Display shows ER 30, refrigerator may not defrost properly or may show inconsistent temperatures.

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 defrost thermistor, Loose thermistor connection, Damaged sensor wiring, Control board sensor circuit fault

Safety: Unplug the refrigerator before accessing the evaporator area.

This code indicates the defrost sensor is reading incorrectly.

Locate defrost thermistor: It is usually clipped to the evaporator tubing.
Check attachment: Ensure the sensor is firmly clipped and making good thermal contact with the tubing.
Inspect connector: Reseat the thermistor connector and check for corrosion.
Replace thermistor: If ER 30 returns after a reset, replace the defrost thermistor.

Medium 3/5

Defrost Thermistor

Check Price on Amazon

We may earn a commission from links on this page.