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Gas water heater pilot light cuts out prematurely

🏠 homeproduct problem2 reports ●●●●● severity 3/5

A homeowner reports that their older gas water heater pilot light and main burner shut off abruptly before the water reaches the set temperature, despite replacing the thermocouple.

Who's affected: A homeowner with an older series 200 AO Smith gas water heater.

What people do today

🔧 Fix this

Ideas a builder, maker or community group could start on:

  1. A diagnostic mobile app that uses audio analysis of the 'click' sound to identify specific faulty gas valve components.
  2. A universal, modular gas valve replacement kit designed specifically for legacy water heater models.
  3. A community-verified database of repair manuals and common failure symptoms for discontinued appliance models.
  4. A diagnostic mobile app that uses audio analysis of click sounds and voltage input to identify specific water heater component failures.
  5. A standardized, interactive troubleshooting flow chart specifically for gas water heater pilot systems that guides users through component-level testing.
I want to build this

Real voices

“the pilot light goes out when the main burner cuts off for our gas water heater... there’s an audible click and and then all gas is cut from the chamber to both burner and pilot rapidly. I should also note that the tank hadn’t reached temp when the cutoff occurred”

Source: Stack Exchange (diy) · CC BY-SA 4.0, user-contributed content from Stack Exchange; summarized and modified

“Replaced thermopile for water heater, but pilot wont stay lit”

Source: Stack Exchange (diy) · CC BY-SA 4.0, user-contributed content from Stack Exchange; summarized and modified

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