Pilot light will not stay lit on Reliance atmospheric gas water heater

Safety first: Turn gas control knob to OFF and wait at least 5 minutes to clear any accumulated gas. Work in a well-ventilated area and avoid open flames.

Steps to check:

• 1. Observe pilot flame: Relight the pilot per Reliance instructions. The flame should be steady and engulf the upper 3/8–1/2 inch of the thermocouple tip. If the flame is weak or yellow, clean the pilot orifice.
• 2. Clean pilot assembly: Turn gas OFF. Remove the pilot tube from the burner assembly and gently clean the orifice with compressed air. Do not enlarge the orifice with tools.
• 3. Check thermocouple connection: Ensure the thermocouple nut is snug at the gas control valve (finger tight plus about 1/4 turn). Do not overtighten.
• 4. Replace thermocouple: If the pilot lights but goes out when you release the control knob, replace the thermocouple with a Reliance-compatible part. Route the new thermocouple away from burner flames except at the tip.
• 5. Check for drafts: Make sure there are no strong drafts or exhaust fans pulling air across the pilot area.

Warning: If the pilot will not light at all or you smell gas continuously, shut off gas and contact a professional.