Dunkirk Error A06: Safety relay error
Lockout Alarm on the Helix VLT control indicating a safety relay error. It also latches after certain soft-lockout safety conditions (e.g. return-temp E40 or flue-sensor E39) recover and refire. The control requires a manual RESET at the user interface. Display shows 'A06 Safety Relay Error'. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
Lockout Alarm on the Helix VLT control indicating a safety relay error. It also latches after certain soft-lockout safety conditions (e.g. return-temp E40 or flue-sensor E39) recover and refire. The control requires a manual RESET at the user interface. Display shows 'A06 Safety Relay Error'.
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 A06
- Safety circuit / relay fault on the control module
- Repeated recovery from a soft-lockout safety condition (E39/E40) that escalated
- Wiring fault in the safety circuit
- Failed control module
What you can safely check
- Press the RESET button on the user interface once
- If A06 returns, leave diagnosis to a licensed technician - this is a safety-circuit fault
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 A06 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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Dunkirk Error A06 Repair Across Metro Vancouver
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