This error means your Navien water heater has detected a problem that prevented normal operation. Read below for the cause and fix.
The recirculation pump flow sensor is not detecting adequate flow. Common causes: failed pump, stuck flow sensor, or air in the recirculation line.
Do not attempt to reset repeatedly. The recirculation pump or sensor likely needs replacement. Call us for prompt Navien repair.
To reset your Navien after E028: 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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