Bradford White Water Heater Status Light Codes: The Complete Guide

By the Certified Technicians at THE Water Heater Company
Factory-Trained Bradford White Authorized Service Providers | Three Locations Serving Ventura County, Los Angeles County, Orange County & Santa Barbara Since 2018
Last Updated: July 2026

That Blinking Light on Your Bradford White Is Talking to You. Here's How to Understand It.

You went to check your water heater — maybe the showers turned lukewarm, maybe you just noticed it — and found a small light blinking on the gas control at the bottom of the tank. Now you want to know: What is it saying? Is it serious? And what do I do next?

You are in the right place.

This is the most complete guide to Bradford White water heater status light codes available anywhere — built directly from five of Bradford White's own official documents: the service manual, the installation and operation manual, the factory quick-service guides, the specification sheet, and the written warranty. Not copied from other websites (several of which, we found while researching this guide, publish flash-code definitions that conflict with the manufacturer's).

We are THE Water Heater Company — factory-trained, authorized service providers for Bradford White, with three locations across Southern California serving Ventura County, Los Angeles County, Orange County, and the City of Santa Barbara. Bradford White is our flagship installed tank brand — we install and service these exact units every single day, from Camarillo to Van Nuys to Santa Ana. When the manufacturer's own manual opens by recommending "a plumbing professional," this is the version of that professional it means: trained by the factory, authorized by the brand.

Here is something worth knowing about the brand on your tank: Bradford White is an American-made, professional-channel water heater — you will not find them stacked in a big-box aisle, because the company sells through professionals who install them correctly. The very first line of the installation manual for these units reads: "For your family's comfort, safety and convenience, it is recommended this water heater be installed and serviced by a plumbing professional." And Bradford White's own website says the ICON® gas valve's flashing light is "an integral feature... designed to assist the professional plumber with operation and troubleshooting."

In other words: the manufacturer built a diagnostic language for professionals. This guide translates it for you — so you understand what your heater is saying, how urgent it is, and what the fix involves. Then the professionals take it from there.

Your Southern California Bradford White Is Special — Here's Why

If your Bradford White was installed in the Los Angeles or Orange County area, it is almost certainly an Ultra Low NOx model from the Eco-Defender Series® — and that is not a marketing flourish. Per Bradford White's own service manual, the Eco-Defender Safety System was "designed to meet the stringent NOx emissions standards required in the South Coast Air Quality Management District (SCAQMD) Rule 1121."

Translation: Bradford White engineered a specific series of water heaters for our air district's rules — cleaner combustion (a 10 ng/J NOx limit per the spec sheet), an advanced ScreenLok® flame arrestor, a resettable thermal switch, and an intelligent gas control smart enough to recognize restricted airflow from "severe lint, dust and oil accumulation" (the manual's words — and an exact description of the inside of a Southern California garage).

These units also carry equipment worth knowing you own: the Vitraglas® tank lining with Microban®, a Hydrojet® Total Performance System — a factory-built sediment-reducing device, which tells you exactly how seriously the manufacturer takes the sediment problem in hard-water regions like ours — and the ICON System® intelligent gas control, which runs entirely on power generated by the pilot flame itself. No cord, no battery — which is why a standing-pilot Bradford White keeps making hot water during a power outage.

⚠️ A Critical Safety Warning Before You Read Any Further

A gas tank water heater is one of the hardest-working appliances in your home, and it sits at the intersection of four potentially dangerous forces:

1. Natural Gas or Propane — The gas control valve, pilot, and burner on your Bradford White manage live fuel. Bradford White's own manuals lead with this: if you smell gas, do not try to light anything, do not touch electrical switches or use a phone in the building — leave, and call your gas supplier from a neighbor's phone. And remember that propane is heavier than air and pools at floor level, so smell low.

2. Electrical Components — The gas control is an electronic device with sensors, wiring, and safety circuits. Diagnosing it correctly involves instrumented tests — the factory procedure for the thermopile alone specifies millivolt readings under two different test conditions. That is meter-and-training work.

3. Pressurized Hot Water — Your tank holds 30 to 75 gallons of water hot enough to scald, under pressure, with a temperature-and-pressure relief valve standing guard. Bradford White's warranty is explicit that operating without a proper T&P relief valve releases the manufacturer from claims — that valve is not optional equipment.

4. Combustion Exhaust — Every gas tank heater produces exhaust, including carbon monoxide, that must vent out of your home. A blocked, undersized, or deteriorated vent is a life-safety emergency.

This combination of gas, electricity, water, and exhaust is why the fixes in this guide belong to a licensed, trained professional. The one exception — relighting a pilot by following the printed instructions on your own unit's label — is the single task Bradford White's own documentation directs homeowners through. Everything past that label is professional territory.

This guide is written to help you understand what is happening with your unit — not to guide you through a repair. Knowing what a diagnosis means is helpful and important; performing the procedure is a different job.

If you are in Ventura County, Los Angeles County, Orange County, or the Santa Barbara area and your Bradford White is blinking at you, call THE Water Heater Company at (877) 798-7487. We install this brand every day, our phones are answered by a live person 24/7/365, and we are here to help.

First Step: Which Generation Is Your Control? (Check Your Serial Number)

Here is the single most useful thing this guide will teach you — something no generic flash-code chart on the internet explains: Bradford White's flash codes changed between control generations, and your serial number tells you which table your unit speaks.

Per Bradford White's official quick-service guides for Ultra Low NOx models:

• ICON 1.0 — units with a serial date code before "TA" (January 2019)
• ICON 2.0 — units with a serial date code of "TA" (January 2019) and later

The first two letters of your Bradford White serial number are a date code. If your serial is at or near the changeover, even Bradford White's own guide says to verify the control generation — which is exactly the kind of detail we confirm on every service call.

Why does this matter so much? Because the same blink means different things on different generations. The clearest example: on ICON 1.0, "calling for heat" displays as a quick two-flash strobe — which a homeowner counting flashes can easily mistake for the two-flash weak pilot warning. One is "everything is fine, the burner is heating your water." The other is "your thermopile is dying." Reading the wrong table turns a normal heater into a false alarm — or worse, a real warning into false comfort.

Quick Reference: ICON 2.0 (Serial Date Code "TA" / January 2019 and Later)

Verbatim-faithful to Bradford White's official Quick Service Guide 238-55595-00 for Ultra Low NOx atmospheric and direct vent models.

Light Pattern	What It Means	Type
No LED	No pilot light / heater not in operation	Status — pilot is out
1 flash, 4-second pause	Knob in pilot position, or thermostat satisfied	Status — normal idle
1 flash every second	Thermostat calling for heat	Status — normal heating
2 flashes, 3-second pause	Weak pilot signal detected	⚠️ Warning
4 flashes, 3-second pause	High tank temperature	Fault
5 flashes, 3-second pause	Gas valve thermostat sensor fault	Fault
6 flashes, 3-second pause	Chamber door temperature sensor out of specification	Fault
9 flashes, 3-second pause	Tank leakage detected by accessory module	⚠️ Leak alert
10 flashes, 3-second pause	Insufficient combustion air detected	Fault
Solid ON	Control shutting down — knob turned to OFF; wait until the LED goes out before relighting	Status

Quick Reference: ICON 1.0 (Serial Date Code Before "TA" / January 2019)

Verbatim-faithful to Bradford White's official Quick Service Guide 238-55594-00 for Ultra Low NOx atmospheric and direct vent models.

Light Pattern	What It Means	Type
No LED	No pilot light / heater not in operation	Status — pilot is out
1 flash, 3-second pause	Knob in pilot position, or thermostat satisfied	Status — normal idle
Quick 2-flash strobe, 3-second pause	Thermostat calling for heat	Status — normal heating (do not confuse with the 2-flash warning below)
LED on continuously	Control knob turned to OFF; wait for the LED to go off before relighting	Status
2 flashes, 3-second pause	Weak pilot signal detected	⚠️ Warning
3 flashes, 3-second pause	Control has not seen the expected temperature rise in time	Fault
4 flashes, 3-second pause	High tank temperature	Fault
5 flashes, 3-second pause	Gas valve thermostat sensor fault	Fault
6 flashes, 3-second pause	Chamber door temperature sensor out of specification	Fault
7 flashes, 3-second pause	Gas valve fault	Fault
8 flashes, 3-second pause	Pilot remains lit while control knob is in OFF position	Fault
10 flashes, 3-second pause	Insufficient combustion air detected	Fault

Two more variants to know about: some Eco-Defender controls use a colored LED — green for normal operation, yellow for the low-thermopile warning, and red for faults (including a red 9-flash tank-leak alert). And power-vent models (the ones with a blower on top) follow different tables entirely. If your unit doesn't match these tables — or you're anywhere near the January 2019 changeover — read us the model and serial number from the label and we will decode your exact valve: (877) 798-7487.

The Patterns, One by One

What Does No Light on a Bradford White Water Heater Mean?

No light means the pilot is out and the heater is not operating. On a millivolt ICON valve, the pilot flame powers the whole control — no pilot, no power, no light, no hot water.

Type: Status — the pilot is out.
Common causes: a draft or interruption blew out the pilot, the gas supply was interrupted, or — the important one — a weakening thermopile finally quit. On these flammable-vapor-resistant units, a vapor event or restricted-airflow shutdown can also be the story (more on both below).
What you should do: this is the one item on this page Bradford White's own documentation directs homeowners through — following the lighting instructions printed on your unit's label. If the pilot relights and stays lit, watch it. If the pilot will not light, will not stay lit, or goes out again within days, stop relighting and call us — per Bradford White's own troubleshooting table, a pilot that won't stay lit points to the pilot assembly, and beyond that the gas control. Repeatedly relighting past a safety response is the wrong direction.

What Do the Normal Patterns Look Like?

On ICON 2.0: one flash every four seconds is idle (water is hot, burner resting); one flash every second means the burner is firing. On ICON 1.0: one flash every three seconds is idle; a quick two-flash strobe means the burner is firing. On both: a solid LED after you turn the knob to OFF is the control shutting down — Bradford White's instruction is simply to wait until the light goes out before relighting.

Type: Status — all normal. The only trap is the ICON 1.0 strobe, which looks like "two flashes" to a worried homeowner. The difference: the heating strobe is two quick flashes and the water should be getting hot; the warning is two distinct flashes with a three-second pause. When in doubt, call and describe it — this exact distinction is a thirty-second phone conversation.

What Do 2 Flashes Mean? (The Most Valuable Warning on the Tank)

Two distinct flashes with a three-second pause means the valve has detected a weak pilot signal. In plain English: the thermopile — the small generator that turns pilot heat into the electricity that runs your gas valve — is getting weak.

Type: ⚠️ Warning — and it is the single most useful warning a Bradford White gives you. The heater still works today. But a weakening thermopile has one direction of travel, and its destination is a cold shower and a no-light condition, statistically on the coldest week of the year — nearly a third of all water heater failures we see happen October through December.

What you should do: schedule service while it is still a warning. This is a genuinely instrumented diagnosis: Bradford White's factory procedure specifies thermopile output thresholds measured in millivolts (roughly 300 mV in the standard closed-circuit test — below that, the pilot assembly gets replaced). Catch it here and you are replacing a pilot assembly on your schedule instead of rearranging the whole morning on the heater's schedule.

What Do 3 Flashes Mean? (ICON 1.0)

Three flashes with a three-second pause on an ICON 1.0 control means the water is not heating up as fast as the control expects. Per the official guide, the checks are gas pressure and whether water is continuously flowing.

Type: Fault.
Common causes: low gas pressure starving the burner, a running fixture or plumbing crossover pulling hot water nonstop — or, in our region's classic version, a thick sediment blanket insulating the burner's heat from the water. The heater is working; the heat just isn't arriving on time.
What you should do: professional diagnosis — and if sediment is the insulation, a Professional Power Flush is the cure and the prevention.

What Do 4 Flashes Mean?

Four flashes with a three-second pause means high tank temperature — the water inside exceeded where it should be.

Type: Fault. ⚠️ Overheating water is a scald risk. Take this one seriously.
Common causes (per Bradford White's guide): tank temperature exceeding the setpoint, a control not operating properly, or heat migrating back into the tank from the plumbing system (recirculation setups can do this).
What you should do: professional diagnosis, promptly. And the Southern California note: sediment makes tanks overheat-prone — a tank that rumbles, pops, and now overheats is telling one connected story. Do not simply lower the dial and move on; the cause is still in there.

What Do 5 Flashes Mean?

Five flashes with a three-second pause means a gas valve thermostat sensor fault — the temperature-sensing side of the gas control is reporting values it shouldn't.

Type: Fault. ⚠️ The gas control is the most safety-critical component on the tank — never a DIY code.
What you should do: Bradford White's documented response is to reset the gas valve, and if the five-flash pattern persists, replace it. On an older tank, a gas valve replacement is the visit where repair-versus-replace deserves a real conversation — the valve on a 4-year-old tank is an easy yes; the valve on a 13-year-old tank with a depleted anode may not be. We will give you both numbers straight.

What Do 6 Flashes Mean?

Six flashes with a three-second pause means the chamber door temperature sensor is out of specification — the sensor watching the combustion chamber's behavior is reading wrong.

Type: Fault.
What you should do: per Bradford White's guide, the service path includes checking the sensor's resistance, cleaning the ScreenLok® flame arrestor, and cleaning the burner — which tells you what this code usually is underneath: the combustion area getting dirty. In a Southern California garage, lint and dust are not a maybe. Professional cleaning and sensor testing, and the code usually retires with the debris.

What Do 7 and 8 Flashes Mean? (ICON 1.0)

Seven flashes means a gas valve fault. Eight flashes means the pilot remains lit while the knob is in the OFF position — a pilot valve that isn't closing.

Type: Fault — both involve the gas valve. ⚠️ A valve that will not close is a same-day service call. Do not attempt to operate the unit; if you ever smell gas, follow the safety steps at the top of this guide.
What you should do: per the official guide, a persistent 7-flash means gas valve replacement, and an 8-flash points to gas pressure checks and valve replacement. Licensed professional, promptly.

What Do 9 Flashes Mean? (The Leak Alert)

Nine flashes with a three-second pause on ICON 2.0 (and newer colored-LED controls) means tank leakage has been detected by the accessory leak-detection module. Your water heater just told you it is standing in a problem.

Type: ⚠️ Leak alert — treat it as urgent.
What you should do: per Bradford White's service manual, the checks run from the T&P valve to every water fitting to a pressure test of the tank itself. Call the same day — a leak caught at the nine-flash stage is a repair conversation; a leak ignored is drywall, flooring, and an emergency replacement. And if your home doesn't have leak detection beyond the heater itself, this is the moment to ask about whole-home options — automatic shutoff at the heater or the main is the difference between a puddle and an insurance claim.

What Do 10 Flashes Mean? (The Garage Lint Code)

Ten flashes with a three-second pause means insufficient combustion air detected. Your Eco-Defender's intelligent control — designed, per the service manual, to recognize "restricted airflow conditions caused by severe lint, dust and oil accumulation on the burner screen and arrestor plate" — has decided it cannot breathe well enough to burn safely.

Type: Fault. ⚠️ Combustion air is a safety matter, not a comfort matter.
What you should do: per Bradford White's guide, the service path is gas pressure checks, cleaning the ScreenLok vapor screen, checking the venting, and cleaning the burner. This is the single most Southern-California-garage code on the tank: the dryer two feet away, the workbench sawdust, a decade of dust. Professional cleaning restores the airflow — and this exact cleaning is part of a proper annual maintenance visit, which is why maintained heaters almost never show this code.

A Word About the Defender® System, Flammable Vapors — and Your Wallet

Bradford White residential gas tanks carry flammable vapor ignition resistance (the Defender® and Eco-Defender® systems) — a flame arrestor, sight window, and resettable thermal switch designed to keep ignitable fumes (gasoline, paint thinner, solvents) from becoming a fire that leaves the combustion chamber.

Three things every garage-water-heater owner should hear:

1. If a flammable vapor event happens, the system did its job — and the response is serious. Per Bradford White's own service manual, a flammable vapor incident is cause to replace the water heater — and per the installation manual, "replacement of a Flammable Vapor Ignition Resistant System equipped water heater due to a flammable vapor shutdown is not covered under the terms of the limited warranty." Read that twice: the gas can next to the heater can cost you the entire unit, out of pocket.
2. Corrosive vapors are the quiet cousin. The installation manual also warns that airborne chemicals — spray-can propellants, cleaning solvents, pool chemicals, refrigerants, calcium and sodium chloride (that's water-softener salt), waxes — corrode water heater components at very low concentrations, and damage from corrosive vapor exposure is not covered by the warranty either. The pool chlorine and the softener salt bags do not belong next to the heater any more than the gas can does.
3. Storage habits are warranty habits. Keep the area around your water heater clear. It is a heat-producing gas appliance, not a shelf.

What If the Light Pattern Isn't in This Guide?

Then your valve speaks a different dialect — power-vent models, certain control variants, and older generations each have their own tables. Do not borrow a definition from a generic internet chart — several popular ones conflict with Bradford White's official documentation. Read us the model and serial number from your unit's label, describe the pattern (and the LED color, if yours is a colored-LED control), and we will tell you exactly what your valve is saying and whether it can wait: (877) 798-7487.

Bonus: How to Read Your Own Bradford White Warranty Off the Label

Here is a genuinely useful trick from Bradford White's official warranty document: your warranty length is written in your model number. Look at the rating plate — the digits before the final letter tell the tank warranty: a model ending in ...T6N has a 6-year tank warranty, ...T10N has a 10-year, and parts generally carry 6 years. The warranty also transfers to subsequent owners as long as the heater stays at its original installation address.

Now the part most homeowners never read — what the warranty does not cover, straight from the document, because every item on this list is preventable:

• Sediment or lime precipitate in the tank. Hard-water sediment damage is explicitly excluded as an "adverse local condition." In Southern California, that means the annual flush is not just maintenance — it is warranty protection.
• Installation in a closed system without provisions to manage thermal expansion. Translation: if your home has a closed plumbing system (a check valve or pressure regulator) and no expansion tank, the warranty has an exit. This is exactly why we install expansion tanks — it is not an upsell; it is the manufacturer's condition.
• Installation without a proper T&P relief valve, or contrary to codes — permits and code-correct installation are warranty protection too.
• Anode rod removal (except for inspection and replacement) voids it; anodes themselves are consumable and not covered. Anode care is on you — which is what our annual anode inspection, and powered anode upgrades for odor-prone water, exist for.
• Corrosive vapor damage and flammable-vapor shutdowns — see the storage section above.
• Labor, permits, and installation costs are not covered even on a valid tank claim — the warranty supplies the replacement unit through the supply chain; the professional work around it is separate. (One more practical note: without proof of installation, coverage runs from three months after the manufacture date — keep your installation invoice. A professionally documented install starts your clock correctly.)

A Bradford White with an annual flush, a live anode, an expansion tank where required, and a clean storage area around it is a Bradford White whose warranty means what the model number says. That is the whole game.

Frequently Asked Questions About Bradford White Status Lights

What does a blinking light on my Bradford White water heater mean?
It depends on the pattern and your control generation. On current (ICON 2.0, January 2019+) Ultra Low NOx models: slow single flashes are normal, two flashes is a weak pilot warning, four is high tank temperature, five is a gas valve sensor fault, six is the chamber door sensor, nine is a detected tank leak, and ten is insufficient combustion air. Pre-2019 (ICON 1.0) units use a different table — including a quick two-flash strobe that is normal heating, not a warning. When in doubt, call with your model and serial number.

How do I know if my Bradford White is ICON 1.0 or ICON 2.0?
The serial number's date code tells you: "TA" (January 2019) and later is ICON 2.0; earlier is ICON 1.0. Near the changeover, even Bradford White's guide says to verify — which we do on every call.

Is a blinking green light on a Bradford White normal?
Usually, yes — slow single flashes (and on older controls, the quick heating strobe) are normal status patterns. On colored-LED controls, green means normal, yellow is the thermopile warning, and red patterns are faults. Grouped distinct flashes with three-second pauses are the ones carrying warnings or faults.

Can I relight the pilot on my Bradford White myself?
Following the lighting instructions printed on your unit's label — yes, that is the one procedure Bradford White's own documentation directs homeowners through. But a pilot that will not light, will not stay lit, or keeps going out has an underlying cause that relighting does not fix. That is when to call.

Why does my Bradford White pilot keep going out?
Most often a thermopile at the end of its life (the two-flash warning is this exact story told early), a pilot assembly issue, a draft problem, or a safety system intervening — including the flammable-vapor and restricted-airflow protections. Repeated relighting past a safety response is the wrong direction; diagnosis is the right one.

My hot water smells like rotten eggs — is that the water heater?
Often it is a reaction between the sacrificial anode rod and impurities in certain water — Bradford White's own manual describes exactly this and points to alternative anodes as the fix while keeping the tank protected. (Important: removing the anode entirely voids the warranty.) A powered anode rod solves the odor without sacrificing protection — ask us.

I'm going out of town — anything I should know about the water heater?
One from Bradford White's own warnings: a water heater that sits unused for two weeks or more can accumulate hydrogen gas in the lines. When you return, run the hot tap at the kitchen sink for several minutes — before using any electrical appliance connected to the hot water system — and don't smoke or have open flame near the faucet while it runs.

How long do Bradford White water heaters last?
They are professional-grade equipment — Vitraglas-lined tanks, the Hydrojet sediment-fighting system, serviceable controls — and in our experience they earn their reputation. But Southern California's hard water is the great equalizer, and the warranty itself excludes sediment damage. Annual flushes and anode inspections are the difference between a tank that retires on schedule and one that quits early; past year 8, an annual professional inspection is simply good economics.

The Honest Truth: The Best Bradford White Repair Is the One You Scheduled

Look back through this guide and notice the pattern. The two-flash warning is a thermopile telling you weeks in advance. The six- and ten-flash codes are lint and dust announcing themselves before they become a shutdown. The four-flash overheat is often sediment finishing a story it started years earlier — the same sediment the warranty explicitly declines to cover. The nine-flash leak alert is a tank asking for help while help is still cheap. And Bradford White's own service manual calls for burner and pilot inspection at periodic intervals.

Every one of those is addressed in a single annual maintenance visit: a Professional Power Flush, anode rod inspection, thermopile and pilot check, burner-area and ScreenLok inspection, T&P valve test, and a full safety review — including venting, seismic strapping (California requires strapping in the upper and lower thirds of the tank, per the Uniform Plumbing Code — we install it correctly on every job), and the storage area around the unit.

If your Bradford White is in Ventura County, Los Angeles County, Orange County, or the Santa Barbara area, ask us about THE Hot Water Protection Plan — annual safety inspection, a Professional Power Flush, water test and anode inspection, a full-port drain valve upgrade, priority scheduling, a repair discount, and a $0 diagnostic visit each year. It is how a good tank becomes an old tank — with its warranty intact.

What Does Bradford White Status Light Service Cost?

We believe in transparent pricing — it is written into THE Fair Price Guarantee on every invoice. The honest answer is that it depends on what the blinking is about: a pilot assembly is a very different visit from a gas control valve, and a thermopile is different from a sediment-bound tank. What we can promise: a flat diagnostic visit with the price told to you up front, a written quote before any work begins, and no surprises on the invoice — ever. Call (877) 798-7487 — or build your exact quote online with our price builder, pick your package, hit Book Now, and choose your appointment time on the spot. Either way, you know your number before we start.

Bradford White Blinking at You? We Install This Brand Every Day.

THE Water Heater Company installs and services Bradford White water heaters across all of Southern California as factory-trained Bradford White Authorized Service Providers — it is our flagship installed tank brand:

• Ventura County — 808 Calle Plano, Camarillo, CA 93012 (headquarters)
• Los Angeles County — 13615 Victory Blvd #108, Van Nuys, CA 91401
• Orange County — 630 S Grand Ave #109, Santa Ana, CA 92705

Serving Ventura County, Los Angeles County, Orange County, and the City of Santa Barbara. Call by 12 noon and same-day standard tank installation is guaranteed, 7 days a week — after noon, call anyway; we deliver same-day or next-day service 99% of the time. Phones answered by a live person 24/7/365.

Call (877) 798-7487 — THE Water Heater Company. Your Trusted Water Heater Authority.

Related Reading: More Guides from THE Water Heater Company

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• Rheem Tankless Water Heater Error Codes: The Complete Guide
• Noritz Tankless Water Heater Error Codes: The Complete Guide
• Navien Tankless Water Heater Error Codes: The Complete Guide
• A.O. Smith Tankless Water Heater Error Codes: The Complete Guide
• Takagi Tankless Water Heater Error Codes: The Complete Guide
• Water quality profiles for 99 Southern California communities
• The State of Hot Water 2026 report

Sources

• Bradford White, Quick Service Guides 238-55595-00 (ICON 2.0) and 238-55594-00 (ICON 1.0), Ultra Low NOx Atmospheric & Direct Vent — official LED status code tables by control generation
• Bradford White, Eco-Defender Series® Service Manual 238-51546-00 — safety system design, SCAQMD Rule 1121, LED troubleshooting tables, thermopile test specifications, flammable-vapor incident guidance
• Bradford White, Ultra Low NOx Gas Water Heater Installation and Operation Manual 238-53393-00 — FVIR system, warranty conditions, corrosive vapor warnings, hydrogen gas warning, seismic provisions
• Bradford White, Limited Residential Water Heater Warranty 238-39699-00 — coverage periods, model-number decoding, and exclusions
• Bradford White, Specification Sheet 1113 (URG Ultra Low NOx series) — Eco-Defender, ICON System, Vitraglas with Microban, Hydrojet, NOx compliance
• BradfordWhite.com official FAQ — "What does the flashing light(s) mean on my water heater's gas valve?"
• Field experience: THE Water Heater Company certified technicians, Southern California service area