Rinnai fault code 12 troubleshooting. The Rinnai error code 12 in relation to your continuous flow hot water system indicates that there is either a flame failure or a low gas flow. Oct 18, 2017 – Hi there. This is probably not
Rinnai Continuous Flow Hot Water Heater Fault or Error Code 11 Troubleshooting Guide. The good news about the Rinnai continuous flow hot water heaters are that they provide you with a fault code should something become amiss with your system. Troubleshooting Rinnai.