Rheem Tankless Water Heater Error Codes: Troubleshooting Made Easy!

Rheem tankless water heater error codes indicate specific problems with the unit’s operation. We will explore the common error codes and their meanings, helping you troubleshoot and resolve any issues.

Rheem tankless water heaters are popular for their energy efficiency and compact design. However, like any appliance, they may encounter errors that require attention. Understanding these error codes can save you time and money by allowing you to address minor issues on your own or provide essential information to a professional technician.

By following the manufacturer’s guidelines and consulting the error code chart, you can quickly diagnose the problem and take appropriate action. In the following sections, we will discuss the most common Rheem tankless water heater error codes and the steps you can take to resolve them.

Common Error Codes

When using a Rheem Tankless Water Heater, you may encounter error codes indicating specific issues. Understanding these error codes can help you troubleshoot problems efficiently. Here are the common error codes and their meanings.

Code 11: No Ignition

If your Rheem Tankless Water Heater displays a Code 11, it means that the unit failed to ignite. This could be due to insufficient gas supply, blocked burner orifice, or a problem with the igniter. Check the gas supply, ensure the burner is clear of obstructions, and inspect the igniter for any issues. If the problem persists, it’s advisable to seek professional assistance.

Code 12: Flame Failure

When you see a Code 12 on your Rheem Tankless Water Heater, it indicates that the unit detected a flame failure during operation. This might occur due to an obstructed flue, insufficient gas supply, or a problem with the igniter or flame rod. Clear any obstructions in the flue, verify the gas supply, and examine the igniter and flame rod for any faults. If the issue persists, it’s recommended to contact a qualified technician for further diagnosis and repair.

Less Common Error Codes

In addition to the more common error codes that are encountered with Rheem tankless water heaters, there are a few less common error codes that you may come across. While these error codes are not as prevalent, it is still important to understand what they mean and how to address them.

Code 13: Oxygen Depletion Sensor

The Oxygen Depletion Sensor (ODS) is an important safety feature in Rheem tankless water heaters, as it detects if there is a lack of sufficient oxygen in the combustion chamber. If the ODS detects low oxygen levels, it will trigger error code 13. This error code indicates that there may be a problem with the oxygen supply or ventilation.

To troubleshoot this issue, you should first check if anything is blocking the air intake or exhaust vent. Make sure the venting system is properly installed and free from obstructions. Additionally, it is crucial to ensure that the area around the water heater is adequately ventilated. If the issue persists, it is recommended to consult a qualified technician to further diagnose and resolve the problem.

Code 16: Over-temperature

Error code 16 indicates that the water temperature inside the tankless water heater has exceeded the safe limit. This can occur due to various reasons, such as a malfunctioning temperature sensor or a failure in the heating system.

If you encounter this error code, you should first check the water temperature settings to ensure they are within the appropriate range. If the settings are correct, it is crucial to inspect the temperature sensor for any signs of damage or malfunction. In some cases, a simple reset of the water heater may resolve the issue. However, if the problem persists, it is recommended to contact a professional technician for further assessment and repair.

Troubleshooting Steps

Discover practical troubleshooting steps for addressing Rheem Tankless Water Heater Error Codes. Quickly resolve common issues with clear guidance. Ensure efficient and reliable performance with simple solutions for error code problems.

Basic Checks

Power supply is connected and on. Gas supply is open and sufficient. Water flow is not obstructed.

Advanced Troubleshooting

1. Check for error code on display.
2. Refer to Rheem manual for specific error code meanings.
3. Turn off and on the unit after resolving issue.
4. Contact a professional if error code persists.

Preventive Maintenance

Preventive maintenance plays a crucial role in ensuring the optimal performance and longevity of your Rheem tankless water heater. By conducting regular maintenance, you can prevent potential issues and extend the lifespan of your system. Here, we’ll discuss the importance of regular maintenance and provide valuable tips to help you keep your tankless water heater operating efficiently.

Importance Of Regular Maintenance

Regular maintenance of your Rheem tankless water heater is essential for ensuring its smooth operation. Over time, mineral buildup and sediment accumulation can lead to issues such as decreased efficiency and potential damage to the unit. By scheduling routine maintenance, you can address these issues before they escalate, saving you time and money in the long run.

Tips For Maintenance

• Flush the System: Regularly flushing your tankless water heater helps to remove sediment and mineral deposits, maintaining optimal efficiency.
• Inspect for Leaks: Periodically check for any signs of leakage to address potential issues early on.
• Check Venting System: Ensure that the venting system is free from obstructions to prevent any ventilation problems.
• Monitor Water Flow: Keep an eye on the water flow to detect any irregularities that may indicate a problem with the unit.
• Consider Professional Service: Seeking professional maintenance services at least once a year can help identify and address any underlying issues proactively.

Professional Assistance

Dealing with error codes on your Rheem tankless water heater can be frustrating, especially when it disrupts your daily routine. While some error codes are minor and can be resolved with simple troubleshooting, others may require professional assistance. It’s important to know when to seek the help of a qualified technician to ensure your tankless water heater is functioning optimally. In this section, we’ll discuss when to seek professional help and provide tips on choosing the right technician.

When To Seek Professional Help

If you encounter recurring error codes or have difficulty resolving the issue on your own, it’s time to call in the professionals. Certain error codes indicate more complex problems that can only be diagnosed and fixed by a knowledgeable technician. Here are a few instances when you should seek professional help:

1. The error code persists even after following the manufacturer’s troubleshooting steps.
2. You face frequent water heating disruptions or inconsistent hot water supply.
3. Unexpected leaks or unusual noises are coming from your tankless water heater.
4. You notice a significant decrease in water pressure or flow.

In such situations, it’s best to leave the troubleshooting and repairs to the experts. Attempting to fix the problem yourself without the necessary knowledge and experience may worsen the issue or even pose safety hazards.

Choosing The Right Technician

When it comes to selecting a technician for your Rheem tankless water heater, it’s essential to choose someone who is qualified and experienced. Here are a few tips to help you find the right technician:

• Research and select technicians who specialize in tankless water heaters.
• Check for certifications and licenses, such as being a Rheem certified technician.
• Read customer reviews and testimonials to gauge their reputation and service quality.
• Inquire about their response times and availability for emergency repairs.
• Ask for quotes from multiple technicians to compare prices and services.

By considering these factors, you can ensure that you hire a reliable technician who will efficiently diagnose and fix the error codes on your Rheem tankless water heater.

Safety Precautions

When using a Rheem tankless water heater, being aware of the safety precautions is crucial to ensure the well-being of your household and the longevity of the unit. It’s important to understand the specific safety measures when it comes to handling gas leaks and electrical safety. By following these guidelines, you can prevent potential hazards and maintain a safe environment in your home.

Handling Gas Leaks

Gas leaks can be extremely dangerous, posing a serious threat to your safety. If you detect a gas leak in the vicinity of your Rheem tankless water heater, it’s imperative to act swiftly and decisively. Here are the steps you should take:

• Immediately evacuate the premises and ensure that everyone is at a safe distance away from the suspected leak.
• Avoid using any electrical devices, including light switches, which may trigger a spark and ignite the gas.
• Contact your gas supplier or emergency services to report the leak and seek professional assistance.
• Do not attempt to fix the leak on your own, as this should be handled by qualified professionals.

Electrical Safety Measures

Handling electrical components requires careful attention to prevent the risk of shocks, fires, or other hazardous situations. When dealing with the electrical aspects of your Rheem tankless water heater, always adhere to the following safety measures:

1. Before conducting any maintenance or repairs, ensure that the power to the unit is completely turned off at the circuit breaker.
2. During any electrical work or troubleshooting, use insulated tools to minimize the risk of electrical shock.
3. Regularly inspect the electrical connections and wiring for signs of damage or wear, and seek professional assistance if any issues are detected.
4. Do not attempt to modify the electrical components of the unit unless you have the necessary expertise and qualifications.

Frequently Asked Questions For Rheem Tankless Water Heater Error Codes

Why Is My Rheem Tankless Water Heater Beeping And Flashing 11?

The Rheem tankless water heater is beeping and flashing 11 due to a communication error between the unit and the remote control. Consider checking the wiring or replacing the remote control to resolve the issue.

Where Is Rheem Error Code?

Rheem error codes can be found on the display panel of the Rheem system. They provide specific information to help identify and troubleshoot issues.

What Does Red Flashing Light On Rheem Water Heater Mean?

The red flashing light on a Rheem water heater indicates a system fault. This could be due to high water temperatures or pressure issues. Contact a professional technician for quick diagnosis and repair. Regular maintenance can prevent such issues in the future.

What Does E5 Mean On Rheem Tankless Water Heater?

The E5 error code on a Rheem tankless water heater indicates a sensor problem. This could be due to a bad connection or a malfunctioning sensor. Contact a qualified technician to diagnose and fix the issue. Regular maintenance can help prevent these errors.

Conclusion

To ensure smooth operation of your Rheem tankless water heater, it’s crucial to understand and address error codes promptly. By familiarizing yourself with these codes, you can troubleshoot issues effectively and prevent potential disruptions. Remember to refer to your user manual or contact a professional if you encounter any complex errors.

Regular maintenance and prompt attention to error codes will ensure your water heater functions optimally for years to come.