Rinnai

11 Rinnai Water Heater Code 11 means the heater tried to ignite and failed.<br>The igniter clicked, gas … 12 Rinnai Water Heater Code 12 is the mid-cycle flame loss code — ignition succeeded, the unit was … 13 Rinnai Water Heater Code 13 is a combustion fan fault — the fan that pushes exhaust through the vent …