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Common Bradford White fault codes with what each means, the likely cause, and what CANRO Heating & Cooling does to fix them. Servicing Bradford White systems across Metro Vancouver since 1999.
Bradford White Defender, eF Series, and AeroTherm Hybrid water heaters display fault codes via LED diagnostic patterns (Defender) or LCD (Hybrid HPWH). The Defender series LED blinks indicate specific faults.
Important: One reset attempt is generally safe for transient faults. If the same code returns within minutes, stop resetting — the lockout exists to protect the heat exchanger, ignition system, and gas-valve safety circuit. Note the exact code and call CANRO at (604) 359-1081. We carry common Bradford White parts in every truck — most code-triggered faults are resolved in a single visit.
What it means: OK.
Common causes: None.
What to do: None.
Reset guidance: n/a
What it means: Pilot OK, no call for heat.
Common causes: Normal.
What to do: None.
Reset guidance: n/a
What it means: Thermopile output below operating threshold.
Common causes: Failed thermopile, fouled pilot.
What to do: Pilot system service; thermopile $150-$300.
Reset guidance: one reset OK
What it means: Power-vent unit failed to ignite.
Common causes: Ignitor, flame sensor, gas valve, pressure switch.
What to do: Service required.
Reset guidance: one reset OK
What it means: Tank exceeded safe temperature.
Common causes: Failed thermostat, sediment build-up insulating the thermostat sensor.
What to do: Sediment flush + service.
Reset guidance: no
What it means: Internal sensor failure.
Common causes: Failed gas control valve.
What to do: Valve replacement.
Reset guidance: no
What it means: Combustion air pressure switch open (power-vent units).
Common causes: Vent obstruction, blower issue.
What to do: Inspect.
Reset guidance: no
What it means: Gas valve internal fault.
Common causes: Failed gas valve.
What to do: Valve replacement.
Reset guidance: no
What it means: Compressor, condensate, sensor, communication.
Common causes: Service.
What to do: one reset OK
Reset guidance: no
What it means: Visual inspection for pilot failure, rust on burner, weeping at relief valve.
Common causes: Standard service-only.
What to do: varies
Reset guidance: no
Note the exact code on your display, then call CANRO. Most Bradford White faults are diagnosed and repaired on the first visit because we stock common Bradford White service parts in every truck.
📞 Call (604) 359-1081 nowCANRO services Bradford White hot-water tanks (the trade standard) in every Metro Vancouver city — including same-day emergency response for no-heat, no-hot-water, and gas-leak situations. See our city-specific Bradford White pages:
→ See the full Bradford White lineup hub page with every model, specs, and install costs
This Bradford White error code guide is maintained by the CANRO Heating & Cooling team based on 25+ years of Bradford White install, service, and repair experience across Metro Vancouver. Codes and behaviour described match current model manuals. Last reviewed May 2026.
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