Rinnai Error Code L c

Fault Code L c: Scale Build-up in Heat Exchanger (when L c checking maintenance code history,#”00″ is substituted for “LC”)

Rinnai Error Code L c

Fault: Scale Build-up in Heat Exchanger (when L c checking maintenance code history,#”00″ is substituted for “LC”)


Applies to: Rinnai Demand Duo R Series Units.

Your Rinnai continuous flow water heater has a self diagnostic capability. If a fault occurs, an error code will flash on the digital monitor (if you have water controllers) or status monitor (selected models only). This assists with diagnosing the fault.
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