GE Flammable Vapor Sensor / Safety Lockout

GE gas water heater frequently goes out due to flammable vapor sensor or safety lockout (no code on basic models).

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Triggered flammable vapor sensor, blocked combustion air intake, dirty flame arrestor, failed FV sensor

How to Fix / Troubleshooting

Safety: If flammable vapors (gasoline, solvents) are present, remove the source and ventilate the area. Do not operate the heater.

Steps to address FV sensor lockout:

  • Clear area: Remove any flammable liquids or chemicals stored near the heater.
  • Clean air intake: Vacuum dust and lint from the combustion air intake and flame arrestor screen at the bottom of the heater.
  • Reset (if model allows): Some GE models require a specific reset procedure or control replacement after FV sensor trip; consult the manual.
  • Replace FV sensor: If the sensor is faulty, replace it with a GE-approved flammable vapor sensor.
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Repair Difficulty

Hard 4/5

Required Part

Flammable Vapor Sensor
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