for proper operation, and ensuring the gas supply is sufficient and not interrupted.
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