On a Rinnai Tankless Water Heater, error code 10 typically indicates problems such as a full condensate trap or obstructions in the air supply and exhaust. To resolve this error, first ensure that there are no obstructions in the air supply and exhaust systems.
A blocked fan, incorrect high-altitude settings, obstructions in the internal air filter, or a check valve stuck between the fan casing and the burner body are all possible causes of error code 10. We will walk you through each of these methods to help you troubleshoot and remove diagnostic code 10.
Causes of Rinnai Error Code 10.
There are various causes for the code 10:
- The ventilation system is clogged.
- The ventilation is fitted incorrectly.
- The lengths, materials, clearances, and type of venting are not specified.
- Pollutants were identified in the ventilation system.
- A sensor has failed.
- The dip switch is not set correctly.
- The fan blower has broken or become clogged.
- The check valve has failed to function.
- Condensate buildup and choked lines.
- The pressure in the gas line is wrong.
- The high altitude option is incorrectly configured.
- The PC board is malfunctioning.
Before attempting to repair or replace any malfunctioning parts, try to reset the device by turning it off and then back on. This simple step may solve the problem. If this doesn’t work, try the troubleshooting methods listed below or contact a plumber or a specialist for assistance.
Also, Read: How to Vent A Tankless Water Heater Properly
Troubleshooting of Rinnai Tankless Water Heater Code 10.
Condensate Line Gets Blocked.
The Rinnai tankless water heater has a condensate pipe that drains the condensate produced during operation. If this pipe becomes clogged with dirt or debris, the condensate cannot flow through the system, resulting in the display of error code 10 on your water heater. Another possibility is that the condensate trap is completely full.
Solution.
Condensate lines should be cleaned and inspected on a regular basis. Ascertain that the drain’s outlet is exposed to the outside environment and that condensate flows smoothly through the pipe. If the condensate trap becomes full, empty it using the lower condensate drain outlet on the appliance.
Clogged Air Filter.
To keep an indoor Rinnai tankless water heater in good working order, check the air filter for any blockages on a regular basis. If the controller becomes clogged with lint or dust, error code 10 will be displayed.
Solution.
- It is critical to keep the Rinnai tankless water heater’s air filter clean and debris-free in order for it to function properly. To clean the air filter, follow these steps:
- Begin by turning off the water heater by pressing the “on/off” button on the right side of the controller.
- Remove the device’s air filter next.
- Clean the air filter as soon as possible by gently rubbing it with a soft-bristle brush and a small amount of mild dish soap. Clean thoroughly and remove any dirt or debris. Rinse the air filter with clean water after cleaning.
- Use a lint-free towel to dry the Air Filter.
- Tighten the nuts to secure the front panel once the air filter has been replaced.
- Finally, turn on the tankless water heater again.
Also, Read: Troubleshooting Rinnai Error Code 11 In Taknless Water Heater.
Combustion Air And Exhaust Vents Blocked.
Adequate airflow is required for a gas tankless water heater to ignite properly. It’s critical to keep snow, debris, and other materials away from the combustion air vents because they can prevent air from entering. If these issues arise, your water heater may display error code 10. Similarly, if the exhaust vents become clogged, you may experience similar problems.
Solution.
Inspect the vent system of your tankless water heater on a regular basis for any obstructions such as dirt, debris, or snow. If you discover any blockages that could lead to dust accumulation, make sure to clear them from the venting line.
Vent Length Is Not Limited.
It is critical to have the proper vent length and venting connection to ensure your tankless water heater operates properly. If the vent length is too long or the pipe is not properly installed, diagnostic code 10 will be triggered.
Clogged Fan.
When the fan in your Rinnai Tankless Water Heater becomes obstructed by dirt, insects, or debris, error code 10 will appear. If the fan wheel, housing, or air duct become clogged, the tankless unit may display error code 10.
Solution.
After removing the fan motor, inspect the fan housing, wheel, and air duct for any obstructions. If you notice any, please do not hesitate to clean them. Utilize a bristle brush to remove debris and dust from these areas.
Dirty Heat Exchanger Fins.
Inspect the heat exchanger’s copper fins for debris buildup. When the fins become clogged, it can restrict airflow, potentially resulting in Rinnai code 10. This issue can also be caused by a clogged heat exchanger or a dirty burner.
Solution.
To remove dirt and debris from the burner and heat exchanger fins, please obtain an air compressor with a maximum pressure capacity of 120 PSI. Wear safety glasses and a mask when cleaning the burner with compressed air. If cleaning the heat exchanger adequately with compressed air proves impossible, it is recommended that it be replaced.
Conclusion.
All potential causes of error code 10 have been addressed. Once you’ve resolved these issues, you can clear the error message. If the error code persists after attempting the previously mentioned troubleshooting steps, it is best to contact a qualified plumber for assistance in resolving the issue.
FAQ.
What is the meaning of code 10 on a tankless water heater?
An error code 10 on a Rinnai system usually indicates a problem with the air intake or a blocked chimney. To begin troubleshooting, turn the system off and on to see if the error code disappears. If the problem persists, carefully inspect the vent system for any obstructions or issues that may be impeding proper airflow.
