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Navien Appliance Error Codes & Fix Guides
Pick your Navien appliance. Each section has the complete verified error code list for that appliance plus step-by-step fix guides for its most searched codes.
Navien Water Heater
Navien Water Heater Error Codes List: Every Code ExplainedNavien Error Code E003: Ignition Failure — Meaning, Causes & FixNavien Error Code E110: Exhaust Blockage — Meaning, Causes & FixNavien Error Code E012: Flame Loss — Meaning, Causes & FixNavien Flow, Pump & Recirculation Error Codes (421, 438, 517): Meaning & FixesNavien Fan, Sensor & Electronics Error Codes (109, 127, 762, 773): Meaning & FixesNavien Water Heater Reset: How to Reset & Clear Error CodesNavien Water Heater hub