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What are the most common Navien error codes?

Alton Alexander
By Alton AlexanderUpdated on September 6th, 2022

Navien error codes are displayed on the control panel when there is an error with the Navien system. There are many different error codes, each with a different meaning.

The most common error code is Navin Error Code E04, which means that there is a problem with the water supply. This error code can be caused by a variety of things, such as a water line that is not connected properly or a water pressure that is too low.

Other common error codes include Navien Error Code E05, which means that the system is not heating properly, and E06, which means that the system is not cooling properly.

If you see a Navien error code, it is important to troubleshoot it quickly and if necessary then call a qualified technician to come and take a look at the system. Trying to fix the problem yourself can often make it worse, so it is best to leave it to the professionals.