IBC Technologies · Error codes
IBC SFT-1 F006 — Flame detected when burner is off
F006
The controller detected a flame signal at a moment when the burner should be off. A stray flame signal can indicate a gas valve passing gas when closed, an electrical fault, or a sensor/grounding problem, so the unit shuts down.
If you smell gas
- Stop what you are doing. Do not use phones, switches, matches or anything that can spark inside.
- Go outside and leave the door open behind you.
- Call the FortisBC 24-hour emergency line at 1-800-663-9911 or dial 911.
Only after that, call ROMA about the boiler. Official guidance: FortisBC gas leaks and odour.
Applies to
This fault is shown by the numeric-display touch panel control on Superflow SFT-1 tankless water heaters (SFT 199-1), as documented in IBC Installation & Operating Instructions — SFT 199-1 tankless water heater, doc 84160406, sections 5.3.1–5.3.3.
Controller: numeric-display touch panel control. Source manual: 84160406 (2024-09).
Why a code is not a diagnosis
The code does not say whether the signal is a real flame (gas valve leaking through) or an electrical artifact from grounding or a faulty module. Both paths are on the manual's check list and both need a technician.
Safe things to observe
- Treat this code seriously: if gas is passing when it should not, there is a hazard.
- If you smell gas, leave the building immediately and call FortisBC at 1-800-663-9911 or 911 from outside.
- Turn the appliance off at its service switch if you can do so safely.
Do not
- Do not reset or run the appliance after this code without a technician's diagnosis.
- Do not touch the gas valve.
How professional service helps
- A technician verifies grounding and internal/external power supply quality.
- The gas valve is tested to confirm it closes at the end of a demand; the ignition module or control module is replaced if the fault points there.
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Parts and service
Parts commonly involved
These parts appear in the documented text for this alert. A code reports a condition, not a failed part — a technician confirms the cause by testing before anything is replaced.
Flame sensor (flame rod)
The flame sensor is the small rod that proves a gas boiler's burner is actually lit before the control will keep the gas valve open.
What a technician checks →Gas valve
The gas valve is the boiler's controlled gateway for gas: it opens only when the control has proven safe conditions, meters the fuel to the burner,…
What a technician checks →Burner assembly
The burner assembly is where gas and air meet and burn inside a boiler, and its condition decides whether combustion is clean or makes carbon…
What a technician checks →Boiler sensors (thermistors)
Boiler sensors are small temperature probes, usually thermistors, that tell the control how hot the water and flue gases are so it can fire safely…
What a technician checks →
Service for this alert
- Gas Boiler Repair
Licensed gas technicians from ROMA Heating & Cooling diagnose and repair residential and light-commercial gas boilers across…
- Emergency Boiler Repair
Priority gas boiler repair for homes and buildings in Greater Vancouver with no heat, no hot water, a locked-out boiler or a leak.
Every boiler part explained — what it does, how it fails and what a technician checks.
Documented for IBC Technologies Superflow SFT-1 Tankless.
Frequently asked questions
Is flame-when-off dangerous?
It can be, because one possible cause is a gas valve passing gas while the burner is off. Until a technician confirms otherwise, treat the appliance as needing service before it runs again.
Boiler locked out? Call with the alert text ready.
The brand, model and this alert are passed along when you request service online, so the technician arrives prepared.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- IBC Installation & Operating Instructions — SFT 199-1 tankless water heater, doc 84160406, sections 5.3.1–5.3.3 · 84160406 · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.