Check for the proper drainage of the condensate (condensing type).Check for water leaking and excessive moisture as it can lead to corrosion and wet electrical connections.Proper dip switch and gas pressure set up for the high altitude installations.Check the venting system (both intake and exhaust) for blockage.For example, incomplete combustion (not enough fresh air or blockage) leads to incomplete combustion (yellow/red flame instead of blue) and carbon buildup on the flame rods. Always look for the manufacturer's instructions for the correct vent installation, the recommended material, size, length, and proper clearance around the vent.Inspect the flame rod for debris and dirt - clean as needed and replace if there are cracks.Ensure that the flame rod is located correctly and installed tightly in its mounting bracket.Make sure that there is no loose connection in the wiring of the flame rod(s) and that the wiring is plugged into the correct rod.Inspect the igniter and if there is a carbon or scale buildup clean as instructed by the manufacturer.When installing a new element, make sure to install a new gasket too. A loose rod can cause no sparks or create a short if it touches other metal components. The igniter and its ceramic insulation must be securely tightened to the mounting bracket and in the correct position.Verify the correct voltage on the electric board when the unit is in the ignition cycle. If there is no spark, look for the loose, bad, or no connection and the damaged element. Test the unit's igniter for proper work by cycling the unit and checking if there is a spark.Note: As extensive knowledge and skills are needed for any gas work, including the gas license possession, the best is to contact a licensed technician. Ensure that the air is removed (purged) from the gas lines after the installation.There are several causes for the improper gas pressure the gas system was not correctly sized (the manufacturer specs were not met), dirt and debris are present in the system. There must be a proper gas pressure and according to the rating plate.The dip switch on the electronic board must be set for the correct gas type. The gas type must be according to the rating plate found on the unit.Make sure that there is no interruption in the gas supply to the water heater.Combustion chamber with the ignition rods.Gas installation with the gas regulator.Here is the summary of what can go wrong with your Rinnai water heater and what to look for after the error code 11 shows up on the remote controller. Check out for possible causes that generate the error code 11 on the digital display of the heater, and explore potential solutions. The installation is not proper and complete until the operation of the converted appliance is checked as specified in the manufacture’s instructions supplied with the kit.How to troubleshoot and repair Rinnai water heaters when there is no ignition, followed by the error code 11. The qualified service agency is responsible for the proper installation of this kit. If the information in these instructions is not followed exactly, a fire, explosion or production of carbon monoxide may result causing property damage, personal injury or loss of life. This conversion kit shall be installed by a qualified service agency in accordance with the manufacture’s instructions and appliance codes and requirement of the authority having jurisdiction. Output efficiency is 80% of rated input for Canadian installations.Heaters may be converted from one gas to another using Rinnai conversion kits.The minimum inlet gas supply pressures is for the purpose of input adjustment.Locate orifices at burner end of gas tubes. Caution the gas supply shall be shut off prior to disconnecting the electrical power, before proceeding with the conversion. Conversion kit are included in the carton box. Front panel must be removed to access internal parts. Conversion kit shall be installed by a qualified service agency. The appliance shall only be converted to a gas for which it has been approved. The conversion shall be carried out in accordance with the requirements of provincial authorities having jurisdiction and in accordance with the requirements of the CAN1-B149.1 and 2 installation code.
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