- Error Info
Need help with the Navien system? Let's get in touch
Error codes are your Navien system’s way of identifying specific issues. Each code points to a precise problem that requires accurate diagnostics and proper repair. Our specialists quickly interpret these codes to restore safe, efficient operation.
Got a Navien Error Code? Let’s Fix It Fast.
E003 – Ignition Failure
Usually caused by gas supply issues, a dirty igniter, or a faulty flame sensor.
E012 – Flame Loss
Often due to air intake blockages or gas pressure fluctuations.
E110 – Abnormal Air Pressure
Typically indicates a clogged air intake filter or an obstruction in the exhaust vent.
E016 – Overheating
Commonly caused by mineral buildup (scale) in the heat exchanger requiring a professional flush.
E030 – Exhaust Overheating
May occur when the heat exchanger is dirty or the venting system is restricted.
E515 – PCB (Main Control Board) Error
An internal electronic fault that may require a system reset or board replacement.
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