Navien is a well-known brand for its high-quality tankless water heaters. However, like any other appliance, Navien tankless water heaters can experience issues from time to time.
One of the most common issues that users encounter is the E001 error code, which indicates that water is boiling in the heat exchanger. In this article, I’ll discuss the causes of the E001 error code and how to troubleshoot and fix the issue.
1. What Causes the Navien Tankless Water Heater Error Code E001?
From troubleshooting over dozens of these heaters over my 30 year plumbing dareer I have determined that the E001 error code is usually caused by one of the following issues:
- Overheating: If the water in the heat exchanger becomes too hot, it can cause the water to boil, triggering the E001 error code.
- Insufficient water flow: If the water flow to the heater is restricted or too low, it can cause the water in the heat exchanger to become too hot and trigger the E001 error code.
- Ignition issues: If the ignition system is not functioning correctly, it can cause the water to overheat and trigger the E001 error code.
- Gas pressure issues: If the gas pressure to the water heater is too high or too low, it can cause the water to overheat and trigger the E001 error code.
2. How to Troubleshoot the Navien Tankless Water Heater Error Code E001?
Here are some easy troubleshooting steps you can do on your own that hopefully will get you going. If not, then you know something more significant is happening with your Navien.
- Check the water flow: Make sure that the water flow to the heater is not restricted and that the water pressure is within the recommended range.
- Check the temperature setting: Make sure that the temperature setting on the water heater is not set too high. The recommended temperature range is usually between 120°F and 140°F.
- Check the air supply: Ensure the heater’s air supply is not blocked or restricted.
- Check the electrical system: Inspect the electrical connections and wiring to make sure that they are not loose, damaged, or corroded. Also, check the circuit breaker to ensure that it is not tripped or malfunctioning.
- Restart the water heater: Turn off the water heater and wait for a few minutes. Then, turn it back on and see if the error code disappears.
If none of these troubleshooting steps work, you may need to call a professional technician to diagnose and fix the issue.
3. Solutions for Navien Tankless Water Heater Error Code E001
If you have tried the above troubleshooting steps and the E001 error code persists, there are a few other solutions you can try:
- Replace faulty components: If the problem is with a specific component such as the ignition system or circuit board, you may need to replace it.
- Clean the burner: A dirty burner can cause ignition issues, leading to the E001 error code. Clean the burner using a soft brush or compressed air.
- Check the gas pressure: Make sure that the gas pressure to the water heater is within the recommended range. You may need to adjust the gas pressure regulator.
Here are some replacement parts, be sure to check the description on each to make sure it will work on your unit:
4. Importance of Regular Maintenance for Navien Tankless Water Heaters
Regular maintenance is crucial for the proper functioning of Navien tankless water heaters. Performing routine maintenance tasks can prevent issues like the E001 error code. Here are some maintenance tasks that you should perform regularly:
- Clean the water filter: The water filter can become clogged with debris and sediment over time, causing issues
- such as low water flow and overheating. Clean the water filter regularly to ensure that the water flow to the heater is not restricted.
- Flush the system: Over time, mineral buildup can accumulate in the heat exchanger, causing it to overheat and triggering the E001 error code. Flushing the system regularly can prevent mineral buildup and keep the heat exchanger functioning correctly.
- Inspect the venting: Ensure the venting system is free from blockages and debris. Blocked or restricted venting can cause the water heater to overheat and trigger the E001 error code.
- Check the electrical system: Inspect the electrical connections and wiring to ensure they are not loose, damaged, or corroded. Also, check the circuit breaker to ensure it is not tripped or malfunctioning.
- By performing these maintenance tasks regularly, you can ensure that your Navien tankless water heater operates efficiently and reliably.
What does the Navien tankless water heater error code E001 mean?
The E001 error code indicates that water is boiling in the heat exchanger, usually due to overheating, insufficient water flow, ignition issues, or gas pressure issues.
How do I troubleshoot the Navien tankless water heater error code E001?
Some troubleshooting steps you can take include checking the water flow, temperature setting, air supply, and electrical system and restarting the water heater.
Can I fix the Navien tankless water heater error code E001 myself?
If you are comfortable performing basic troubleshooting and maintenance tasks, you may be able to resolve the issue yourself. However, it is best to call a professional technician if you are uncomfortable.
How can I prevent the Navien tankless water heater error code E001 from occurring?
Performing regular maintenance tasks such as cleaning the water filter, flushing the system, inspecting the venting, and checking the electrical system can prevent issues like the E001 error code from occurring.
Is regular maintenance necessary for Navien tankless water heaters?
Yes, regular maintenance is crucial for the proper functioning of Navien tankless water heaters. You can prevent issues by performing routine maintenance tasks and ensure that your water heater operates efficiently and reliably.
Conclusion
The Navien tankless water heater error code E001 can be frustrating. Still, it is usually caused by one of a few common issues, such as overheating, insufficient water flow, ignition issues, or gas pressure issues. Following the troubleshooting steps and solutions outlined in this article, you can usually resolve the issue and restore your water heater. Remember to perform regular maintenance tasks to prevent the problems like the E001 error code from occurring in the future.
