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Troubleshooting · NavienNavien NWP500S065AUMB E798Abnormal appliance control operation→ Troubleshooting · NavienNavien NWP500S050AUMB E901Abnormal sensor or control operation→ Troubleshooting · NavienNavien NWP500S050AUMB E326Dry fire condition→ Troubleshooting · NavienNavien NWP500S050AUMB E743Abnormal temperature sensor or system control operation→ Troubleshooting · NavienNavien NWP500S065AUMB E097Abnormal lower electric heater operation→ Troubleshooting · NavienNavien NWP500S050AUMB E480Tank temperature sensor issue→ Troubleshooting · NavienNavien NWP500 Series E096: Abnormal upper electric heater operationTroubleshooting code E096→ Troubleshooting · NavienNavien NWP500 Series E097: Abnormal lower electric heater operationTroubleshooting code E097→ Troubleshooting · NavienNavien NWP500 Series E326: Dry fire conditionTroubleshooting code E326→ Troubleshooting · NavienNavien NWP500 Series E407: Hot water outlet temperature sensor issueTroubleshooting code E407→ Troubleshooting · NavienNavien NWP500 Series E445: Abnormal mixing valve operationTroubleshooting code E445→ Troubleshooting · NavienNavien NWP500 Series E480: Tank temperature sensor issueTroubleshooting code E480→