Kenmore Hybrid gas water heater Error Codes: Full List & Meanings

Every Kenmore hybrid gas water heater error code in the Kenmore hybrid 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.

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Codes by system

Sensors

Power supply

Control / electronics

Heating

All Kenmore hybrid 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
E01	Invalid control board configuration. Also: E02	Control / electronics	Reset only
E03	Main valve relay failure. Also: E04, E05, E06	Control / electronics	Service
E07	Flame detected.	Heating	Service
E08	Energy Cut-Out (ECO) switch open. The control board detected the Energy Cut-Out (ECO) switch has opened and prevented power to the main valve. The ECO switch opens at 185 degrees Fahrenheit, plus or minus 14 degrees, and closes at temperature 149 degrees, plus or minus 14 degrees.	Sensors	Owner checks
E09	High-temperature switch open.	Heating	Service
E10	Voltage supply too high. The nominal voltage supply is 120 volts. The over-voltage limit is 132 volts.	Power supply	Owner checks
E11	Voltage supply too low. The nominal operating voltage is 120 volts.	Power supply	Service
E12	Abnormal blower current. Also: E13, E14	Control / electronics	Owner checks
E15	Abnormal blower speed. Also: E16, E17, E18, E19	Heating	Service
E20	Proportional valve. The proportional valve current is either too low or too high. Also: E21	Control / electronics	Service
E22	Open water outlet temperature sensor. The control board detected an open water outlet temperature sensor (thermistor) or thermistor wire circuit.	Heating	Service
E23	Shorted water outlet temperature sensor. The control board detected a shorted water outlet temperature sensor (thermistor) or thermistor wire circuit.	Heating	Service
E24	Inlet temperature sensor. The control board detected a shorted or open inlet temperature sensor (thermistor) or thermistor wire circuit. Also: E25	Water fill	Service
E26	Tank temperature sensor. The control board detected a shorted or open tank temperature sensor (thermistor) or thermistor wire circuit. Also: E27	Heating	Service
E28	Ignition failure. The control board failed to detect the flame during ignition. The control will retry a number of times to detect the flame.	Heating	Service
E30	Blower.	Motor / drive	Service
E33	Water flow valve. The water valve did not open when attempting to establish flow.	Control / electronics	Service
E34	Proportional gas valve. The proportional gas valve is not functioning properly.	Heating	Service
E35	Repeated flame loss.	Heating	Owner checks
E36	Calibration error.	Heating	Service
E37	No water flow. The heater could not start because the water flow was not established caused by an air bubble or a blockage in the water passage, a failed flow sensor or faulty circulation pump.	Heating	Owner checks
E99	Control board.	Control / electronics	Service

Symptoms

Sources

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

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