how to fix Navien error code 736?

Have you ever encountered error code 736 on your Navien boiler and wondered how to resolve it? This seemingly cryptic error message can cause frustration and inconvenience, leaving you without hot water when you need it most. But fear not, we are here to help you unravel the mystery and get your Navien boiler back up and running smoothly.

Navien error code 736 is an indication of a problem with the heat exchanger in your Navien boiler. Understanding how to troubleshoot this issue can save you time, money, and the hassle of calling a technician. So, let’s dive into the steps you can take to fix Navien error code 736 and restore your hot water supply.

Key Takeaways:

• Error code 736 on Navien boilers points to a heat exchanger problem.
• Start by cleaning the inlet water strainer and checking the automatic flow.
• If the issue persists, consider cleaning or replacing the heat exchanger.
• Replacing certain parts like the inlet water filter, water adjustment valve, or flush kit may be necessary.
• Regular maintenance and proper usage can help prevent Navien error codes.

Common Navien Error Codes and Troubleshooting Tips

Navien tankless water heaters are equipped with error codes that can help identify and resolve various issues. Understanding these error codes and their troubleshooting steps can help you address problems efficiently and get your Navien boiler back up and running.

E001: Water Boiling in the Heat Exchanger

When the E001 error code appears on your Navien boiler, it indicates that the water inside the heat exchanger is boiling. To troubleshoot this issue, you can start by checking the water flow and adjusting the temperature settings. If the problem persists, it may be necessary to clean the heat exchanger or replace certain components.

E003: Ignition Failure

If your Navien boiler displays the E003 error code, it means there was an ignition failure. In this case, you should check the gas supply, ensure proper ventilation, and inspect the ignition components. Cleaning or replacing faulty parts may be required to resolve the issue.

E004: False Flame Detection

A false flame detection error (E004) on your Navien boiler can occur due to issues with the flame rod or wiring. First, check and clean the flame rod. If that doesn’t solve the problem, ensure the wiring connections are secure. In some cases, you may need to replace the flame rod or troubleshoot the wiring further.

E007: Hot Water Outlet Thermistor Open

When the E007 error code appears, it indicates an open circuit in the hot water outlet thermistor. Check the wiring connections and ensure they are properly secured. If the issue persists, replacing the thermistor may be necessary.

E009: Abnormal Fan Motor Activity

If your Navien boiler displays the E009 error code, it suggests abnormal fan motor activity. Start by checking the fan motor wiring and its connections. Clean the fan and ensure it rotates freely. If the problem persists, it may be necessary to replace the fan motor.

Other Error Codes

Navien boilers can encounter additional error codes not covered in this section. For a complete list of error codes and their troubleshooting steps, refer to the Navien user manual or contact Navien technical support.

Knowing the common Navien error codes and troubleshooting steps can help you address issues promptly and effectively. However, it’s important to consult the user manual or reach out to Navien technical support for detailed guidance in resolving any error codes you may encounter with your Navien tankless water heater.

Resetting a Navien Tankless Water Heater and Additional Support

Resetting a Navien tankless water heater is a simple yet effective troubleshooting step that can help resolve various issues. If you encounter any problems with your Navien tankless water heater, follow these steps to reset it:

1. Unplug the unit from the power source
2. Wait for 10 seconds
3. Plug the unit back in

If resetting the Navien tankless water heater doesn’t resolve the issue, it’s recommended to contact Navien technical support or customer service for further assistance. They have a team of experts who can provide additional troubleshooting guidance based on the specific error code or situation you are facing.

Here are the different ways to reach out to Navien support:

1. Contact Navien technical support by phone: Call their dedicated technical support hotline at 1-800-519-8794. The experienced technicians can help diagnose and resolve the issue over the phone.
2. Email Navien customer service: Send an email to customerservice@navien.com. Describe the problem you are experiencing in detail, and include any error codes or relevant information to facilitate swift assistance.
3. Visit the Navien website for live chat: Navigate to the official Navien website, www.navieninc.com, and initiate a live chat with a customer support representative. This allows for real-time communication and immediate support during business hours.
4. Request a service call: If the issue requires hands-on troubleshooting, Navien can arrange for a professional technician to visit your location and resolve the problem.

Navien Technical Support Contact Information:

When contacting Navien support, be sure to provide accurate information about your tankless water heater model, the specific error code displayed, and any steps you have already taken to resolve the issue. This will enable the support team to provide you with the most effective solutions in a timely manner.

Remember, Navien is committed to ensuring customer satisfaction and resolving any technical difficulties you may encounter. Don’t hesitate to reach out for support when needed.

Conclusion

Navien error code 736 is a common issue that indicates a problem with the heat exchanger in Navien tankless water heaters. However, there are troubleshooting steps you can take to resolve this error and ensure your unit is functioning properly.

Firstly, it is recommended to clean the filters regularly to prevent any blockages that may interfere with the heat exchanger’s performance. In addition, checking and maintaining the valves associated with the heat exchanger can help resolve the error.

If these troubleshooting steps do not resolve the Navien error code 736, it is advisable to reach out to Navien’s technical support or customer service for further assistance. Their knowledgeable team can provide additional guidance or arrange for a professional technician to help fix the issue.

To prevent encountering Navien error code 736 or other similar issues in the future, be sure to schedule regular maintenance for your tankless water heater and follow the manufacturer’s recommended usage instructions. By taking these proactive measures, you can ensure the optimal performance of your Navien unit and minimize the occurrence of error codes.