Learn about Rinnai Error Code 72, its meaning, potential causes, and solutions for troubleshooting.
Error Code 72 typically indicates a fault with the flame rod in the system. This can affect the heating performance.
To troubleshoot, inspect the flame rod for damage or dirt. Cleaning or replacing it may resolve the issue.
Error 72 typically indicates a fault with the flame rod or flame sensor, which is crucial for detecting the presence of a flame during operation. The flame rod generates a small voltage when exposed to the flame, signaling to the control board that combustion is occurring. If the control board does not receive this signal, it will trigger Error 72 as a safety protocol to prevent gas accumulation and potential hazards. This fault can also arise from issues in the electrical connections or gas supply, leading to improper combustion conditions.
When the Rinnai unit displays Error 72, users may observe a steady flashing LED indicator on the control panel. Additionally, the hot water supply may be interrupted, and there may be no ignition sound when the system attempts to heat water. If monitored via an app, alerts may indicate a failure in the ignition process.
Always ensure that any troubleshooting or repairs are conducted by a licensed electrician or certified solar installer to adhere to safety standards and regulations.
To avoid encountering Error 72 in the future, schedule regular maintenance checks on the Rinnai unit, including cleaning the flame rod and inspecting the gas supply and venting systems. Additionally, ensure that any electrical connections remain tight and corrosion-free by periodically checking them during service intervals.