Rinnai Tankless Water Heater & Boiler Error Codes:

If you're experiencing any of these issues or error codes, its time to get your Rinnai boiler serviced.

• Code 10: Indica the air intake or exhaust system. It can be causeincorrect vent pipe length or installation, issues with the fan, or problems with combustion.
• Code 11: Failure to ignite. Potential causes include an insufficient gas supply, a faulty igniter, issues with the gas valve, or incorrect gas pressure.
• Code 12: Unit ignites but the flame is lost. D supply, a dirty or faulty flame rod, venting issues, or internal component failure.
• Code 14: The unit has detected an excessively high temperature and the thermal fuse has tripped as a safety measure. This can result from restricted airflow, scale buildup on the heat exchanger, or a malfunctioning temperature sensor.
• Code 16: Water temperature exceeding safe limits. It can be triggered by insufficient water flow, a scaled heat exchanger, or issues with temperature sensors.
• Code LC (LC0-LC9): Buildup of limescale within the heat exchanger. This is particularly common in areas with hard water and can significantly impact the unit's efficiency and lifespan. Regular descaling maintenance is crucial to prevent this.
• Code 31: Problem with the burner sensor or an overheating condition related to the burner
• Codes 32: Sensor that measures the temperature of the water leaving the unit. The sensor may be faulty, disconnected, or affected by scale
• Codes 61: This code indicates a malfunction with the fan responsible for providing air for combustion or for venting exhaust gases. The fan motor might be seized, obstructed, or have an electrical issue.

Maintenance: Regular annual maintenance is key to ensuring your boiler is in good working condition. It's the work horse of you home. It must be properly serviced in order for your Rinnai tankless water heater to function optimally.