NTI Error Lockout 109: Ignition Failure Occurred
On Trinity Lx (and other Sola-controlled NTI models), the burner failed to ignite and the control locked out. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
On Trinity Lx (and other Sola-controlled NTI models), the burner failed to ignite and the control locked out.
NTI 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 NTI error Lockout 109
- Faulty spark igniter or incorrect igniter gap
- Spark cable or igniter ground wire disconnected
- Insufficient gas pressure or a closed gas shutoff valve
- Faulty spark generator or gas valve
What you can safely check
- If you smell gas, leave and call FortisBC 1-800-663-9911 first.
- Confirm gas is on (other appliances work)
- Note the exact code and your model — and don’t keep resetting; book a diagnosis.
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.
Error Lockout 109 usually leaves you without heat or hot water and can indicate a safety-related fault. Don't keep resetting it — call for priority after-hours NTI repair.
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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 NTI error Lockout 109
Genuine NTI parts we supply and professionally install — never for DIY.
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NTI Error Lockout 109 Repair Across Metro Vancouver
Related NTI Ignition & Flame Codes
Frequently Asked Questions
Fix NTI Error Lockout 109 Today
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