Temperature and overheating codes, including Rinnai 14 and 16, or Noritz 16, typically arise from scale buildup within the heat exchanger, restricted water flow, or aging temperature sensors.
Rinnai Code 10: Blocked Air Intake Rinnai Code 10 indicates blocked air intake, preventing the proper air-to-fuel mixture necessary for clean combustion. This blockage can occur at the exterior vent ...
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