IBC Boiler Error Codes

A plain-English reference to 12 common IBC fault codes — what each means, what causes it, and when to call a licensed BC gas technician.

IBC boilers are designed and built in Burnaby, BC — so local parts and support are excellent. The V-10 touchscreen control reports faults as "E" codes. This reference covers the common IBC fault codes seen on SL combi and V-Series heating boilers, with the likely causes and why instrumented gas and combustion faults must be handled by a licensed technician.

Smell gas? Leave the building immediately and call 911 or FortisBC at 1-800-663-9911 from outside. Never bypass a safety lockout or attempt gas work yourself — in BC it must be done by a licensed gas fitter.

Ignition fault

IBC E01Ignition Lockout

Flame failure

IBC E02Flame Loss / No Flame Signal

Over-temperature / high-limit

IBC E03High-Limit / Over-Temperature

Temperature-sensor fault

IBC E04Supply Sensor Fault IBC E05Return Sensor Fault

Water-flow / circulation fault

IBC E06Low Water / Flow Fault

System water-pressure fault

IBC E07Low System Pressure

Air-pressure / venting fault

IBC E08Air-Pressure / Venting Fault

Combustion-fan fault

IBC E09Combustion / Fan Fault

Control-board (PCB) fault

IBC E10Control / PCB Fault

Communication fault

IBC E11Communication Fault

Condensate fault

IBC E12Condensate Fault

IBC error codes — FAQ

Why is my IBC boiler showing an error code?

IBC boilers display a fault code when a safety circuit detects a problem — for example with ignition, flame, water flow, temperature or venting. The code points to the affected system. The boiler shuts down to protect itself; a licensed technician then diagnoses the true root cause before repair.

Can I just reset my IBC boiler?

A single reset after a one-off event is usually fine, but repeated resets without fixing the cause can be unsafe — especially for ignition, gas and venting faults — and can cause further damage. If the code returns, switch the boiler off and call GasBoilers.ca at 604-359-1081.

Do you repair all IBC boiler models in Greater Vancouver?

Yes. Our Red Seal–certified, gas-licensed technicians service IBC SL, V, DC and HC series across Vancouver, Burnaby, Surrey, Richmond, the Tri-Cities and the rest of Greater Vancouver. Same-day appointments are often available.

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Error codes by brand

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Get your IBC boiler back up and running

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