Navien Error Code E003
Ignition Failure
Call 778-909-5731 NowError code E003 indicates that your Navien boiler attempted to ignite but failed. The system tried multiple times to light the burner but did not detect a flame. As a safety measure, the boiler has shut down and will not attempt to restart until the issue is resolved.
No. Your boiler has shut down for safety. Do not attempt to repeatedly restart the unit or override the error code. Ignition failures can indicate gas supply issues, electrical problems, or component failures that require professional diagnosis.
- Gas supply issue: Gas valve closed, low gas pressure, or empty propane tank
- Igniter problem: Faulty igniter or ignition electrode
- Flame sensor: Dirty or failed flame sensor
- Gas valve failure: Malfunctioning gas valve
- Venting issue: Blocked vent preventing proper combustion
- Verify the gas supply valve is fully open
- Check if other gas appliances in your home are working
- If you have propane, check tank level
- Verify the boiler has power
STOP HERE
Do not attempt to clean components, adjust settings, or disassemble any part of the boiler. These actions require professional training and tools.
Navien E003 requires professional diagnosis and repair. Our licensed technicians serving Greater Vancouver can:
- Test gas pressure and gas valve operation
- Inspect and test ignition components
- Clean or replace flame sensor
- Check venting system for blockages
- Safely restore your heating system