A.O. SMITH PROMAX / POWER VENT GAS SERIES Water Heater Gas Control Valve Clicking
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
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89%
CONF
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Gas Control Valve (Thermostat/Regulator)
The gas control valve contains the electromechanical solenoids and the control logic that governs gas flow. In A.O. Smith units, a persistent clicking sound without burner ignition indicates an internal failure where the solenoid is unable to stay energized or the internal relay is stuck in a cycle. This is a common failure mode in the electronic Honeywell-style valves often used by this brand.
SKU: 100262939
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6%
CONF
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Pilot Assembly with Thermopile/Thermocouple
The gas valve requires a specific millivolt signal from the thermopile to hold the solenoid open. If the pilot flame is weak or the thermopile is failing, the valve will repeatedly click as it attempts to engage and then immediately drops the connection for safety when it fails to detect a stable flame signal.
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5%
CONF
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FVIR Thermal Switch Kit
If the Flammable Vapor Ignition Resistant (FVIR) sensor has been triggered or is failing, it interrupts the circuit to the gas valve. This can cause the control logic to cycle the solenoid (clicking) as it attempts to verify the safety circuit before allowing gas flow to the main burner.
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DIY Repair Guide
Watch exactly how to replace the Gas Control Valve (Thermostat/Regulator).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.