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Navien Navien NPE-A2 Series E782: Abnormal operation: front/main panel communication Troubleshooting · NavienNavien NPE-A2 Series E782: Abnormal operation: front/main panel communicationTroubleshooting code E782 Navien Navien NPE-A2 Series E785: Abnormal operation: flow switch or sensor Troubleshooting · NavienNavien NPE-A2 Series E785: Abnormal operation: flow switch or sensorTroubleshooting code E785 Navien Navien NPE-A2 Series E788: Incorrect gas type setting Troubleshooting · NavienNavien NPE-A2 Series E788: Incorrect gas type settingTroubleshooting code E788 Navien Navien NPE-S2 Series E003: Ignition failure Troubleshooting · NavienNavien NPE-S2 Series E003: Ignition failureTroubleshooting code E003 Navien Navien NPE-S2 Series E004: False flame detection Troubleshooting · NavienNavien NPE-S2 Series E004: False flame detectionTroubleshooting code E004 Navien Navien NPE-S2 Series E012: Flame loss Troubleshooting · NavienNavien NPE-S2 Series E012: Flame lossTroubleshooting code E012 Navien Navien NPE-S2 Series E016: Heat exchanger overheat Troubleshooting · NavienNavien NPE-S2 Series E016: Heat exchanger overheatTroubleshooting code E016 Navien Navien NPE-S2 Series E030: Exhaust overheat Troubleshooting · NavienNavien NPE-S2 Series E030: Exhaust overheatTroubleshooting code E030 Navien Navien NPE-S2 Series E031: Burner overheat Troubleshooting · NavienNavien NPE-S2 Series E031: Burner overheatTroubleshooting code E031 Navien Navien NPE-S2 Series E046: Abnormal operation: heat exchanger limit or thermistor Troubleshooting · NavienNavien NPE-S2 Series E046: Abnormal operation: heat exchanger limit or thermistorTroubleshooting code E046 Navien Navien NPE-S2 Series E047: Exhaust thermostat or thermistor open/short Troubleshooting · NavienNavien NPE-S2 Series E047: Exhaust thermostat or thermistor open/shortTroubleshooting code E047 Navien Navien NPE-S2 Series E060: Abnormal operation: dual venturi Troubleshooting · NavienNavien NPE-S2 Series E060: Abnormal operation: dual venturiTroubleshooting code E060