State Temperature Sensor (Thermistor) Error in Gas Control

State electronic gas tank-type water heater LED flashes E2; water temperature may be erratic or unit shuts down.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed tank temperature sensor, Loose sensor connection to gas control, Internal gas control sensor fault

Safety: Turn gas control to OFF and allow water to cool before servicing.

Check wiring: On models with external tank sensors, inspect the sensor harness from the tank to the gas control. Reseat connectors.
Sensor test: Measure sensor resistance and compare to State specifications. Replace if out of range.
Gas control replacement: If the sensor is integral to the gas control and E2 persists, replace the gas control valve/thermostat assembly.

Hard 4/5

Tank Temperature Sensor

Check Price on Amazon

We may earn a commission from links on this page.