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Process orders Monday – Friday from 8 a.m. to 8 p.m. EST Ship from 8:00 a.m. to 6:30 p.m. EST Online ordering – Rinnai Parts Store 24/7 Warranty Department Available in office from 8 a.m. to 5 p.m. EST, Monday- Friday Technical Support Department –...
Heat exchanger flush procedure. The Rinnai SENSEI™ N - Series water heaters include a service indicated / reminder. When selected in the parameter settings an “SS” code will display on the controller indicating it is time to flush and service the water heater. Failure to service the appliance may cause damage to the heat exchanger.