A. O. Smith Error E01 / 11: Ignition Failure
The burner failed to ignite after multiple (typically three) attempts, so the unit locks out. Displayed as E01 on alphanumeric models or code 11/111 on numeric-display models. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The burner failed to ignite after multiple (typically three) attempts, so the unit locks out. Displayed as E01 on alphanumeric models or code 11/111 on numeric-display models.
A. O. Smith fault codes can vary by model and series. Use this as a guide — the same code can have more than one cause. Our Technical Safety BC–licensed technicians read the code, confirm it against your unit's manual, and diagnose the true cause before any repair.
Likely causes of A. O. Smith error E01 / 11
- Gas supply off, undersized, or low pressure (NG min ~3.5" WC)
- Dirty or carbon-fouled flame rod
- Igniter electrode gap out of spec (3–4 mm) or failed igniter
- Restricted air intake or inlet gas filter screen
- Closed manual gas valve or LP tank empty
What you can safely check
- Confirm the gas supply valve is fully open and the LP tank is not empty
- Verify other gas appliances run normally
Beyond these checks, do not open the unit or touch gas/electrical parts — BC law requires a licensed gas fitter. Call us for a proper diagnosis.
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For your safety and to keep your manufacturer warranty valid, BoilerPart.ca does not sell loose boiler parts over the counter or for self-installation. Under BC regulations, gas appliance components must be installed by a licensed gas fitter. Every part we source is genuine OEM and is professionally fitted, tested, and certified by our Technical Safety BC–licensed technicians as part of a complete repair or installation.
Parts often behind A. O. Smith error E01 / 11
Genuine A. O. Smith parts we supply and professionally install — never for DIY.
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All work is completed by Technical Safety BC–licensed gas fitters (Licence LGA0043870, Boiler Permit LBP0046450). We are fully licensed, bonded and insured for your protection.
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A. O. Smith Error E01 / 11 Repair Across Metro Vancouver
Related A. O. Smith Ignition & Flame Codes
Frequently Asked Questions
Fix A. O. Smith Error E01 / 11 Today
Licensed A. O. Smith diagnosis and repair with genuine parts — same-day and after-hours across Greater Vancouver.
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