Where the money goes
Part $100–$350Labor $0–$800Typical labor time: 1–2 hrs
You might need this if…
DIY difficulty: professional-only•Gas valve relay errors
•Burners fail to ignite with good ignitor
The part
The gas valve controls fuel flow to the burners. Failures require licensed service due to combustion safety requirements.
Error codes that lead to this repair
E4Flame detected when the gas valve should be offEmergency5 FlashFlame detected when the gas valve should be offEmergency275Out-of-sequence flame lockoutEmergency14Flame detected when the gas valve should be offEmergency1 BlinkFlame detected when the gas valve should be offEmergency10 BlinksGas flow without a heat callEmergencyE4Flame detected when the gas valve should be offEmergency5 FlashFlame detected when the gas valve should be offEmergency14Flame detected when the gas valve should be offEmergency5 FlashFlame detected when the gas valve should be offEmergency8 FlashPermanent gas-heat lockoutEmergency5 FlashFlame detected when the gas valve should be offEmergency8 FlashPermanent gas-heat lockoutEmergency10 BlinksGas flow without a heat callEmergency1 BlinkFlame detected when the gas valve should be offEmergency10 BlinksGas flow without a heat callEmergencyE4Flame detected when the gas valve should be offEmergency5 FlashFlame detected when the gas valve should be offEmergency5 FlashFlame detected when the gas valve should be offEmergency8 FlashPermanent gas-heat lockoutEmergency5 FlashFlame detected when the gas valve should be offEmergency8 FlashPermanent gas-heat lockoutEmergency5 FlashFlame detected when the gas valve should be offEmergency8 FlashPermanent gas-heat lockoutEmergency5 BlinksFlame detected when the gas valve should be offEmergency5 BlinksFlame detected when the gas valve should be offEmergency
This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.