Navien error codes and what they mean · Israel
All 2 Navien fault codes in one table: what each one means, how serious it is and when to call a pro.
| Code | Appliance | What it means |
|---|---|---|
| E003 | water heater | The water heater failed to ignite because no flame was detected, and it has locked out as a safety measure. |
| E016 | water heater | The water heater overheated and the safety thermostat cut it out. |
Appliance fault codes by brand
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