2022 Updated video here:    • How to fix Rinnai RL94 Tankless Water...  

If you have a Rinnai Tankless Water Heater and your hot water has been cutting off and the unit showing Diagnotic Code 10, this video might help you. My RL94I had dead moths, dust and debris inside the fan cage which was causing my system to overheat and display Diagnostic Code 10. This will show how to gain access to the fan to clean it out. I carefully rinsed the fan cage under a faucet and blew out with a compressed air nozzle. I had already fixed my heater and this video recreates the steps I took to solve my issue. As a result, my system fan is much quieter now.

Here is a link to the other video I found covering the same issue, but on another model.    • HOW TO | Servicing a Rinnai Tankless ...