CRITICALError Code
E003: Ignition Failure (Boiler)Emergency Diagnosis & Repair
Boiler failed to ignite burner after multiple attempts and locked out.
What This Error Code Means
Ignition sequence did not complete, preventing the boiler from firing.
Common Causes
Gas supply valve closed
Low gas pressure
Failed ignitor electrode
Gas valve not opening
Flame sensor failure
Affected Brands
NavienViessmannWeil-McLainBuderusLochinvar
How ROMA Heating Fixes This Error Code
Verify gas supply and pressure
Inspect ignitor electrode
Clean flame sensor
Check gas valve operation
Reset and test ignition sequence
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