Dunkirk Error E36: Outlet
On the Q90 IMBC control, hard-lockout code 36 means the outlet/supply temperature sensor reads open circuit (broken connection). The control cannot read outlet temperature and locks out. Display shows 'E36'; manual RESET required. (Note: on the Helix VLT control E36 instead indicates a low-water condition - see Helix VLT entry.) We diagnose and repair it across Greater Vancouver — same-day and after-hours.
On the Q90 IMBC control, hard-lockout code 36 means the outlet/supply temperature sensor reads open circuit (broken connection). The control cannot read outlet temperature and locks out. Display shows 'E36'; manual RESET required. (Note: on the Helix VLT control E36 instead indicates a low-water condition - see Helix VLT entry.)
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 E36
- Open / failed outlet water temperature sensor
- Disconnected or broken sensor wiring
- Corroded sensor connector
- Failed control module input
What you can safely check
- No homeowner-safe internal checks - sensor and wiring diagnosis requires a licensed technician
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 E36 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 E36
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Dunkirk Error E36 Repair Across Metro Vancouver
Frequently Asked Questions
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