State Select Gas Water Heater Troubleshooting
The Short Answer: A cold State Select gas tank is a Lowe’s-badged State / AO Smith FVIR heater — not a mystery brand. Standing-pilot models die on thermocouple, draft, or a packed arrestor. Electronic Honeywell/Resideo controls die on a counted LED. Read the sticker on that valve. If you smell gas, leave. Do not thread on a “universal” control.
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Search Intent & The Real Problem
No hot water. Or the burner lights for ten seconds and drops. State Select is the Lowe’s line of State Industries (AO Smith family) — same guts as many American, Reliance, Craftmaster, and some Whirlpool tanks. Forums sell a company history and a Rheem flash chart. You need the lighting card, a flash count, and a dry combustion chamber.
Electric State Select ECO is a different door — reset button. Pilot that will not hold: State Select pilot. Generic stay-lit physics: will not stay lit. AO Smith-family electric lights: Craftmaster and flashing green.
What other guides get wrong
They treat State Select as an orphan and paste Rheem 5-flash onto the gas valve. Rheem 5-flash is often an upper element. State/AO Smith gas LEDs are a different sticker. They skip the FVIR screen at the bottom — lint from a dryer in the same closet will lock a healthy valve. They still describe cracking the union to bleed air. Do not purge it.
Step-by-Step Troubleshooting
Step 1: Confirm gas State Select — not electric, not tankless
| What you have | Path |
|---|---|
| GS-series atmospheric, PILOT / ON / OFF knob, view port | Standing pilot — lighting card, then millivolts |
| Electronic control, LED on the valve, “do not light with a match” | Count flashes; no match |
| Power-vent, PVC vent, pressure-switch tubing | Vent prove first — 3/4-flash on many Honeywells |
| Electric ES-series, access doors, red ECO | Not this page — reset |
| Jacket wet, rust at the seam | Tank — bottom leak |
- What to look for: Rating plate (GS / GP / 6-prefix State models). Photo of the LED sticker on the valve. That sticker wins.
- Required tools: Flashlight, phone camera.
A wet State Select is not a gas-valve job. A cold one with a live pilot and a dead main is.
Step 2: Standing pilot — one lighting cycle, then stop
- What to look for: Appliance shutoff parallel to the pipe (open). Other gas appliances lighting. Jacket card: OFF, wait five minutes, PILOT, hold, ignite, hold 30–60 seconds, release, then ON. Pilot should wrap the thermocouple tip with a sharp blue flame.
- Required tools: The sticker on your tank. A long lighter only if that card says so.
If it never appears, stop. A clogged orifice or a closed cock is not a tenth match. If it bangs or you smell gas, shut the appliance cock — loud bang.
Pilot lights while held, dies on release: thermocouple typically ~20–30 mV, tip not in the flame, or the valve’s pilot solenoid is dead. Pilot holds, main drops: thermopile sagging under load (hundreds of millivolts, must stay above dropout).
Step 3: Read the Honeywell / Resideo LED — sticker is law
| Pattern (verify the valve sticker) | Common State / AO Smith meaning | Next |
|---|---|---|
| 1 short flash every few seconds | Normal / standby | Leave it if water is hot |
| 2 flashes | Weak thermopile / low millivolts | Pilot quality, then licensed millivolt check |
| 3–4 flashes | Pressure switch (many power-vent) | Vent, blower, tubing — licensed |
| 5 flashes | ECO / temperature limit on many of these valves | Find the overheat; never jumper |
| 6 flashes | Internal electronics / valve driver | Licensed control — electronic fault |
| 7–8 flashes | Flammable-vapor lockout or sensor fault | Not a DIY sensor wipe |
- What to look for: A full cycle twice. One off/on cycle of the knob per the card is a reset. A second multi-flash in the same hour is a failed control, a wet chamber, or a weak pile — not a third reset.
- Required tools: The sticker. A watch.
One green heartbeat with 120°F water is not a lockout. Multi-flash with a cold tank is.
Step 4: FVIR screen, draft, and the closet — before parts
- What to look for: Lint felt under the tank, a dryer dumping into the same closet, a sealed louvered door, gasoline or paint in a garage. Soot on the combustion door. Tissue at the draft hood should pull in with the burner on — if it spills, shut it down. Power-vent: disconnected PVC, blocked termination, cracked pressure-switch hose.
- Required tools: Visual, gas off. Do not pull the sealed burner door if you cannot reseat the gasket.
A perfect thermopile cannot hold a pilot the chimney is blowing out. A packed arrestor looks exactly like a “bad State Select valve.”
Step 5: Gas supply and valve replacement — end of the diagnosis
- What to look for: Flex kinked. Missing sediment trap on a recent swap. LP bottle empty. Correct millivolts, clean screen, good vent prove — and the valve still will not hold. Internal failure. Match NG vs LP, millivolt vs 120-volt power-vent, FVIR harness. “Universal Honeywell” that does not match the plug is a callback.
- Required tools: On a licensed truck: manometer (about 3.5–7 in. w.c. natural gas / 10–11 in. w.c. LP at the appliance — confirm the rating plate), leak-detection solution, millivolt meter, combustion analyzer.
If a handyman offers to “just thread on a valve” without a leak test, fire him. Need it off? Shutoff.
When DIY Ends: Calling a Licensed Pro
It ended at the gas train. You may read the sticker, follow one lighting cycle, look for lint at the arrestor, and leave if you smell fuel. You may not loosen the flex, bypass the flammable-vapor sensor, jumper an ECO, or replace the control. A licensed plumber will measure millivolts and manifold pressure, service FVIR or the power-vent prove circuit, and swap the State/AO Smith valve only after those pass — then leak-test every joint.
Frequently Asked Questions
Q: Why is my State Select gas water heater not working? A: Pilot or igniter failure, a weak thermocouple or thermopile, FVIR lint lockout, a power-vent pressure switch, or a Honeywell control in multi-flash. Count the LED against the sticker on that valve.
Q: What does the flashing light on a State Select gas control mean? A: One flash every few seconds is often normal if the water is hot. Two flashes is commonly low millivolts. Higher counts are ECO, electronics, or flammable-vapor lockout. The valve sticker wins over a Rheem chart.
Q: Can I replace a State Select gas valve myself? A: In most cities that is licensed fuel-gas work. A wrong or leaking valve is a CO/fire event. Hire a plumber who will leak-test and match the AO Smith-family control.