Kenmore  Water Heater  (Gas Model) Error Codes

These error code explanations can help you diagnose a problem with your Kenmore 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 Kenmore model or another brand of water heater.

Error Code Condition Check/Repair Shop Parts
LED Flashes Once every 4 seconds Water heater is at Idle (no call for heat, no fault condition) Normal Operation
LED Alternates bright/dim Water heater is heating (no fault condition) Normal Operation
LED Flashes Once every 3 seconds Low flame signal Shut off the power and allow time for the burner box to cool. Properly position the flame rod. Clean the flame rod of oxidation (rust or residue) with fine steel wool or replace the flame rod.
Flame rod
LED Flashes 2 times every 3 seconds Air pressure switch closed Check that blower operates and does not have any blockages in the venting. Turn off power to the water heater and check that all wiring is correct. Check for twisted, damaged or obstructed air pressure switch tubing. To check the switch, turn off the power to the water heater, disconnect the wires on the air pressure switch and check for electrical continuity. If the switch contacts show continuity, or a closed circuit, replace the air pressure switch. If the switch contacts show open and all wiring is correct, replace the gas control.
Air pressure switch, Gas control
LED Flashes 3 times every 3 seconds Air pressure switch open Make sure there are no blockages in the blower or venting system. Check for proper venting according to the installation instructions. A long vent or blocked vent can prevent the pressure switch from closing when blower is running. NOTE: The blower high limit switch is wired in series with the air pressure switch. Ensure blower high limit switch is not open. Check for electrical continuity across high limit switch and replace switch if contacts remain open.
Air pressure switch, High limit switch, Gas control
LED Flashes 4 times every 3 seconds Exceeded temperature limit Gas control failure, replace the gas control valve assembly.
Gas control
LED Flashes 5 times every 3 seconds Flame out Check that the gas supply to the water heater is on. Ensure the water heater is properly grounded and operating at 115-120 volts. Check the flame rod position and make sure it's not oxidized, broken or disconnected. Ensure the igniter and flame rod ceramic insulator is not cracked or broken. If all conditions are good and will not light, replace the control.
Gas control, Igniter, Flame rod
6-1 LED flashes 6 times and then 1 time every 3 seconds Ignition failure The gas control failed to ignite the burner and has gone into locked-out state. Make sure the gas supply is turned on. Make sure the water heater is properly grounded and is operating at 115-120 volts. Shut off the power and then check the igniter for broken or disconnected wires. Make sure the igniter and flame rod ceramic insulator is not cracked or broken. If all conditions are good and the water heater will not light, replace the control.
Gas control, Igniter, Flame rod
6-2 LED flashes six times and then twice every 3 seconds Pressure switch/ high limit opened The gas control has sensed a repeated failure in the vent protection switches. Check for any blockages in the blower or venting. Check the air pressure switch tubing for kinks or leaks. See corrective actions for the symptom of the LED flashing 2 and 3 times. If all conditions and blower are good and the heater will not run, replace the control.
Gas control
6-3 Led flashes six times and then three every 3 seconds Flame lost The gas control sensed a repeated failure in the flame sensing circuitry during operation and has shut down the water heater. Control failed to ignite the burner. Make sure gas supply is on. Check igniter for broken or disconnected wires. Make sure heater is properly grounded and operating at 115-120 volts. Make sure the igniter and flame rod or igniter and flame rod ceramic insulator is not cracked or broken. Replace as needed. If all conditions are good and the water heater will not light, replace the gas control.
Gas control
6-4 Led flashes six times and then four every 3 seconds Flame out of sequence sensed The gas control sensed a malfunction in the sequence of operation and has shut down the water heater. Shut off the power and check that the wiring is correct and the heater is properly grounded. Restore power and reset the control. To reset the control, slide the ON/OFF switch to the OFF position. Wait for 10 seconds and move the switch back to the ON position. If all conditions are good and the gas control will not reset, replace the control.
Gas control
7 Led flashes every 3 seconds Flammable Vapor Sensor (FVS) The gas control has sensed a problem with the flammable vapor sensor. Replace the vapor sensor. If replacing the vapor sensor does not correct the fault, replace the control.
Vapor sensor, Gas control
8-1 LED flashes eight times and then once every 3 seconds Flammable Vapor Sensor (FVS) The gas control has sensed a problem with the flammable vapor sensor. Replace the vapor sensor. If replacing the vapor sensor does not correct the fault, replace the control.
Vapor sensor, Gas control
8-2 LED flashes eight times and then twice every 3 seconds Temperature Sensor Fault Control has sensed an error in the temperature sensing circuit and has shut down the water heater. If resetting the control does not clear the fault code, replace it. To reset the control, slide the ON/OFF switch to the OFF position. Wait for 10 seconds and move the switch back to the ON position.
Gas control
8-3 LED flashes eight times and then 3 times every 3 seconds Gas control failure Control has sensed an error in the electronics of the valve and has shut down the water heater.. If resetting the control does not clear the fault code, replace it. To reset the control, slide the ON/OFF switch to the OFF position. Wait for 10 seconds and move the switch back to the ON position.
Gas control
8-4 LED flashes eight times and then 4 times every 3 seconds Gas control failure Control has sensed an error in the control circuits of the valve and has shut down the water heater. If resetting the control does not clear the fault code, replace it. To reset the control, slide the ON/OFF switch to the OFF position. Wait for 10 seconds and move the switch back to the ON position.
Gas control
LED is constantly ON Gas control failure Control has failed. If resetting the control does not clear the fault code, replace it. To reset the control, slide the ON/OFF switch to the OFF position. Wait for 10 seconds and move the switch back to the ON position.
Gas control