Bradford White gas water heater status light: 2 flashes, then a 3-second pause
ICON control by Resideo, V1: Weak pilot flame detected.
ICON control by Resideo, V2: Low thermopile voltage, so the main valve is not turned on.
ICON control by SIT: Low thermopile voltage; the main burner is not lit.
If you smell gas
Stop: do not relight or troubleshoot anything. Bradford White’s own words (first page of both Installation and Operation Manuals, 238-51007-00R and the Ultra Low NOx 238-53393-00K):
- DO NOT try to light any appliance.
- DO NOT touch any electrical switch.
- DO NOT use any phone in your building.
- Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
- If you cannot reach your gas supplier, call the fire department.
Calling from a neighbor’s phone means leaving the building first.
Bradford White’s manual has 3 gas controls with a table for this pattern, and they do not all mean the same thing: the full wording for each is below.
What you see: 2 flashes, then a pause, repeating. Applies to: Bradford White residential gas-fired tank water heaters with the ICON System electronic gas control.
What it means, by gas control
ICON control by Resideo, V1
The manual’s wording: “Two flashes and three second pause”.
Weak pilot flame detected. The system resets itself when the pilot flame is sufficient.
ICON control by Resideo, V2
The manual’s wording: “Two flashes and three second pause (LED yellow)”.
Low thermopile voltage, so the main valve is not turned on.
ICON control by SIT
The manual’s wording: “Two flashes and three second pause”.
Low thermopile voltage; the main burner is not lit.
What Bradford White tells the owner to do
Bradford White’s manual gives the owner no step of their own for this code: call for service.
semiatic gives no repair instructions of its own. The steps above are only the ones Bradford White addresses to the owner in its manual.
The repair Bradford White’s table gives — for the qualified person you call
Shown so you know what to expect, not as steps to do yourself: Bradford White reserves repairs to the gas control, burner and gas piping for a qualified service technician.
- ICON control by Resideo, V2: check the thermopile and its connections; check the pilot flame.
- ICON control by SIT: probable cause: loose thermopile connections or a weak pilot flame.
When to call a qualified service agency
Bradford White’s manual: “CAUTION: For your safety, do not attempt repair of combination gas control, burners or gas piping. Refer repairs to a qualified service technician.” Its FAQ adds: “If you are experiencing operating issues with your water heater, please contact a plumbing professional.”
Source
Bradford White’s own manuals, read on the date shown.
- Bradford White Corporation: Gas-Fired Water Heater Installation and Operation Manual (238-51007-00R, REV 07/26), “Troubleshooting — ICON System Electronic Gas Control” (Resideo V1, Resideo V2, SIT) — Bradford White residential gas-fired tank water heaters with the ICON System electronic gas control. docs.bradfordwhite.com Checked 2026-09-29.
- Bradford White Corporation: Ultra Low NOx Gas Water Heater Installation and Operation Manual (238-53393-00K, REV 08/26), “Troubleshooting — Resideo V1” and “Troubleshooting — Resideo V2” — Bradford White Ultra Low NOx residential gas tank water heaters with the ICON System electronic gas control. docs.bradfordwhite.com Checked 2026-09-29.
The same pattern on other brands
The same count on another maker’s gas control can mean something else.