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Navien Error Code 003 zoodesignmelb . What does e 003 mean on a navien tankless water heater? An open or shorted sensor causes the navien error code e441. Navien Npe 240A Error Code 003 360designsnyc from 360designsnyc.blogspot.com An open or shorted sensor causes the navien error code e441. Will call navien but thought to put it on heating. I just installed a navien ncb 210 e and about every fourth day, in the morning it throws a 003 error.

Navien Npe 240A Error Code 003 360designsnyc . Hydro coil in the airhandler bursted. Error code 16 is over heat exchanger over heating. Navien CH240 knocking/banging noise — Heating Help The Wall from forum.heatinghelp.com I replaced the flame rod and pcb board and am still getting the error. My navien ch240 unit keeps getting the 12e error and shutting down. Navien a day keeps mikey pipes away!