Navien E351 Error Code

How to resolve Navien E351 Error Code

A Navien water heater can stop working and show an error code 351, you get Navien E351 Error Code if the water level is low. Normally, these systems will automatically refill themselves. However, in some cases, the 351 error could be caused by a frozen auto feeder valve, a closed cold water valve, or a […]