Dunkirk Error E00: Flame detected on start-up
The control sensed a flame signal before ignition should have occurred (flame present at start-up). This is a safety lockout because it can indicate a gas valve leaking through or a false flame signal. Display shows 'E00'; manual RESET required. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The control sensed a flame signal before ignition should have occurred (flame present at start-up). This is a safety lockout because it can indicate a gas valve leaking through or a false flame signal. Display shows 'E00'; manual RESET required.
Dunkirk 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 Dunkirk error E00
- Gas valve leaking through / not fully closing
- False flame signal from a contaminated or shorted flame sensor
- Residual flame or hot surface producing a false flame reading
- Incorrect combustion causing burner to run too hot
- Control module fault
What you can safely check
- Do not attempt repeated resets - a gas valve leaking through is a safety concern
- Confirm no gas smell; if you smell gas, shut off gas and leave, then call your gas utility
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 E00 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 Dunkirk repair.
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Parts often behind Dunkirk error E00
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Dunkirk Error E00 Repair Across Metro Vancouver
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