CostolioBradford White water heaters error codes
8 water heater error codes for Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later), Bradford White atmospheric/direct vent water heaters, ICON 1.0 (before Jan 2019), what each one means and what to try, paraphrased from Bradford White's own source. Codes vary by model, so confirm in your own manual.
Safety. The Bradford White manual warns: if you smell gas, do not try to light any appliance, do not touch any electrical switch or use any phone in your building, and call your gas supplier from a neighbor's phone (or the fire department). Installation and service must be performed by a qualified installer, a service technician or the gas supplier. Source: Installation and Operation Instruction Manual 238-54725-00, Atmospheric Vent Gas Water Heater (Bradford White).
All codes
- No LED No pilot; the heater is not running.
- 2 flashes Weak pilot signal.
- 4 flashes Tank temperature is too high.
- 5 flashes Thermostat sensor fault.
- 6 flashes The leak accessory module detected a tank leak.
- 3 flashes The gas valve has not seen the temperature rise in time.
- 7 flashes Gas valve fault.
- 8 flashes Pilot stays lit with the knob at OFF.
No LED on Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later)
What it means: No pilot; the heater is not running. You can usually fix this yourself.
What to try
- Follow the lighting instructions on the water heater, or call a qualified technician.
2 flashes on Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later)
What it means: Weak pilot signal. This one often needs a licensed technician.
What to try
- Call a qualified technician to verify the pilot, thermopile voltage output and gas valve wire connections.
4 flashes on Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later)
What it means: Tank temperature is too high. This one often needs a licensed technician.
What to try
- A technician checks the temperature probe and that the tank is not above set point.
5 flashes on Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later)
What it means: Thermostat sensor fault. This one often needs a licensed technician.
What to try
- Have a qualified technician check the temp probe ohms and ensure a tight connection, and replace the gas valve if that does not fix it.
6 flashes on Bradford White atmospheric/direct vent water heaters, ICON 2.0 (Jan 2019 and later)
What it means: The leak accessory module detected a tank leak. This one often needs a licensed technician.
What to try
- Check for leaks and follow the accessory module's troubleshooting.
3 flashes on Bradford White atmospheric/direct vent water heaters, ICON 1.0 (before Jan 2019)
What it means: The gas valve has not seen the temperature rise in time. This one often needs a licensed technician.
What to try
- A technician checks the temperature probe.
7 flashes on Bradford White atmospheric/direct vent water heaters, ICON 1.0 (before Jan 2019)
What it means: Gas valve fault. This one often needs a licensed technician.
What to try
- Have a technician reset and, if the problem persists, replace the gas valve.
8 flashes on Bradford White atmospheric/direct vent water heaters, ICON 1.0 (before Jan 2019)
What it means: Pilot stays lit with the knob at OFF. This one often needs a licensed technician.
What to try
- A technician checks gas pressure and replaces the gas valve.
Source
- Quick Service Guide 238-55593-00: Atmospheric and Direct Vent Water Heaters - ICON 2.0 / ICON 1.0 (Bradford White) (checked 2026-11-02)
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