Rheem Pilot Ignition / Flame Holding Failure

Rheem gas water heater pilot will not light or will not stay lit

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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

Clogged pilot orifice, Weak thermocouple or thermopile, Insufficient combustion air, Faulty gas control valve

How to Fix / Troubleshooting

Safety first: Turn gas control to OFF and wait several minutes before attempting to relight. If you smell gas, ventilate and call your gas supplier.

  • Follow lighting instructions: Use the exact procedure on the Rheem label for lighting the pilot.
  • Clean pilot assembly: Turn gas OFF, remove the burner assembly, and clean the pilot orifice with compressed air. Do not enlarge the orifice.
  • Check thermocouple/thermopile: Ensure the pilot flame fully engulfs the sensor tip. If the pilot goes out when you release the knob, the thermocouple/thermopile may be weak and should be replaced.
  • Inspect air intake: Clean lint and dust from the combustion air openings at the base of the heater.
  • If problem persists: The gas control valve may be defective and should be replaced by a qualified technician.
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Repair Difficulty

Medium 3/5

Required Part

Pilot Assembly / Thermocouple
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