State  Water Heater  (Gas) Error Codes

These error code explanations can help you diagnose a problem with your State gas water heater.  For repair how-to help, visit the PartsDirect repair help section, which includes repair help for water heaters, major appliances, lawn and garden equipment, garage door openers, vacuum cleaners and more. You can also search for owner’s manuals and find water heater replacement parts.

Check out our water heater error code charts for information on a different brand of water heater.

Error Code Condition Check/Repair Shop Parts
LED not lit Control off or pilot light is out Follow the lighting instructions on the front of the water heater and attempt to relight the pilot light. Visibly verify the pilot is lit.
LED Continuously ON Pilot light was recently extinguished Turn the gas control valve/thermostat knob to OFF. Wait 10 minutes for the thermocouple to cool, then attempt to relight the pilot by following the lighting instructions on the water heater’s label. Until the thermocouple reaches its normal operating temperature, the status light will not blink, even if the pilot is lit. It may take as long as 90 seconds of continuous pilot operation before the thermocouple reaches normal operating temperature and the status light starts to blink.
1 Flash with a 3 second pause Normal Operation (bright to dim light) No corrective action or repair is necessary. Normal operation.
2 Flashes Thermocouple Check all wiring connections for loose or damaged wires. Correct if needed. Check the millivolt output on the thermocouple with a multi-meter. If output is less than 350 millivolts DC, replace the thermocouple/pilot assembly.
Thermocouple/pilot assembly
4 Flashes Temperature exceeded Turn gas control valve/thermostat knob to OFF. Turn the main gas supply OFF. Replace the gas control valve assembly.
Gas control valve assembly
5 Flashes Sensor failure Turn gas control valve/thermostat knob to OFF. Turn the main gas supply OFF. Replace the gas control valve assembly.
Gas control valve assembly
7 Flashes Gas/thermostat control failure Turn gas control valve/thermostat knob to OFF. Turn the main gas supply OFF. Replace the gas control valve assembly.
Gas control valve assembly
8 Flashes Power off failure If the pilot flame is visible when the control knob is set to the OFF position, replace the gas control valve assembly. If the pilot flame is not visible when the control knob is set to the OFF position, wait 10 minutes for the thermocouple to cool, and then relight the unit. If this condition returns, replace the gas control valve assembly.
Gas control valve assembly