Navien tankless water heaters are known for their energy efficiency and long-lasting performance. However, like all appliances, they can experience problems over time. One of the most common issues with Navien water heaters is error code 515-09, which indicates an abnormal PCB (printed circuit board) error. In this comprehensive guide, we’ll explain what causes this error, and provide step-by-step instructions on how to troubleshoot and fix it.
When your Navien water heater displays error code 515-09, it means that there is an issue with the PCB board. This can be caused by a range of factors, such as power surges, wiring problems, or simply wear and tear over time. The good news is that this error is usually fixable, and you can often resolve it yourself without needing to call in a professional.
According to Reddit users who have experienced this error, there are several steps you can take to fix it. Here’s a summary of the most common solutions:
- Check the wiring connections: Ensure that all the wiring connections to the PCB board are secure and not loose. This is the most common cause of this error.
- Clean the water filter: A clogged water filter can also cause this error. Turn off the power to the unit, remove the filter, and clean it thoroughly before reinstalling.
- Check the fan motor: In some cases, a faulty fan motor can cause this error. Check the motor to ensure that it’s working correctly.
- Replace the PCB board: If none of the above solutions works, you may need to replace the PCB board. This is a more complex solution and may require professional assistance.
Now that you have an overview of the solutions to this error, let’s dive into the step-by-step guide to fixing it.
Step 1: Turn off the power to the unit
Before you begin any troubleshooting, ensure that the power to the Navien water heater is turned off. This will help prevent any accidents or further damage to the unit.
Step 2: Check the wiring connections
The first step in troubleshooting this error is to check the wiring connections to the PCB board. Start by removing the front cover of the unit and locating the PCB board. Check all the wiring connections to ensure that they’re secure and not loose. If you find any loose connections, tighten them using a screwdriver.
Step 3: Clean the water filter
If the wiring connections are all secure, the next step is to check the water filter. Turn off the water supply to the unit, and then turn off the power. Locate the water filter and remove it from the unit. Clean it thoroughly using a soft brush or cloth, and then reinstall it.
Step 4: Check the fan motor
If the above solutions don’t work, the next step is to check the fan motor. This is located near the PCB board. Check the motor to ensure that it’s running smoothly and not making any strange noises. If the motor is faulty, you may need to replace it.
Step 5: Replace the PCB board
If none of the above solutions works, the last resort is to replace the PCB board. This is a more complex solution and may require professional assistance. Contact a qualified technician or Navien customer service for assistance.
If you’re experiencing Navien error code 515-09, don’t worry. You can troubleshoot and fix the issue by following some simple steps. Here are the solutions to help you troubleshoot and fix Navien error code 515-09:
Check the PCB Connection
The first thing you should do when you encounter Navien error code 515-09 is to check the PCB connection. Sometimes, loose or damaged connections between the PCB and other components can cause this error code to appear. To check the connection, follow these steps:
- Step 1: Turn off the water heater and disconnect the power supply.
- Step 2: Open the front cover of the unit and locate the PCB.
- Step 3: Check all the connections between the PCB and other components such as the igniter, flame rod, and sensors.
- Step 4: If you notice any loose or damaged connections, try to reconnect them or replace them if necessary.
Check the PCB
If checking the connections doesn’t fix the issue, the next step is to check the PCB itself. Overheating or physical damage to the PCB can. To sum up, Navien Error Code 515-09 is a serious issue that needs to be resolved immediately. The error is caused by a problem with the printed circuit board (PCB), and it can result in a complete system shutdown. If you encounter this error, you should take immediate steps to troubleshoot it.
In this article, we have covered all the possible solutions to Navien Error Code 515-09 that you can try. We have also provided detailed instructions for each solution, and by following these steps, you should be able to resolve the issue and get your Navien tankless water heater back up and running in no time.
If none of the solutions mentioned in this article work, you should contact a certified Navien technician to diagnose and fix the problem. Trying to fix the issue yourself without proper knowledge and training can be dangerous and can result in more serious damage to your system.
We hope this article has been helpful in resolving your Navien Error Code 515-09 issue. Don’t forget to share your feedback with us in the comments section below.
Frequently Asked Questions
Navien error code 515-09 indicates an abnormal PCB error. This means that there is an issue with the printed circuit board, which controls the unit’s functions. Navien Error Code 515-09: How to Troubleshoot and Fix It
Several factors can cause Navien error code 515-09 to appear on your tankless water heater’s digital display. Some of the most common causes of this error code include:
- Power surge or outage
- Loose or damaged PCB connections
- Faulty PCB
- Overheating or malfunctioning parts
- Wiring issues