Quick answer from a licensed plumber: on a Bradford White gas water heater with an ICON gas valve, the flashing LED on the valve is a status code. No light means the pilot is out. A light that stays on means the knob was just turned off; wait for it to go out before relighting. Two flashes is a weak pilot signal, four is high tank temperature, five is a thermostat sensor fault and six is a leak found by an optional leak-detection accessory. On older ICON 1.0 valves, three means the valve did not see the water heat up in time, seven is a gas valve fault and eight means the pilot stays lit with the knob off. The “everything is fine” pattern depends on which ICON version you have. Bradford White says these codes are there to help the professional plumber, and that an owner with an operating problem should contact a plumbing professional.
Safety first: if you smell gas, do not try to light any appliance, do not touch any electrical switch or use any phone in the building, and call your gas supplier from a neighbor’s phone (the fire department if you cannot reach them). That is the standard gas-appliance safety instruction. Our advice: if you ever see the pilot burning with the knob turned to OFF, turn off the gas valve on the line feeding the heater and call a licensed plumber.
Which ICON Do You Have?
Bradford White’s Quick Service Guide splits its atmospheric and direct-vent heaters by the serial number’s date code: “TA” (January 2019) and later is ICON 2.0; TA and earlier is ICON 1.0. If your serial is at or near that date, Bradford White says to call its technical support (800-334-3393) to confirm the control generation, and to check the manufacture date with its For The Pro contractor app or at bradfordwhite.com. It matters because the normal “idle” and “heating” flashes are different, so a healthy ICON 2.0 heater can look like a fault if you read it against the ICON 1.0 chart.
ICON Status Light Codes at a Glance
| LED pattern | ICON 2.0 (TA / Jan 2019 and later) | ICON 1.0 (TA and earlier) |
|---|---|---|
| No LED | No pilot light / heater not in operation | No pilot light / heater not in operation |
| 1 flash, 4-second pause | Knob in pilot position or thermostat satisfied (normal) | — |
| 1 flash, 3-second pause | — | Knob in pilot position or thermostat satisfied (normal) |
| 1 flash every second | Thermostat calling for heat (normal) | — |
| Strobe: 2 quick flashes, 3-second pause | — | Thermostat calling for heat (normal) |
| Solid / on continuously | Not an error: knob turned to off, control shutting down | Control knob turned to the off position |
| 2 flashes, 3-second pause | Weak pilot signal detected | Weak pilot signal detected |
| 3 flashes, 3-second pause | Not listed in the ICON 2.0 guide | Gas valve has not seen a temperature rise in the proper amount of time |
| 4 flashes, 3-second pause | High tank temperature | High tank temperature |
| 5 flashes, 3-second pause | Thermostat sensor fault | Thermostat sensor fault |
| 6 flashes, 3-second pause | Tank leakage detected by the accessory module | Water leak detected by the accessory module (if installed) |
| 7 flashes, 3-second pause | Not listed in the ICON 2.0 guide | Gas valve fault |
| 8 flashes, 3-second pause | Not listed in the ICON 2.0 guide | Pilot remains lit while the control knob is in the off position |
“Not listed” means exactly that: Bradford White’s ICON 2.0 guide does not include those patterns. If you see one on a newer heater, give the flash count and the serial number to whoever services it.
I send an occasional note when a new guide goes up — repairs worth doing yourself, and the parts that actually last. No spam, no course funnel; written by a licensed Georgia plumber.
What You Can Safely Do, Code by Code
No light
Bradford White’s service action is to follow the lighting instructions on the water heater. Read the label on your heater and follow it exactly. If it will not light after the attempts the label allows, stop there and call a plumbing professional.
Light on solid
Not an error. The knob was turned off and the control is shutting down. Bradford White says to wait until the LED goes out before you try to relight.
2 flashes: weak pilot signal
Bradford White’s first step is to verify that the pilot is lit — look through the sight window. The next steps, checking the thermopile’s voltage and the wire connections at the gas valve, and the parts it lists (the pilot assembly or the gas valve), are work for a plumbing professional. On an ICON 1.0 valve, do not mistake the normal heating signal for this code: Bradford White lists a strobe of two quick flashes and a three-second pause as the thermostat calling for heat.
3 flashes (ICON 1.0): no temperature rise in time
One of Bradford White’s service actions is to verify that water is not flowing. The owner-level version: make sure no hot water tap, shower or appliance is running or dripping, since a steady draw keeps a tank from heating up. The other step, measuring the temperature probe, is technician work.
4 flashes: high tank temperature
Bradford White’s service steps are to check the temperature probe, check whether the tank temperature exceeds the setpoint and verify there is no heat migration in the plumbing system; the parts it lists are the gas valve cover with temperature probe, or the gas valve. Treat the water as scalding until it has been checked. If the relief valve on the tank is discharging hot water, do not cap or plug it; turn the heater off and call a plumber. The last two points are our advice, not Bradford White’s.
5 flashes: thermostat sensor fault
A temperature probe problem: Bradford White lists checking the probe and its connection, then the gas valve cover with probe, or the gas valve. Plumber work.
6 flashes: leak detected
This only appears if the leak-detection accessory module is installed. Look around the base and in the drain pan for water, and follow the accessory’s own troubleshooting. Our guides on a water heater leaking from the bottom and water heater drain pans can help you work out where the water is coming from.
7 and 8 flashes (ICON 1.0): gas valve
Seven flashes is a gas valve fault: Bradford White’s steps are to reset the gas valve and replace it if the problem persists. Eight flashes means the pilot stays lit with the knob turned off: its steps are to check the gas pressure and replace the gas valve. Both are gas-valve work for a plumbing professional. With eight flashes, our advice is to turn off the gas valve on the line feeding the heater until then.
Why Bradford White Points You to a Plumber
Bradford White’s answer to “what does the flashing light mean” is that the feature is designed to help the professional plumber with operation and troubleshooting, and that owners with operating problems should contact a plumbing professional. Its Quick Service Guides are written for pros: the fault codes point to checks such as temperature-probe resistance, thermopile voltage, and inlet and manifold gas pressure, and to parts that are all gas-control components. A homeowner’s part is to read the code correctly, rule out the simple causes above, and hand over good information. The same pro-first approach shapes how Bradford White sells its heaters; see Rheem vs Bradford White.
Before You Call: What to Write Down
- The exact pattern: count the flashes two or three times, and note the length of the pause.
- The full model and serial number from the rating label, which tells the plumber which ICON generation you have.
- Whether you can see the pilot through the sight window.
- Whether any hot water was running, and whether there is water around the base.
When to Stop and Call a Licensed Professional
- You smell gas, or the pilot burns with the knob off (8 flashes).
- Any 2, 3, 4, 5, 7 or 8 flash code after the simple checks above.
- Water around the heater with a 6-flash code.
- The pilot will not light after the attempts on the label.
FAQ
What does a solid light mean on a Bradford White water heater?
On the ICON gas valve, a light that stays on is not an error. It means the control knob was turned to OFF and the control is shutting down. Bradford White’s guide says to wait until the light goes out before you try to relight.
How do I tell whether my Bradford White has ICON 1.0 or ICON 2.0?
Bradford White splits them by the serial number date code: “TA” (January 2019) and later is ICON 2.0, and TA and earlier is ICON 1.0. If your serial is at or near that date, Bradford White says to contact its technical support to confirm the control generation. It also says to check the manufacture date with its For The Pro contractor app or at bradfordwhite.com.
Is one flash every second normal on a Bradford White?
On an ICON 2.0 valve, yes: Bradford White lists one flash every second as the thermostat calling for heat. On an ICON 1.0 valve, heating shows as a strobe of two quick flashes and a three-second pause instead.
What do 2 flashes mean on a Bradford White water heater?
A weak pilot signal. Bradford White’s service steps are to verify the pilot is lit, check the thermopile voltage output and check the wire connections at the gas valve, and the parts it lists are the pilot assembly and the gas valve. Past confirming that the pilot is lit, that is work for a plumbing professional. On an ICON 1.0 valve, Bradford White lists a strobe of two quick flashes and a three-second pause as the thermostat calling for heat, which is normal and is not this code.
Can I reset a Bradford White ICON gas valve myself?
Bradford White’s guide lists “reset gas valve” as the first service step for seven flashes on ICON 1.0 valves, but does not describe the procedure in that guide, and its FAQ says the flash codes exist to help the professional plumber. Our advice: count the flashes, write down the serial number and let a plumber handle the reset and any valve replacement.
Why Trust Plumbing Picks
Journeyman Plumber — State of Georgia Licence #JP507711
Plumbing Picks is written by a Georgia journeyman plumber, and the license can be checked through the Georgia Secretary of State’s license verification portal. Every code meaning and step on this page comes from the manufacturer documents listed below, which we opened and read; where we add our own advice, the page says so. This page is general information for owners, not an offer of repair work. Nobody pays to be included here. More on who writes this and how we pick.
Sources
- Bradford White FAQ: What does the flashing light(s) mean on my water heater’s gas valve?
- Bradford White: Quick Service Guide, Atmospheric and Direct Vent Water Heaters — ICON 2.0 (serial date code “TA,” Jan 2019, and later) and ICON 1.0 (TA and prior), 238-55593-00A / 238-55592-00A
- Bradford White: Quick Service Guide, Atmospheric Vent Water Heaters — ICON (238-55947-00_A)
Bottom Line
Find the date code in the serial number first, because ICON 1.0 and ICON 2.0 show “normal” differently. No light: relight from the label. Solid light: wait until it goes out. Two flashes: confirm the pilot is lit. Four, five, seven and eight flashes, and a three-flash code that is not just a running tap, are gas-control problems that Bradford White sends to a plumbing professional.