Navien

E110 Navien Tankless Water Heater Navien E110 is an abnormal air-pressure fault — the unit ran its pre-fire … E030 Navien Tankless Water Heater Navien E030 means the exhaust (flue gas) temperature sensor saw the vent gases … E760 Navien Tankless Water Heater Navien E760 means the front display panel and the main control board (PCB) have … E016 Navien Tankless Water Heater Navien E016 is an over-temperature shutdown — the heat exchanger or outlet got … E012 Navien Tankless Water Heater Navien E012 means the flame was established and then dropped out mid-cycle — the … E060 Navien Tankless Water Heater Navien E060 means the air pressure sensor — the part that confirms the … E004 Navien Tankless Water Heater Navien E004 is a false-flame error: the flame-sensing rod is reporting a flame … E027 Navien Tankless Water Heater Navien E027 means the leak-detection sensor in the bottom of the unit found … E422 Navien Tankless Water Heater Navien E422 is a flow-sensor fault — the little turbine wheel that measures how … E003 Navien Tankless Water Heater Navien E003 means ignition failure — the unit asked for heat, opened the gas …