Navien E003: what it means and when to call a pro · United States
Severity: Stop and call a proNavien water heater error E003. The water heater failed to ignite because no flame was detected, and it has locked out as a safety measure.
Smell gas? Leave the building and call the gas emergency number: 911
Meaning
The water heater failed to ignite because no flame was detected, and it has locked out as a safety measure.
Severity
Stop and call a pro
Stop. Switch it off and call a pro
Steps are not shown for this code because no qualified person has reviewed them yet. What is safe: switch it off, follow the Do not list and call a pro.
Source
Manufacturer documentation not yet linked
The repair: Water heater repair
Prices for repairs in United States are in USD.
Other Navien codes
- Navien E016 The water heater overheated and the safety thermostat cut it out.
Brands in our catalog for water heater: Navien, Rinnai. The same code on another brand is not in the catalog yet, and we do not guess what it means.