Troubleshooting Steps. Check the Air Supply: Confirm that the air intake isn't blocked and has proper ventilation.; Inspect the Gas Line: Ensure the gas valve is open and there's adequate pressure.; Examine the Igniter: Clean or replace the igniter if necessary.A clean surface improves functionality. Assess Electrical Connections: Tighten any loose connections.. Rinnai Code 11 - What to Do and How to Fix? Leave a Comment / Water Heating / By James Ferguson Rinnai is one of the most reputable manufacturers of tankless water heaters.
RINNAI TANKLESS - Prices have dropped and there are decent deals to be had now! Our prices verses the exact same model at Homedepot.ca RUR199iN - $2,899 - Nat Gas Compare at $3853 - SAVE $954. By following these steps and conducting thorough troubleshooting, you can effectively address Rinnai Code 11 and resume the smooth operation of your tankless water heater. Conclusion. In summary, addressing Rinnai Code 11 involves a systematic troubleshooting approach encompassing several key steps.