This error means your Navien water heater has detected a problem that prevented normal operation. Read below for the cause and fix.
Similar to E001 but indicates repeated ignition attempts failed. Common causes: faulty igniter electrode, dirty flame sensor, gas pressure too low, or defective gas valve.
Do not attempt to reset repeatedly. Call Simple Water Heater & Filtration for prompt Navien diagnosis throughout Los Angeles.
To reset your Navien after E003: press and hold the power button for 3 seconds until the unit powers off, then press again to restart. Important: if the error code returns after reset, the underlying problem has not been resolved and the unit needs professional repair.
Call Simple Water Heater & Filtration if:
We are factory-trained on Navien and provide repair service throughout Los Angeles, the San Fernando Valley, Westside LA, and Ventura County.
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