2 flashes = Thermopile voltage low. Same as State and AO Smith Signature 2-flash diagnostics.
Diagnostic sequence
1. Clean intake screen (#1 cause)
FVIR-equipped Whirlpool units have a fine mesh intake screen at the base. Clogged screen restricts combustion air, weakens pilot, drops thermopile voltage. Vacuum from below. Resolves 50% of chronic 2-flash issues.
2. Inspect pilot flame
Steady blue flame enveloping top ⅓ of thermocouple tip. Weak yellow flame = inadequate gas supply. Missing thermocouple = pilot orifice or bracket issue.
3. Clean pilot tube
Spider webs or dust restrict gas flow. Compressed air to clear (gas off).
4. Replace thermocouple
$15-25 part, 45-min DIY. See thermocouple page.
5. Verify gas pressure
Low incoming pressure prevents proper pilot. Plumber test with manometer.
Reset
- Address suspected cause
- Cycle gas valve (off → pilot → on)
- Hold gas button 60 seconds after pilot lights
Bottom line
Most 2-flash cases: clean intake screen + replace thermocouple. Cheap DIY fixes.