Laars Error 109: Ignition Failed Lockout
The NeoTherm control did not prove flame during the ignition trial and has gone to a lockout. No heat until the cause is fixed and it is reset. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The NeoTherm control did not prove flame during the ignition trial and has gone to a lockout. No heat until the cause is fixed and it is reset.
Laars 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 Laars error 109
- Insufficient gas supply or low gas pressure
- Worn or fouled ignition electrode / flame rod
- Dirty burner or poor flame-detector positioning
- Faulty ignition transformer or gas valve
- Failed control module
What you can safely check
- Make sure gas is turned on and other gas appliances are working
- Check the air intake / vent terminal outside is clear, then press reset once
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 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 Laars repair.
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Parts often behind Laars error 109
Genuine Laars parts we supply and professionally install — never for DIY.
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Laars Error 109 Repair Across Metro Vancouver
Frequently Asked Questions
Fix Laars Error 109 Today
Licensed Laars diagnosis and repair with genuine parts — same-day and after-hours across Greater Vancouver.
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