Kenmore Gas water heater Error Codes: Full List & Meanings

Every Kenmore gas water heater error code in the Kenmore gas water heater error-code chart, as published by Sears PartsDirect, with its meaning. Codes vary by model, so confirm in your owner's manual. Support: Kenmore customer support (kenmore.com) or a Sears-authorized technician.

Smell gas? Leave the building now. Do not touch light switches, phones or appliances inside. Call your gas utility or 911 from outside. CO alarm sounding or headache, dizziness or nausea? Get everyone outside and call 911. Gas valves, burners, venting and wiring are for a licensed technician only. See our safety policy.

Codes by system

Sensors

Heating

All Kenmore gas water heater error codes

Codes marked "Reset only" or "Service" have no separate page because the manufacturer publishes no owner fix beyond a reset or a service call.

Code	Meaning	System	Owner action
LED Flashes once every 4 seconds	Water heater is at idle (no call for heat, no fault condition).	Heating	Service
LED alternates bright/dim	Water heater is heating (no fault condition).	Heating	Service
LED Flashes once every 3 seconds	Low flame signal.	Heating	Service
LED Flashes 2 times every 3 seconds	Air pressure switch closed.	Sensors	Reset only
LED Flashes 3 times every 3 seconds	Air pressure switch open. A long vent or blocked vent can prevent the pressure switch from closing when blower is running.	Sensors	Reset only
LED Flashes 4 times every 3 seconds	Exceeded temperature limit.	Heating	Service
LED Flashes 5 times every 3 seconds	Flame out.	Heating	Service
6-1	Ignition failure. The gas control failed to ignite the burner and has gone into locked-out state.	Heating	Service
6-2	Pressure switch/high limit opened. The gas control has sensed a repeated failure in the vent protection switches.	Sensors	Owner checks
6-3	Flame lost. The gas control sensed a repeated failure in the flame sensing circuitry during operation and has shut down the water heater.	Heating	Service
6-4	Flame out of sequence sensed. The gas control sensed a malfunction in the sequence of operation and has shut down the water heater.	Heating	Owner checks
7 LED Flashes every 3 seconds	Flammable vapor sensor (FVS). The gas control has sensed a problem with the flammable vapor sensor.	Sensors	Service
8-1	Flammable Vapor Sensor (FVS). The gas control has sensed a problem with the flammable vapor sensor.	Sensors	Service
8-2	Temperature sensor fault.	Heating	Owner checks
8-3	Gas control failure.	Heating	Owner checks
8-4	Gas control failure.	Heating	Owner checks
LED is constantly on	Gas control failure.	Heating	Reset only

Symptoms

Sources

Sears PartsDirect: Kenmore gas water heater error-code chart (third-party copy of manufacturer service data)

Last reviewed: October 20, 2026. ErrorCodePro is not affiliated with Kenmore.