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Navien water heater repair
In-home repair for Navien water heaters across Auburn, Opelika and Lee County. Below are the 11 Navien error codes we see most, with what each one means.
On the display
Navien water heater error codes
| Code | Meaning | Fix it yourself? | |
|---|---|---|---|
| E003 | Ignition failure | ||
| E004 | False flame detection | ||
| E012 | Flame loss | ||
| E016 | Heat exchanger overheating | ||
| E030 | Exhaust overheating | ||
| E109 | Fan motor fault | ||
| E110 | Vent blockage | ||
| E407 | Outlet temperature sensor fault | ||
| E421 | Inlet temperature sensor fault | ||
| E439 | Flow sensor fault | ||
| E515 | Control board fault |
What we fix
Common Navien water heater repairs
- Heating element replacement~50 min
- Thermostat replacement~40 min
- Anode rod replacement~40 min
- Thermocouple / gas valve replacement~60 min
- Tank flush and descaling~60 min
- Tankless descaling service~75 min
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