Navien Boiler Error Codes

Navien is a leading manufacturer of condensing tankless water heaters and combi boilers. Their systems are known for high efficiency and advanced diagnostic capabilities. When a Navien boiler detects an issue, it displays an error code on the control panel to help identify the problem.

Most Navien error codes indicate safety shutdowns that require professional diagnosis and repair. Do not attempt to override error codes or bypass safety features.