Baxi Error E128: Loss of flame during operation
The boiler lit successfully but then lost the burner flame during operation, repeatedly enough to trigger a lockout. On the Luna Duo-Tec this is code 128 'Loss of flame.' We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The boiler lit successfully but then lost the burner flame during operation, repeatedly enough to trigger a lockout. On the Luna Duo-Tec this is code 128 'Loss of flame.'
Baxi 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 Baxi error E128
- Inadequate or fluctuating gas pressure / supply
- Dirty or damaged flame-sensing electrode or loose wiring
- Flue gas recirculation or condensate backing up (e.g. frozen condensate pipe)
- Incorrect combustion (gas valve / venturi) settings
- Faulty PCB
What you can safely check
- Confirm other gas appliances work (gas supply is on)
- In cold weather, check the external condensate pipe is not frozen
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 E128 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 Baxi repair.
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Parts often behind Baxi error E128
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Baxi Error E128 Repair Across Metro Vancouver
Related Baxi Ignition & Flame Codes
Frequently Asked Questions
Fix Baxi Error E128 Today
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